1184 lines
41 KiB
C
1184 lines
41 KiB
C
/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/io.h>
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#include <linux/clk-provider.h>
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#include <linux/clkdev.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/clk/tegra.h>
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#include <linux/delay.h>
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#include <dt-bindings/clock/tegra20-car.h>
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#include "clk.h"
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#include "clk-id.h"
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#define MISC_CLK_ENB 0x48
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#define OSC_CTRL 0x50
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#define OSC_CTRL_OSC_FREQ_MASK (3<<30)
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#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
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#define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30)
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#define OSC_CTRL_OSC_FREQ_12MHZ (2<<30)
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#define OSC_CTRL_OSC_FREQ_26MHZ (3<<30)
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#define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK)
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#define OSC_CTRL_PLL_REF_DIV_MASK (3<<28)
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#define OSC_CTRL_PLL_REF_DIV_1 (0<<28)
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#define OSC_CTRL_PLL_REF_DIV_2 (1<<28)
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#define OSC_CTRL_PLL_REF_DIV_4 (2<<28)
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#define OSC_FREQ_DET 0x58
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#define OSC_FREQ_DET_TRIG (1<<31)
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#define OSC_FREQ_DET_STATUS 0x5c
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#define OSC_FREQ_DET_BUSY (1<<31)
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#define OSC_FREQ_DET_CNT_MASK 0xFFFF
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#define TEGRA20_CLK_PERIPH_BANKS 3
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#define PLLS_BASE 0xf0
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#define PLLS_MISC 0xf4
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#define PLLC_BASE 0x80
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#define PLLC_MISC 0x8c
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#define PLLM_BASE 0x90
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#define PLLM_MISC 0x9c
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#define PLLP_BASE 0xa0
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#define PLLP_MISC 0xac
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#define PLLA_BASE 0xb0
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#define PLLA_MISC 0xbc
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#define PLLU_BASE 0xc0
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#define PLLU_MISC 0xcc
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#define PLLD_BASE 0xd0
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#define PLLD_MISC 0xdc
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#define PLLX_BASE 0xe0
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#define PLLX_MISC 0xe4
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#define PLLE_BASE 0xe8
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#define PLLE_MISC 0xec
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#define PLL_BASE_LOCK BIT(27)
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#define PLLE_MISC_LOCK BIT(11)
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#define PLL_MISC_LOCK_ENABLE 18
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#define PLLDU_MISC_LOCK_ENABLE 22
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#define PLLE_MISC_LOCK_ENABLE 9
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#define PLLC_OUT 0x84
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#define PLLM_OUT 0x94
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#define PLLP_OUTA 0xa4
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#define PLLP_OUTB 0xa8
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#define PLLA_OUT 0xb4
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#define CCLK_BURST_POLICY 0x20
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#define SUPER_CCLK_DIVIDER 0x24
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#define SCLK_BURST_POLICY 0x28
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#define SUPER_SCLK_DIVIDER 0x2c
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#define CLK_SYSTEM_RATE 0x30
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#define CCLK_BURST_POLICY_SHIFT 28
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#define CCLK_RUN_POLICY_SHIFT 4
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#define CCLK_IDLE_POLICY_SHIFT 0
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#define CCLK_IDLE_POLICY 1
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#define CCLK_RUN_POLICY 2
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#define CCLK_BURST_POLICY_PLLX 8
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#define CLK_SOURCE_I2S1 0x100
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#define CLK_SOURCE_I2S2 0x104
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#define CLK_SOURCE_PWM 0x110
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#define CLK_SOURCE_SPI 0x114
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#define CLK_SOURCE_XIO 0x120
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#define CLK_SOURCE_TWC 0x12c
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#define CLK_SOURCE_IDE 0x144
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#define CLK_SOURCE_HDMI 0x18c
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#define CLK_SOURCE_DISP1 0x138
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#define CLK_SOURCE_DISP2 0x13c
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#define CLK_SOURCE_CSITE 0x1d4
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#define CLK_SOURCE_I2C1 0x124
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#define CLK_SOURCE_I2C2 0x198
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#define CLK_SOURCE_I2C3 0x1b8
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#define CLK_SOURCE_DVC 0x128
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#define CLK_SOURCE_UARTA 0x178
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#define CLK_SOURCE_UARTB 0x17c
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#define CLK_SOURCE_UARTC 0x1a0
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#define CLK_SOURCE_UARTD 0x1c0
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#define CLK_SOURCE_UARTE 0x1c4
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#define CLK_SOURCE_EMC 0x19c
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#define AUDIO_SYNC_CLK 0x38
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/* Tegra CPU clock and reset control regs */
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#define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c
