347 lines
12 KiB
C
Executable file
347 lines
12 KiB
C
Executable file
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2017, Intel Corporation
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*/
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#include <linux/slab.h>
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#include <linux/clk-provider.h>
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#include <linux/of_device.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/clock/stratix10-clock.h>
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#include "stratix10-clk.h"
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static const char * const pll_mux[] = { "osc1", "cb-intosc-hs-div2-clk",
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"f2s-free-clk",};
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static const char * const cntr_mux[] = { "main_pll", "periph_pll",
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"osc1", "cb-intosc-hs-div2-clk",
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"f2s-free-clk"};
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static const char * const boot_mux[] = { "osc1", "cb-intosc-hs-div2-clk",};
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static const char * const noc_free_mux[] = {"main_noc_base_clk",
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"peri_noc_base_clk",
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"osc1", "cb-intosc-hs-div2-clk",
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"f2s-free-clk"};
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static const char * const emaca_free_mux[] = {"peri_emaca_clk", "boot_clk"};
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static const char * const emacb_free_mux[] = {"peri_emacb_clk", "boot_clk"};
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static const char * const emac_ptp_free_mux[] = {"peri_emac_ptp_clk", "boot_clk"};
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static const char * const gpio_db_free_mux[] = {"peri_gpio_db_clk", "boot_clk"};
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static const char * const sdmmc_free_mux[] = {"main_sdmmc_clk", "boot_clk"};
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static const char * const s2f_usr1_free_mux[] = {"peri_s2f_usr1_clk", "boot_clk"};
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static const char * const psi_ref_free_mux[] = {"peri_psi_ref_clk", "boot_clk"};
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static const char * const mpu_mux[] = { "mpu_free_clk", "boot_clk",};
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static const char * const s2f_usr0_mux[] = {"f2s-free-clk", "boot_clk"};
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static const char * const emac_mux[] = {"emaca_free_clk", "emacb_free_clk"};
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static const char * const noc_mux[] = {"noc_free_clk", "boot_clk"};
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static const char * const mpu_free_mux[] = {"main_mpu_base_clk",
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"peri_mpu_base_clk",
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"osc1", "cb-intosc-hs-div2-clk",
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"f2s-free-clk"};
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/* clocks in AO (always on) controller */
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static const struct stratix10_pll_clock s10_pll_clks[] = {
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{ STRATIX10_BOOT_CLK, "boot_clk", boot_mux, ARRAY_SIZE(boot_mux), 0,
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0x0},
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{ STRATIX10_MAIN_PLL_CLK, "main_pll", pll_mux, ARRAY_SIZE(pll_mux),
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0, 0x74},
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{ STRATIX10_PERIPH_PLL_CLK, "periph_pll", pll_mux, ARRAY_SIZE(pll_mux),
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0, 0xe4},
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};
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static const struct stratix10_perip_c_clock s10_main_perip_c_clks[] = {
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{ STRATIX10_MAIN_MPU_BASE_CLK, "main_mpu_base_clk", "main_pll", NULL, 1, 0, 0x84},
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{ STRATIX10_MAIN_NOC_BASE_CLK, "main_noc_base_clk", "main_pll", NULL, 1, 0, 0x88},
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{ STRATIX10_PERI_MPU_BASE_CLK, "peri_mpu_base_clk", "periph_pll", NULL, 1, 0,
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0xF4},
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{ STRATIX10_PERI_NOC_BASE_CLK, "peri_noc_base_clk", "periph_pll", NULL, 1, 0,
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0xF8},
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};
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static const struct stratix10_perip_cnt_clock s10_main_perip_cnt_clks[] = {
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{ STRATIX10_MPU_FREE_CLK, "mpu_free_clk", NULL, mpu_free_mux, ARRAY_SIZE(mpu_free_mux),
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0, 0x48, 0, 0, 0},
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{ STRATIX10_NOC_FREE_CLK, "noc_free_clk", NULL, noc_free_mux, ARRAY_SIZE(noc_free_mux),
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0, 0x4C, 0, 0, 0},
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{ STRATIX10_MAIN_EMACA_CLK, "main_emaca_clk", "main_noc_base_clk", NULL, 1, 0,
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0x50, 0, 0, 0},
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{ STRATIX10_MAIN_EMACB_CLK, "main_emacb_clk", "main_noc_base_clk", NULL, 1, 0,
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0x54, 0, 0, 0},
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{ STRATIX10_MAIN_EMAC_PTP_CLK, "main_emac_ptp_clk", "main_noc_base_clk", NULL, 1, 0,
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0x58, 0, 0, 0},
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{ STRATIX10_MAIN_GPIO_DB_CLK, "main_gpio_db_clk", "main_noc_base_clk", NULL, 1, 0,
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0x5C, 0, 0, 0},
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{ STRATIX10_MAIN_SDMMC_CLK, "main_sdmmc_clk", "main_noc_base_clk", NULL, 1, 0,
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0x60, 0, 0, 0},
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{ STRATIX10_MAIN_S2F_USR0_CLK, "main_s2f_usr0_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0x64, 0, 0, 0},
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{ STRATIX10_MAIN_S2F_USR1_CLK, "main_s2f_usr1_clk", "main_noc_base_clk", NULL, 1, 0,
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0x68, 0, 0, 0},
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{ STRATIX10_MAIN_PSI_REF_CLK, "main_psi_ref_clk", "main_noc_base_clk", NULL, 1, 0,
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0x6C, 0, 0, 0},
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{ STRATIX10_PERI_EMACA_CLK, "peri_emaca_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xBC, 0, 0, 0},
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{ STRATIX10_PERI_EMACB_CLK, "