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#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340
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#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344
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#define CPU_CLOCK(cpu) (0x1 << (8 + cpu))
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#define CPU_RESET(cpu) (0x1111ul << (cpu))
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#ifdef CONFIG_PM_SLEEP
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static struct cpu_clk_suspend_context {
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u32 pllx_misc;
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u32 pllx_base;
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u32 cpu_burst;
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u32 clk_csite_src;
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u32 cclk_divider;
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} tegra20_cpu_clk_sctx;
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#endif
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static void __iomem *clk_base;
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static void __iomem *pmc_base;
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static DEFINE_SPINLOCK(emc_lock);
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#define TEGRA_INIT_DATA_MUX(_name, _parents, _offset, \
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_clk_num, _gate_flags, _clk_id) \
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TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
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30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \
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_clk_num, \
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_gate_flags, _clk_id)
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#define TEGRA_INIT_DATA_DIV16(_name, _parents, _offset, \
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_clk_num, _gate_flags, _clk_id) \
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TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
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30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, \
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_clk_num, _gate_flags, \
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_clk_id)
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#define TEGRA_INIT_DATA_NODIV(_name, _parents, _offset, \
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_mux_shift, _mux_width, _clk_num, \
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_gate_flags, _clk_id) \
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TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
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_mux_shift, _mux_width, 0, 0, 0, 0, 0, \
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_clk_num, _gate_flags, \
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_clk_id)
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static struct clk **clks;
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static struct tegra_clk_pll_freq_table pll_c_freq_table[] = {
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{ 12000000, 600000000, 600, 12, 1, 8 },
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{ 13000000, 600000000, 600, 13, 1, 8 },
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{ 19200000, 600000000, 500, 16, 1, 6 },
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{ 26000000, 600000000, 600, 26, 1, 8 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_m_freq_table[] = {
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{ 12000000, 666000000, 666, 12, 1, 8 },
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{ 13000000, 666000000, 666, 13, 1, 8 },
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{ 19200000, 666000000, 555, 16, 1, 8 },
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{ 26000000, 666000000, 666, 26, 1, 8 },
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{ 12000000, 600000000, 600, 12, 1, 8 },
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{ 13000000, 600000000, 600, 13, 1, 8 },
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{ 19200000, 600000000, 375, 12, 1, 6 },
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{ 26000000, 600000000, 600, 26, 1, 8 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
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{ 12000000, 216000000, 432, 12, 2, 8 },
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{ 13000000, 216000000, 432, 13, 2, 8 },
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{ 19200000, 216000000, 90, 4, 2, 1 },
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{ 26000000, 216000000, 432, 26, 2, 8 },
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{ 12000000, 432000000, 432, 12, 1, 8 },
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{ 13000000, 432000000, 432, 13, 1, 8 },
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{ 19200000, 432000000, 90, 4, 1, 1 },
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{ 26000000, 432000000, 432, 26, 1, 8 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_a_freq_table[] = {
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{ 28800000, 56448000, 49, 25, 1, 1 },
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{ 28800000, 73728000, 64, 25, 1, 1 },
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{ 28800000, 24000000, 5, 6, 1, 1 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
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{ 12000000, 216000000, 216, 12, 1, 4 },
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{ 13000000, 216000000, 216, 13, 1, 4 },
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{ 19200000, 216000000, 135, 12, 1, 3 },
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{ 26000000, 216000000, 216, 26, 1, 4 },
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{ 12000000, 594000000, 594, 12, 1, 8 },
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{ 13000000, 594000000, 594, 13, 1, 8 },
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{ 19200000, 594000000, 495, 16, 1, 8 },
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{ 26000000, 594000000, 594, 26, 1, 8 },
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{ 12000000, 1000000000, 1000, 12, 1, 12 },
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{ 13000000, 1000000000, 1000, 13, 1, 12 },
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{ 19200000, 1000000000, 625, 12, 1, 8 },
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{ 26000000, 1000000000, 1000, 26, 1, 12 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_u_freq_table[] = {
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{ 12000000, 480000000, 960, 12, 1, 0 },
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{ 13000000, 480000000, 960, 13, 1, 0 },
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{ 19200000, 480000000, 200, 4, 1, 0 },
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{ 26000000, 480000000, 960, 26, 1, 0 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static struct tegra_clk_pll_freq_table pll_x_freq_table[] = {
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/* 1 GHz */
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{ 12000000, 1000000000, 1000, 12, 1, 12 },
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{ 13000000, 1000000000, 1000, 13, 1, 12 },
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{ 19200000, 1000000000, 625, 12, 1, 8 },
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{ 26000000, 1000000000, 1000, 26, 1, 12 },
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/* 912 MHz */
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{ 12000000, 912000000, 912, 12, 1, 12 },
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{ 13000000, 912000000, 912, 13, 1, 12 },
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{ 19200000, 912000000, 760, 16, 1, 8 },
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{ 26000000, 912000000, 912, 26, 1, 12 },
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/* 816 MHz */
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{ 12000000, 816000000, 816, 12, 1, 12 },
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{ 13000000, 816000000, 816, 13, 1, 12 },
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{ 19200000, 816000000, 680, 16, 1, 8 },
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{ 26000000, 816000000, 816, 26, 1, 12 },
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/* 760 MHz */
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{ 12000000, 760000000, 760, 12, 1, 12 },
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{ 13000000, 760000000, 760, 13, 1, 12 },
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{ 19200000, 760000000, 950, 24, 1, 8 },
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{ 26000000, 760000000, 760, 26, 1, 12 },
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/* 750 MHz */
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{ 12000000, 750000000, 750, 12, 1, 12 },
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{ 13000000, 750000000, 750, 13, 1, 12 },
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{ 19200000, 750000000, 625, 16, 1, 8 },
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{ 26000000, 750000000, 750, 26, 1, 12 },
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/* 608 MHz */
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{ 12000000, 608000000, 608, 12, 1, 12 },
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{ 13000000, 608000000, 608, 13, 1, 12 },
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{ 19200000, 608000000, 380, 12, 1, 8 },
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{ 26000000, 608000000, 608, 26, 1, 12 },
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/* 456 MHz */
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{ 12000000, 456000000, 456, 12, 1, 12 },
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{ 13000000, 456000000, 456, 13, 1, 12 },
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{ 19200000, 456000000, 380, 16, 1, 8 },
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{ 26000000, 456000000, 456, 26, 1, 12 },
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/* 312 MHz */
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{ 12000000, 312000000, 312, 12, 1, 12 },
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{ 13000000, 312000000, 312, 13, 1, 12 },
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{ 19200000, 312000000, 260, 16, 1, 8 },
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{ 26000000, 312000000, 312, 26, 1, 12 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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static const struct pdiv_map plle_p[] = {
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{ .pdiv = 1, .hw_val = 1 },
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{ .pdiv = 0, .hw_val = 0 },
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};
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static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
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{ 12000000, 100000000, 200, 24, 1, 0 },
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{ 0, 0, 0, 0, 0, 0 },
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};
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/* PLL parameters */
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static struct tegra_clk_pll_params pll_c_params = {
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.input_min = 2000000,
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.input_max = 31000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 20000000,
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.vco_max = 1400000000,
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.base_reg = PLLC_BASE,
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.misc_reg = PLLC_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
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.lock_delay = 300,
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.freq_table = pll_c_freq_table,
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.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static struct tegra_clk_pll_params pll_m_params = {
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.input_min = 2000000,
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.input_max = 31000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 20000000,
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.vco_max = 1200000000,
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.base_reg = PLLM_BASE,
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.misc_reg = PLLM_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
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.lock_delay = 300,
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.freq_table = pll_m_freq_table,
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.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static struct tegra_clk_pll_params pll_p_params = {
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.input_min = 2000000,
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.input_max = 31000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 20000000,
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.vco_max = 1400000000,
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.base_reg = PLLP_BASE,
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.misc_reg = PLLP_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
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.lock_delay = 300,
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.freq_table = pll_p_freq_table,
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.flags = TEGRA_PLL_FIXED | TEGRA_PLL_HAS_CPCON |
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TEGRA_PLL_HAS_LOCK_ENABLE,
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.fixed_rate = 216000000,
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};
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static struct tegra_clk_pll_params pll_a_params = {
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.input_min = 2000000,
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.input_max = 31000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 20000000,
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.vco_max = 1400000000,
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.base_reg = PLLA_BASE,
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.misc_reg = PLLA_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
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.lock_delay = 300,
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.freq_table = pll_a_freq_table,
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.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static struct tegra_clk_pll_params pll_d_params = {
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.input_min = 2000000,
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.input_max = 40000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 40000000,
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.vco_max = 1000000000,
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.base_reg = PLLD_BASE,
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.misc_reg = PLLD_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
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.lock_delay = 1000,
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.freq_table = pll_d_freq_table,
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.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static const struct pdiv_map pllu_p[] = {
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{ .pdiv = 1, .hw_val = 1 },
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{ .pdiv = 2, .hw_val = 0 },
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{ .pdiv = 0, .hw_val = 0 },
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};
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static struct tegra_clk_pll_params pll_u_params = {
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.input_min = 2000000,
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.input_max = 40000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 48000000,
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.vco_max = 960000000,
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.base_reg = PLLU_BASE,
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.misc_reg = PLLU_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
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.lock_delay = 1000,
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.pdiv_tohw = pllu_p,
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.freq_table = pll_u_freq_table,
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.flags = TEGRA_PLLU | TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static struct tegra_clk_pll_params pll_x_params = {
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.input_min = 2000000,
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.input_max = 31000000,
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.cf_min = 1000000,
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.cf_max = 6000000,
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.vco_min = 20000000,
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.vco_max = 1200000000,
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.base_reg = PLLX_BASE,
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.misc_reg = PLLX_MISC,
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.lock_mask = PLL_BASE_LOCK,
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.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
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.lock_delay = 300,
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.freq_table = pll_x_freq_table,
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.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE,
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};
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static struct tegra_clk_pll_params pll_e_params = {
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.input_min = 12000000,
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.input_max = 12000000,
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.cf_min = 0,
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.cf_max = 0,
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.vco_min = 0,
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.vco_max = 0,
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.base_reg = PLLE_BASE,
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.misc_reg = PLLE_MISC,
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.lock_mask = PLLE_MISC_LOCK,
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.lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE,
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.lock_delay = 0,
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.pdiv_tohw = plle_p,
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.freq_table = pll_e_freq_table,
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.flags = TEGRA_PLL_FIXED | TEGRA_PLL_LOCK_MISC |
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TEGRA_PLL_HAS_LOCK_ENABLE,
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.fixed_rate = 100000000,
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};
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static struct tegra_devclk devclks[] __initdata = {
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{ .con_id = "pll_c", .dt_id = TEGRA20_CLK_PLL_C },
|
|
{ .con_id = "pll_c_out1", .dt_id = TEGRA20_CLK_PLL_C_OUT1 },
|
|
{ .con_id = "pll_p", .dt_id = TEGRA20_CLK_PLL_P },
|
|
{ .con_id = "pll_p_out1", .dt_id = TEGRA20_CLK_PLL_P_OUT1 },
|
|
{ .con_id = "pll_p_out2", .dt_id = TEGRA20_CLK_PLL_P_OUT2 },
|
|
{ .con_id = "pll_p_out3", .dt_id = TEGRA20_CLK_PLL_P_OUT3 },
|
|
{ .con_id = "pll_p_out4", .dt_id = TEGRA20_CLK_PLL_P_OUT4 },
|
|
{ .con_id = "pll_m", .dt_id = TEGRA20_CLK_PLL_M },
|
|
{ .con_id = "pll_m_out1", .dt_id = TEGRA20_CLK_PLL_M_OUT1 },
|
|
{ .con_id = "pll_x", .dt_id = TEGRA20_CLK_PLL_X },
|
|
{ .con_id = "pll_u", .dt_id = TEGRA20_CLK_PLL_U },
|
|
{ .con_id = "pll_d", .dt_id = TEGRA20_CLK_PLL_D },
|
|
{ .con_id = "pll_d_out0", .dt_id = TEGRA20_CLK_PLL_D_OUT0 },
|
|
{ .con_id = "pll_a", .dt_id = TEGRA20_CLK_PLL_A },
|
|
{ .con_id = "pll_a_out0", .dt_id = TEGRA20_CLK_PLL_A_OUT0 },
|
|
{ .con_id = "pll_e", .dt_id = TEGRA20_CLK_PLL_E },
|
|
{ .con_id = "cclk", .dt_id = TEGRA20_CLK_CCLK },
|
|
{ .con_id = "sclk", .dt_id = TEGRA20_CLK_SCLK },
|
|
{ .con_id = "hclk", .dt_id = TEGRA20_CLK_HCLK },
|
|
{ .con_id = "pclk", .dt_id = TEGRA20_CLK_PCLK },
|
|
{ .con_id = "fuse", .dt_id = TEGRA20_CLK_FUSE },
|
|
{ .con_id = "twd", .dt_id = TEGRA20_CLK_TWD },
|
|
{ .con_id = "audio", .dt_id = TEGRA20_CLK_AUDIO },
|
|
{ .con_id = "audio_2x", .dt_id = TEGRA20_CLK_AUDIO_2X },
|
|
{ .dev_id = "tegra20-ac97", .dt_id = TEGRA20_CLK_AC97 },
|
|
{ .dev_id = "tegra-apbdma", .dt_id = TEGRA20_CLK_APBDMA },
|
|
{ .dev_id = "rtc-tegra", .dt_id = TEGRA20_CLK_RTC },
|
|
{ .dev_id = "timer", .dt_id = TEGRA20_CLK_TIMER },
|
|
{ .dev_id = "tegra-kbc", .dt_id = TEGRA20_CLK_KBC },
|
|
{ .con_id = "csus", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSUS },
|
|
{ .con_id = "vcp", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_VCP },
|
|
{ .con_id = "bsea", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_BSEA },
|
|
{ .con_id = "bsev", .dev_id = "tegra-aes", .dt_id = TEGRA20_CLK_BSEV },
|
|
{ .con_id = "emc", .dt_id = TEGRA20_CLK_EMC },
|
|
{ .dev_id = "fsl-tegra-udc", .dt_id = TEGRA20_CLK_USBD },
|
|
{ .dev_id = "tegra-ehci.1", .dt_id = TEGRA20_CLK_USB2 },
|
|
{ .dev_id = "tegra-ehci.2", .dt_id = TEGRA20_CLK_USB3 },
|
|
{ .dev_id = "dsi", .dt_id = TEGRA20_CLK_DSI },
|
|
{ .con_id = "csi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSI },
|
|
{ .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP },
|
|
{ .con_id = "pex", .dt_id = TEGRA20_CLK_PEX },
|
|
{ .con_id = "afi", .dt_id = TEGRA20_CLK_AFI },
|
|
{ .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 },
|
|
{ .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 },
|
|
{ .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K },
|
|
{ .con_id = "blink", .dt_id = TEGRA20_CLK_BLINK },
|
|
{ .con_id = "clk_m", .dt_id = TEGRA20_CLK_CLK_M },
|
|
{ .con_id = "pll_ref", .dt_id = TEGRA20_CLK_PLL_REF },
|
|
{ .dev_id = "tegra20-i2s.0", .dt_id = TEGRA20_CLK_I2S1 },
|
|
{ .dev_id = "tegra20-i2s.1", .dt_id = TEGRA20_CLK_I2S2 },
|
|
{ .con_id = "spdif_out", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_OUT },
|
|
{ .con_id = "spdif_in", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_IN },
|
|
{ .dev_id = "spi_tegra.0", .dt_id = TEGRA20_CLK_SBC1 },
|
|
{ .dev_id = "spi_tegra.1", .dt_id = TEGRA20_CLK_SBC2 },
|
|
{ .dev_id = "spi_tegra.2", .dt_id = TEGRA20_CLK_SBC3 },
|
|
{ .dev_id = "spi_tegra.3", .dt_id = TEGRA20_CLK_SBC4 },
|
|
{ .dev_id = "spi", .dt_id = TEGRA20_CLK_SPI },
|
|
{ .dev_id = "xio", .dt_id = TEGRA20_CLK_XIO },
|
|
{ .dev_id = "twc", .dt_id = TEGRA20_CLK_TWC },
|
|
{ .dev_id = "ide", .dt_id = TEGRA20_CLK_IDE },
|
|
{ .dev_id = "tegra_nand", .dt_id = TEGRA20_CLK_NDFLASH },
|
|
{ .dev_id = "vfir", .dt_id = TEGRA20_CLK_VFIR },
|
|
{ .dev_id = "csite", .dt_id = TEGRA20_CLK_CSITE },
|
|
{ .dev_id = "la", .dt_id = TEGRA20_CLK_LA },
|
|
{ .dev_id = "tegra_w1", .dt_id = TEGRA20_CLK_OWR },
|
|
{ .dev_id = "mipi", .dt_id = TEGRA20_CLK_MIPI },
|
|
{ .dev_id = "vde", .dt_id = TEGRA20_CLK_VDE },
|
|
{ .con_id = "vi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI },
|
|
{ .dev_id = "epp", .dt_id = TEGRA20_CLK_EPP },
|
|
{ .dev_id = "mpe", .dt_id = TEGRA20_CLK_MPE },
|
|
{ .dev_id = "host1x", .dt_id = TEGRA20_CLK_HOST1X },
|
|
{ .dev_id = "3d", .dt_id = TEGRA20_CLK_GR3D },
|
|
{ .dev_id = "2d", .dt_id = TEGRA20_CLK_GR2D },
|
|
{ .dev_id = "tegra-nor", .dt_id = TEGRA20_CLK_NOR },
|
|
{ .dev_id = "sdhci-tegra.0", .dt_id = TEGRA20_CLK_SDMMC1 },
|
|
{ .dev_id = "sdhci-tegra.1", .dt_id = TEGRA20_CLK_SDMMC2 },
|
|
{ .dev_id = "sdhci-tegra.2", .dt_id = TEGRA20_CLK_SDMMC3 },
|
|
{ .dev_id = "sdhci-tegra.3", .dt_id = TEGRA20_CLK_SDMMC4 },
|
|
{ .dev_id = "cve", .dt_id = TEGRA20_CLK_CVE },
|
|
{ .dev_id = "tvo", .dt_id = TEGRA20_CLK_TVO },
|
|
{ .dev_id = "tvdac", .dt_id = TEGRA20_CLK_TVDAC },
|
|
{ .con_id = "vi_sensor", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI_SENSOR },
|
|
{ .dev_id = "hdmi", .dt_id = TEGRA20_CLK_HDMI },
|
|
{ .con_id = "div-clk", .dev_id = "tegra-i2c.0", .dt_id = TEGRA20_CLK_I2C1 },
|
|
{ .con_id = "div-clk", .dev_id = "tegra-i2c.1", .dt_id = TEGRA20_CLK_I2C2 },
|
|
{ .con_id = "div-clk", .dev_id = "tegra-i2c.2", .dt_id = TEGRA20_CLK_I2C3 },
|
|
{ .con_id = "div-clk", .dev_id = "tegra-i2c.3", .dt_id = TEGRA20_CLK_DVC },
|
|
{ .dev_id = "tegra-pwm", .dt_id = TEGRA20_CLK_PWM },
|
|
{ .dev_id = "tegra_uart.0", .dt_id = TEGRA20_CLK_UARTA },
|
|
{ .dev_id = "tegra_uart.1", .dt_id = TEGRA20_CLK_UARTB },
|
|
{ .dev_id = "tegra_uart.2", .dt_id = TEGRA20_CLK_UARTC },
|
|
{ .dev_id = "tegra_uart.3", .dt_id = TEGRA20_CLK_UARTD },
|
|
{ .dev_id = "tegra_uart.4", .dt_id = TEGRA20_CLK_UARTE },
|
|
{ .dev_id = "tegradc.0", .dt_id = TEGRA20_CLK_DISP1 },
|
|
{ .dev_id = "tegradc.1", .dt_id = TEGRA20_CLK_DISP2 },
|
|
};
|
|
|
|
static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = {
|
|
[tegra_clk_ahbdma] = { .dt_id = TEGRA20_CLK_AHBDMA, .present = true },
|
|
[tegra_clk_apbdma] = { .dt_id = TEGRA20_CLK_APBDMA, .present = true },
|
|
[tegra_clk_spdif_out] = { .dt_id = TEGRA20_CLK_SPDIF_OUT, .present = true },
|
|
[tegra_clk_spdif_in] = { .dt_id = TEGRA20_CLK_SPDIF_IN, .present = true },
|
|
[tegra_clk_sdmmc1] = { .dt_id = TEGRA20_CLK_SDMMC1, .present = true },
|
|
[tegra_clk_sdmmc2] = { .dt_id = TEGRA20_CLK_SDMMC2, .present = true },
|
|
[tegra_clk_sdmmc3] = { .dt_id = TEGRA20_CLK_SDMMC3, .present = true },
|
|
[tegra_clk_sdmmc4] = { .dt_id = TEGRA20_CLK_SDMMC4, .present = true },
|
|
[tegra_clk_la] = { .dt_id = TEGRA20_CLK_LA, .present = true },
|
|
[tegra_clk_csite] = { .dt_id = TEGRA20_CLK_CSITE, .present = true },
|
|
[tegra_clk_vfir] = { .dt_id = TEGRA20_CLK_VFIR, .present = true },
|
|
[tegra_clk_mipi] = { .dt_id = TEGRA20_CLK_MIPI, .present = true },
|
|
[tegra_clk_nor] = { .dt_id = TEGRA20_CLK_NOR, .present = true },
|
|
[tegra_clk_rtc] = { .dt_id = TEGRA20_CLK_RTC, .present = true },
|
|
[tegra_clk_timer] = { .dt_id = TEGRA20_CLK_TIMER, .present = true },
|
|
[tegra_clk_kbc] = { .dt_id = TEGRA20_CLK_KBC, .present = true },
|
|
[tegra_clk_csus] = { .dt_id = TEGRA20_CLK_CSUS, .present = true },
|
|
[tegra_clk_vcp] = { .dt_id = TEGRA20_CLK_VCP, .present = true },
|
|
[tegra_clk_bsea] = { .dt_id = TEGRA20_CLK_BSEA, .present = true },
|
|
[tegra_clk_bsev] = { .dt_id = TEGRA20_CLK_BSEV, .present = true },
|
|
[tegra_clk_usbd] = { .dt_id = TEGRA20_CLK_USBD, .present = true },
|
|
[tegra_clk_usb2] = { .dt_id = TEGRA20_CLK_USB2, .present = true },
|
|
[tegra_clk_usb3] = { .dt_id = TEGRA20_CLK_USB3, .present = true },
|
|
[tegra_clk_csi] = { .dt_id = TEGRA20_CLK_CSI, .present = true },
|
|
[tegra_clk_isp] = { .dt_id = TEGRA20_CLK_ISP, .present = true },
|
|
[tegra_clk_clk_32k] = { .dt_id = TEGRA20_CLK_CLK_32K, .present = true },
|
|
[tegra_clk_blink] = { .dt_id = TEGRA20_CLK_BLINK, .present = true },
|
|
[tegra_clk_hclk] = { .dt_id = TEGRA20_CLK_HCLK, .present = true },
|
|
[tegra_clk_pclk] = { .dt_id = TEGRA20_CLK_PCLK, .present = true },
|
|
[tegra_clk_pll_p_out1] = { .dt_id = TEGRA20_CLK_PLL_P_OUT1, .present = true },
|
|
[tegra_clk_pll_p_out2] = { .dt_id = TEGRA20_CLK_PLL_P_OUT2, .present = true },
|
|
[tegra_clk_pll_p_out3] = { .dt_id = TEGRA20_CLK_PLL_P_OUT3, .present = true },
|
|
[tegra_clk_pll_p_out4] = { .dt_id = TEGRA20_CLK_PLL_P_OUT4, .present = true },
|
|
[tegra_clk_pll_p] = { .dt_id = TEGRA20_CLK_PLL_P, .present = true },
|
|
[tegra_clk_owr] = { .dt_id = TEGRA20_CLK_OWR, .present = true },
|
|
[tegra_clk_sbc1] = { .dt_id = TEGRA20_CLK_SBC1, .present = true },
|
|
[tegra_clk_sbc2] = { .dt_id = TEGRA20_CLK_SBC2, .present = true },
|
|
[tegra_clk_sbc3] = { .dt_id = TEGRA20_CLK_SBC3, .present = true },
|
|
[tegra_clk_sbc4] = { .dt_id = TEGRA20_CLK_SBC4, .present = true },
|
|
[tegra_clk_vde] = { .dt_id = TEGRA20_CLK_VDE, .present = true },
|
|
[tegra_clk_vi] = { .dt_id = TEGRA20_CLK_VI, .present = true },
|
|
[tegra_clk_epp] = { .dt_id = TEGRA20_CLK_EPP, .present = true },
|
|
[tegra_clk_mpe] = { .dt_id = TEGRA20_CLK_MPE, .present = true },
|
|
[tegra_clk_host1x] = { .dt_id = TEGRA20_CLK_HOST1X, .present = true },
|
|
[tegra_clk_gr2d] = { .dt_id = TEGRA20_CLK_GR2D, .present = true },
|
|
[tegra_clk_gr3d] = { .dt_id = TEGRA20_CLK_GR3D, .present = true },
|
|
[tegra_clk_ndflash] = { .dt_id = TEGRA20_CLK_NDFLASH, .present = true },
|
|
[tegra_clk_cve] = { .dt_id = TEGRA20_CLK_CVE, .present = true },
|
|
[tegra_clk_tvo] = { .dt_id = TEGRA20_CLK_TVO, .present = true },
|
|
[tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true },
|
|
[tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true },
|
|
[tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true },
|
|
[tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true },
|
|
[tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true },
|
|
};
|
|
|
|
static unsigned long tegra20_clk_measure_input_freq(void)
|
|
{
|
|
u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL);
|
|
u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK;
|
|
u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK;
|
|
unsigned long input_freq;
|
|
|
|
switch (auto_clk_control) {
|
|
case OSC_CTRL_OSC_FREQ_12MHZ:
|
|
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
|
|
input_freq = 12000000;
|
|
break;
|
|
case OSC_CTRL_OSC_FREQ_13MHZ:
|
|
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
|
|
input_freq = 13000000;
|
|
break;
|
|
case OSC_CTRL_OSC_FREQ_19_2MHZ:
|
|
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
|
|
input_freq = 19200000;
|
|
break;
|
|
case OSC_CTRL_OSC_FREQ_26MHZ:
|
|
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
|
|
input_freq = 26000000;
|
|
break;
|
|
default:
|
|
pr_err("Unexpected clock autodetect value %d",
|
|
auto_clk_control);
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
return input_freq;
|
|
}
|
|
|
|
static unsigned int tegra20_get_pll_ref_div(void)
|
|
{
|
|
u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) &
|
|
OSC_CTRL_PLL_REF_DIV_MASK;
|
|
|
|
switch (pll_ref_div) {
|
|
case OSC_CTRL_PLL_REF_DIV_1:
|
|
return 1;
|
|
case OSC_CTRL_PLL_REF_DIV_2:
|
|
return 2;
|
|
case OSC_CTRL_PLL_REF_DIV_4:
|
|
return 4;
|
|
default:
|
|
pr_err("Invalid pll ref divider %d\n", pll_ref_div);
|
|
BUG();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void tegra20_pll_init(void)
|
|
{
|
|
struct clk *clk;
|
|
|
|
/* PLLC */
|
|
clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0,
|
|
&pll_c_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_C] = clk;
|
|
|
|
/* PLLC_OUT1 */
|
|
clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c",
|
|
clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
|
|
8, 8, 1, NULL);
|
|
clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div",
|
|
clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT,
|
|
0, NULL);
|
|
clks[TEGRA20_CLK_PLL_C_OUT1] = clk;
|
|
|
|
/* PLLM */
|
|
clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL,
|
|
CLK_SET_RATE_GATE, &pll_m_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_M] = clk;
|
|
|
|
/* PLLM_OUT1 */
|
|
clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m",
|
|
clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
|
|
8, 8, 1, NULL);
|
|
clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div",
|
|
clk_base + PLLM_OUT, 1, 0,
|
|
CLK_SET_RATE_PARENT, 0, NULL);
|
|
clks[TEGRA20_CLK_PLL_M_OUT1] = clk;
|
|
|
|
/* PLLX */
|
|
clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0,
|
|
&pll_x_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_X] = clk;
|
|
|
|
/* PLLU */
|
|
clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0,
|
|
&pll_u_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_U] = clk;
|
|
|
|
/* PLLD */
|
|
clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0,
|
|
&pll_d_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_D] = clk;
|
|
|
|
/* PLLD_OUT0 */
|
|
clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clks[TEGRA20_CLK_PLL_D_OUT0] = clk;
|
|
|
|
/* PLLA */
|
|
clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0,
|
|
&pll_a_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_A] = clk;
|
|
|
|
/* PLLA_OUT0 */
|
|
clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a",
|
|
clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
|
|
8, 8, 1, NULL);
|
|
clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div",
|
|
clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED |
|
|
CLK_SET_RATE_PARENT, 0, NULL);
|
|
clks[TEGRA20_CLK_PLL_A_OUT0] = clk;
|
|
|
|
/* PLLE */
|
|
clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base,
|
|
0, &pll_e_params, NULL);
|
|
clks[TEGRA20_CLK_PLL_E] = clk;
|
|
}
|
|
|
|
static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
|
|
"pll_p", "pll_p_out4",
|
|
"pll_p_out3", "clk_d", "pll_x" };
|
|
static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
|
|
"pll_p_out3", "pll_p_out2", "clk_d",
|
|
"clk_32k", "pll_m_out1" };
|
|
|
|
static void tegra20_super_clk_init(void)
|
|
{
|
|
struct clk *clk;
|
|
|
|
/* CCLK */
|
|
clk = tegra_clk_register_super_mux("cclk", cclk_parents,
|
|
ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT,
|
|
clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
|
|
clks[TEGRA20_CLK_CCLK] = clk;
|
|
|
|
/* SCLK */
|
|
clk = tegra_clk_register_super_mux("sclk", sclk_parents,
|
|
ARRAY_SIZE(sclk_parents),
|
|
CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
|
|
clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
|
|
clks[TEGRA20_CLK_SCLK] = clk;
|
|
|
|
/* twd */
|
|
clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4);
|
|
clks[TEGRA20_CLK_TWD] = clk;
|
|
}
|
|
|
|
static const char *audio_parents[] = { "spdif_in", "i2s1", "i2s2", "unused",
|
|
"pll_a_out0", "unused", "unused",
|
|
"unused" };
|
|
|
|
static void __init tegra20_audio_clk_init(void)
|
|
{
|
|
struct clk *clk;
|
|
|
|
/* audio */
|
|
clk = clk_register_mux(NULL, "audio_mux", audio_parents,
|
|
ARRAY_SIZE(audio_parents),
|
|
CLK_SET_RATE_NO_REPARENT,
|
|
clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL);
|
|
clk = clk_register_gate(NULL, "audio", "audio_mux", 0,
|
|
clk_base + AUDIO_SYNC_CLK, 4,
|
|
CLK_GATE_SET_TO_DISABLE, NULL);
|
|
clks[TEGRA20_CLK_AUDIO] = clk;
|
|
|
|
/* audio_2x */
|
|
clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio",
|
|
CLK_SET_RATE_PARENT, 2, 1);
|
|
clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler",
|
|
TEGRA_PERIPH_NO_RESET, clk_base,
|
|
CLK_SET_RATE_PARENT, 89,
|
|
periph_clk_enb_refcnt);
|
|
clks[TEGRA20_CLK_AUDIO_2X] = clk;
|
|
}
|
|
|
|
static const char *i2s1_parents[] = { "pll_a_out0", "audio_2x", "pll_p",
|
|
"clk_m" };
|
|
static const char *i2s2_parents[] = { "pll_a_out0", "audio_2x", "pll_p",
|
|
"clk_m" };
|
|
static const char *pwm_parents[] = { "pll_p", "pll_c", "audio", "clk_m",
|
|
"clk_32k" };
|
|
static const char *mux_pllpcm_clkm[] = { "pll_p", "pll_c", "pll_m", "clk_m" };
|
|
static const char *mux_pllpdc_clkm[] = { "pll_p", "pll_d_out0", "pll_c",
|
|
"clk_m" };
|
|
static const char *mux_pllmcp_clkm[] = { "pll_m", "pll_c", "pll_p", "clk_m" };
|
|
|
|
static struct tegra_periph_init_data tegra_periph_clk_list[] = {
|
|
TEGRA_INIT_DATA_MUX("i2s1", i2s1_parents, CLK_SOURCE_I2S1, 11, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S1),
|
|
TEGRA_INIT_DATA_MUX("i2s2", i2s2_parents, CLK_SOURCE_I2S2, 18, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S2),
|
|
TEGRA_INIT_DATA_MUX("spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_SPI),
|
|
TEGRA_INIT_DATA_MUX("xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, 0, TEGRA20_CLK_XIO),
|
|
TEGRA_INIT_DATA_MUX("twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_TWC),
|
|
TEGRA_INIT_DATA_MUX("ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, 0, TEGRA20_CLK_IDE),
|
|
TEGRA_INIT_DATA_DIV16("dvc", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_DVC),
|
|
TEGRA_INIT_DATA_DIV16("i2c1", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C1),
|
|
TEGRA_INIT_DATA_DIV16("i2c2", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C2),
|
|
TEGRA_INIT_DATA_DIV16("i2c3", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C3),
|
|
TEGRA_INIT_DATA_MUX("hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, 0, TEGRA20_CLK_HDMI),
|
|
TEGRA_INIT_DATA("pwm", NULL, NULL, pwm_parents, CLK_SOURCE_PWM, 28, 3, 0, 0, 8, 1, 0, 17, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_PWM),
|
|
};
|
|
|
|
static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = {
|
|
TEGRA_INIT_DATA_NODIV("uarta", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTA),
|
|
TEGRA_INIT_DATA_NODIV("uartb", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTB),
|
|
TEGRA_INIT_DATA_NODIV("uartc", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTC),
|
|
TEGRA_INIT_DATA_NODIV("uartd", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTD),
|
|
TEGRA_INIT_DATA_NODIV("uarte", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTE),
|
|
TEGRA_INIT_DATA_NODIV("disp1", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, 0, TEGRA20_CLK_DISP1),
|
|
TEGRA_INIT_DATA_NODIV("disp2", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, 0, TEGRA20_CLK_DISP2),
|
|
};
|
|
|
|
static void __init tegra20_emc_clk_init(void)
|
|
{
|
|
struct clk *clk;
|
|
|
|
clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
|
|
ARRAY_SIZE(mux_pllmcp_clkm),
|
|
CLK_SET_RATE_NO_REPARENT,
|
|
clk_base + CLK_SOURCE_EMC,
|
|
30, 2, 0, &emc_lock);
|
|
|
|
clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC,
|
|
&emc_lock);
|
|
clks[TEGRA20_CLK_MC] = clk;
|
|
|
|
/*
|
|
* Note that 'emc_mux' source and 'emc' rate shouldn't be changed at
|
|
* the same time due to a HW bug, this won't happen because we're
|
|
* defining 'emc_mux' and 'emc' as distinct clocks.
|
|
*/
|
|
clk = tegra_clk_register_divider("emc", "emc_mux",
|
|
clk_base + CLK_SOURCE_EMC, CLK_IS_CRITICAL,
|
|
TEGRA_DIVIDER_INT, 0, 8, 1, &emc_lock);
|
|
clks[TEGRA20_CLK_EMC] = clk;
|
|
}
|
|
|
|
static void __init tegra20_periph_clk_init(void)
|
|
{
|
|
struct tegra_periph_init_data *data;
|
|
struct clk *clk;
|
|
unsigned int i;
|
|
|
|
/* ac97 */
|
|
clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0",
|
|
TEGRA_PERIPH_ON_APB,
|
|
clk_base, 0, 3, periph_clk_enb_refcnt);
|
|
clks[TEGRA20_CLK_AC97] = clk;
|
|
|
|
/* emc */
|
|
tegra20_emc_clk_init();
|
|
|
|
/* dsi */
|
|
clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0,
|
|
48, periph_clk_enb_refcnt);
|
|
clk_register_clkdev(clk, NULL, "dsi");
|
|
clks[TEGRA20_CLK_DSI] = clk;
|
|
|
|
/* pex */
|
|
clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70,
|
|
periph_clk_enb_refcnt);
|
|
clks[TEGRA20_CLK_PEX] = clk;
|
|
|
|
/* dev1 OSC divider */
|
|
clk_register_divider(NULL, "dev1_osc_div", "clk_m",
|
|
0, clk_base + MISC_CLK_ENB, 22, 2,
|
|
CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY,
|
|
NULL);
|
|
|
|
/* dev2 OSC divider */
|
|
clk_register_divider(NULL, "dev2_osc_div", "clk_m",
|
|
0, clk_base + MISC_CLK_ENB, 20, 2,
|
|
CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY,
|
|
NULL);
|
|
|
|
/* cdev1 */
|
|
clk = tegra_clk_register_periph_gate("cdev1", "cdev1_mux", 0,
|
|
clk_base, 0, 94, periph_clk_enb_refcnt);
|
|
clks[TEGRA20_CLK_CDEV1] = clk;
|
|
|
|
/* cdev2 */
|
|
clk = tegra_clk_register_periph_gate("cdev2", "cdev2_mux", 0,
|
|
clk_base, 0, 93, periph_clk_enb_refcnt);
|
|
clks[TEGRA20_CLK_CDEV2] = clk;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) {
|
|
data = &tegra_periph_clk_list[i];
|
|
clk = tegra_clk_register_periph_data(clk_base, data);
|
|
clks[data->clk_id] = clk;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) {
|
|
data = &tegra_periph_nodiv_clk_list[i];
|
|
clk = tegra_clk_register_periph_nodiv(data->name,
|
|
data->p.parent_names,
|
|
data->num_parents, &data->periph,
|
|
clk_base, data->offset);
|
|
clks[data->clk_id] = clk;
|
|
}
|
|
|
|
tegra_periph_clk_init(clk_base, pmc_base, tegra20_clks, &pll_p_params);
|
|
}
|
|
|
|
static void __init tegra20_osc_clk_init(void)
|
|
{
|
|
struct clk *clk;
|
|
unsigned long input_freq;
|
|
unsigned int pll_ref_div;
|
|
|
|
input_freq = tegra20_clk_measure_input_freq();
|
|
|
|
/* clk_m */
|
|
clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IGNORE_UNUSED,
|
|
input_freq);
|
|
clks[TEGRA20_CLK_CLK_M] = clk;
|
|
|
|
/* pll_ref */
|
|
pll_ref_div = tegra20_get_pll_ref_div();
|
|
clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m",
|
|
CLK_SET_RATE_PARENT, 1, pll_ref_div);
|
|
clks[TEGRA20_CLK_PLL_REF] = clk;
|
|
}
|
|
|
|
/* Tegra20 CPU clock and reset control functions */
|
|
static void tegra20_wait_cpu_in_reset(u32 cpu)
|
|
{
|
|
unsigned int reg;
|
|
|
|
do {
|
|
reg = readl(clk_base +
|
|
TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
|
|
cpu_relax();
|
|
} while (!(reg & (1 << cpu))); /* check CPU been reset or not */
|
|
|
|
return;
|
|
}
|
|
|
|
static void tegra20_put_cpu_in_reset(u32 cpu)
|
|
{
|
|
writel(CPU_RESET(cpu),
|
|
clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
|
|
dmb();
|
|
}
|
|
|
|
static void tegra20_cpu_out_of_reset(u32 cpu)
|
|
{
|
|
writel(CPU_RESET(cpu),
|
|
clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR);
|
|
wmb();
|
|
}
|
|
|
|
static void tegra20_enable_cpu_clock(u32 cpu)
|
|
{
|
|
unsigned int reg;
|
|
|
|
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
|
|
writel(reg & ~CPU_CLOCK(cpu),
|
|
clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
|
|
barrier();
|
|
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
|
|
}
|
|
|
|
static void tegra20_disable_cpu_clock(u32 cpu)
|
|
{
|
|
unsigned int reg;
|
|
|
|
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
|
|
writel(reg | CPU_CLOCK(cpu),
|
|
clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static bool tegra20_cpu_rail_off_ready(void)
|
|
{
|
|
unsigned int cpu_rst_status;
|
|
|
|
cpu_rst_status = readl(clk_base +
|
|
TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
|
|
|
|
return !!(cpu_rst_status & 0x2);
|
|
}
|
|
|
|
static void tegra20_cpu_clock_suspend(void)
|
|
{
|
|
/* switch coresite to clk_m, save off original source */
|
|
tegra20_cpu_clk_sctx.clk_csite_src =
|
|
readl(clk_base + CLK_SOURCE_CSITE);
|
|
writel(3<<30, clk_base + CLK_SOURCE_CSITE);
|
|
|
|
tegra20_cpu_clk_sctx.cpu_burst =
|
|
readl(clk_base + CCLK_BURST_POLICY);
|
|
tegra20_cpu_clk_sctx.pllx_base =
|
|
readl(clk_base + PLLX_BASE);
|
|
tegra20_cpu_clk_sctx.pllx_misc =
|
|
readl(clk_base + PLLX_MISC);
|
|
tegra20_cpu_clk_sctx.cclk_divider =
|
|
readl(clk_base + SUPER_CCLK_DIVIDER);
|
|
}
|
|
|
|
static void tegra20_cpu_clock_resume(void)
|
|
{
|
|
unsigned int reg, policy;
|
|
|
|
/* Is CPU complex already running on PLLX? */
|
|
reg = readl(clk_base + CCLK_BURST_POLICY);
|
|
policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF;
|
|
|
|
if (policy == CCLK_IDLE_POLICY)
|
|
reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF;
|
|
else if (policy == CCLK_RUN_POLICY)
|
|
reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF;
|
|
else
|
|
BUG();
|
|
|
|
if (reg != CCLK_BURST_POLICY_PLLX) {
|
|
/* restore PLLX settings if CPU is on different PLL */
|
|
writel(tegra20_cpu_clk_sctx.pllx_misc,
|
|
clk_base + PLLX_MISC);
|
|
writel(tegra20_cpu_clk_sctx.pllx_base,
|
|
clk_base + PLLX_BASE);
|
|
|
|
/* wait for PLL stabilization if PLLX was enabled */
|
|
if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30))
|
|
udelay(300);
|
|
}
|
|
|
|
/*
|
|
* Restore original burst policy setting for calls resulting from CPU
|
|
* LP2 in idle or system suspend.
|
|
*/
|
|
writel(tegra20_cpu_clk_sctx.cclk_divider,
|
|
clk_base + SUPER_CCLK_DIVIDER);
|
|
writel(tegra20_cpu_clk_sctx.cpu_burst,
|
|
clk_base + CCLK_BURST_POLICY);
|
|
|
|
writel(tegra20_cpu_clk_sctx.clk_csite_src,
|
|
clk_base + CLK_SOURCE_CSITE);
|
|
}
|
|
#endif
|
|
|
|
static struct tegra_cpu_car_ops tegra20_cpu_car_ops = {
|
|
.wait_for_reset = tegra20_wait_cpu_in_reset,
|
|
.put_in_reset = tegra20_put_cpu_in_reset,
|
|
.out_of_reset = tegra20_cpu_out_of_reset,
|
|
.enable_clock = tegra20_enable_cpu_clock,
|
|
.disable_clock = tegra20_disable_cpu_clock,
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.rail_off_ready = tegra20_cpu_rail_off_ready,
|
|
.suspend = tegra20_cpu_clock_suspend,
|
|
.resume = tegra20_cpu_clock_resume,
|
|
#endif
|
|
};
|
|
|
|
static struct tegra_clk_init_table init_table[] __initdata = {
|
|
{ TEGRA20_CLK_PLL_P, TEGRA20_CLK_CLK_MAX, 216000000, 1 },
|
|
{ TEGRA20_CLK_PLL_P_OUT1, TEGRA20_CLK_CLK_MAX, 28800000, 1 },
|
|
{ TEGRA20_CLK_PLL_P_OUT2, TEGRA20_CLK_CLK_MAX, 48000000, 1 },
|
|
{ TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1 },
|
|
{ TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1 },
|
|
{ TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 0 },
|
|
{ TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 240000000, 0 },
|
|
{ TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 240000000, 0 },
|
|
{ TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 240000000, 0 },
|
|
{ TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 0 },
|
|
{ TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1 },
|
|
{ TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1 },
|
|
{ TEGRA20_CLK_UARTA, TEGRA20_CLK_PLL_P, 0, 0 },
|
|
{ TEGRA20_CLK_UARTB, TEGRA20_CLK_PLL_P, 0, 0 },
|
|
{ TEGRA20_CLK_UARTC, TEGRA20_CLK_PLL_P, 0, 0 },
|
|
{ TEGRA20_CLK_UARTD, TEGRA20_CLK_PLL_P, 0, 0 },
|
|
{ TEGRA20_CLK_UARTE, TEGRA20_CLK_PLL_P, 0, 0 },
|
|
{ TEGRA20_CLK_PLL_A, TEGRA20_CLK_CLK_MAX, 56448000, 1 },
|
|
{ TEGRA20_CLK_PLL_A_OUT0, TEGRA20_CLK_CLK_MAX, 11289600, 1 },
|
|
{ TEGRA20_CLK_CDEV1, TEGRA20_CLK_CLK_MAX, 0, 1 },
|
|
{ TEGRA20_CLK_BLINK, TEGRA20_CLK_CLK_MAX, 32768, 1 },
|
|
{ TEGRA20_CLK_I2S1, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 },
|
|
{ TEGRA20_CLK_I2S2, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 },
|
|
{ TEGRA20_CLK_SDMMC1, TEGRA20_CLK_PLL_P, 48000000, 0 },
|
|
{ TEGRA20_CLK_SDMMC3, TEGRA20_CLK_PLL_P, 48000000, 0 },
|
|
{ TEGRA20_CLK_SDMMC4, TEGRA20_CLK_PLL_P, 48000000, 0 },
|
|
{ TEGRA20_CLK_SPI, TEGRA20_CLK_PLL_P, 20000000, 0 },
|
|
{ TEGRA20_CLK_SBC1, TEGRA20_CLK_PLL_P, 100000000, 0 },
|
|
{ TEGRA20_CLK_SBC2, TEGRA20_CLK_PLL_P, 100000000, 0 },
|
|
{ TEGRA20_CLK_SBC3, TEGRA20_CLK_PLL_P, 100000000, 0 },
|
|
{ TEGRA20_CLK_SBC4, TEGRA20_CLK_PLL_P, 100000000, 0 },
|
|
{ TEGRA20_CLK_HOST1X, TEGRA20_CLK_PLL_C, 150000000, 0 },
|
|
{ TEGRA20_CLK_DISP1, TEGRA20_CLK_PLL_P, 600000000, 0 },
|
|
{ TEGRA20_CLK_DISP2, TEGRA20_CLK_PLL_P, 600000000, 0 },
|
|
{ TEGRA20_CLK_GR2D, TEGRA20_CLK_PLL_C, 300000000, 0 },
|
|
{ TEGRA20_CLK_GR3D, TEGRA20_CLK_PLL_C, 300000000, 0 },
|
|
{ TEGRA20_CLK_VDE, TEGRA20_CLK_CLK_MAX, 300000000, 0 },
|
|
/* must be the last entry */
|
|
{ TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_CLK_MAX, 0, 0 },
|
|
};
|
|
|
|
static void __init tegra20_clock_apply_init_table(void)
|
|
{
|
|
tegra_init_from_table(init_table, clks, TEGRA20_CLK_CLK_MAX);
|
|
}
|
|
|
|
/*
|
|
* Some clocks may be used by different drivers depending on the board
|
|
* configuration. List those here to register them twice in the clock lookup
|
|
* table under two names.
|
|
*/
|
|
static struct tegra_clk_duplicate tegra_clk_duplicates[] = {
|
|
TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "utmip-pad", NULL),
|
|
TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-ehci.0", NULL),
|
|
TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-otg", NULL),
|
|
TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CCLK, NULL, "cpu"),
|
|
/* must be the last entry */
|
|
TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CLK_MAX, NULL, NULL),
|
|
};
|
|
|
|
static const struct of_device_id pmc_match[] __initconst = {
|
|
{ .compatible = "nvidia,tegra20-pmc" },
|
|
{ },
|
|
};
|
|
|
|
static struct clk *tegra20_clk_src_onecell_get(struct of_phandle_args *clkspec,
|
|
void *data)
|
|
{
|
|
struct clk_hw *parent_hw;
|
|
struct clk_hw *hw;
|
|
struct clk *clk;
|
|
|
|
clk = of_clk_src_onecell_get(clkspec, data);
|
|
if (IS_ERR(clk))
|
|
return clk;
|
|
|
|
/*
|
|
* Tegra20 CDEV1 and CDEV2 clocks are a bit special case, their parent
|
|
* clock is created by the pinctrl driver. It is possible for clk user
|
|
* to request these clocks before pinctrl driver got probed and hence
|
|
* user will get an orphaned clock. That might be undesirable because
|
|
* user may expect parent clock to be enabled by the child.
|
|
*/
|
|
if (clkspec->args[0] == TEGRA20_CLK_CDEV1 ||
|
|
clkspec->args[0] == TEGRA20_CLK_CDEV2) {
|
|
hw = __clk_get_hw(clk);
|
|
|
|
parent_hw = clk_hw_get_parent(hw);
|
|
if (!parent_hw)
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
|
|
return clk;
|
|
}
|
|
|
|
static void __init tegra20_clock_init(struct device_node *np)
|
|
{
|
|
struct device_node *node;
|
|
|
|
clk_base = of_iomap(np, 0);
|
|
if (!clk_base) {
|
|
pr_err("Can't map CAR registers\n");
|
|
BUG();
|
|
}
|
|
|
|
node = of_find_matching_node(NULL, pmc_match);
|
|
if (!node) {
|
|
pr_err("Failed to find pmc node\n");
|
|
BUG();
|
|
}
|
|
|
|
pmc_base = of_iomap(node, 0);
|
|
if (!pmc_base) {
|
|
pr_err("Can't map pmc registers\n");
|
|
BUG();
|
|
}
|
|
|
|
clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX,
|
|
TEGRA20_CLK_PERIPH_BANKS);
|
|
if (!clks)
|
|
return;
|
|
|
|
tegra20_osc_clk_init();
|
|
tegra_fixed_clk_init(tegra20_clks);
|
|
tegra20_pll_init();
|
|
tegra20_super_clk_init();
|
|
tegra_super_clk_gen4_init(clk_base, pmc_base, tegra20_clks, NULL);
|
|
tegra20_periph_clk_init();
|
|
tegra20_audio_clk_init();
|
|
tegra_pmc_clk_init(pmc_base, tegra20_clks);
|
|
|
|
tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX);
|
|
|
|
tegra_add_of_provider(np, tegra20_clk_src_onecell_get);
|
|
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
|
|
|
|
tegra_clk_apply_init_table = tegra20_clock_apply_init_table;
|
|
|
|
tegra_cpu_car_ops = &tegra20_cpu_car_ops;
|
|
}
|
|
CLK_OF_DECLARE(tegra20, "nvidia,tegra20-car", tegra20_clock_init);
|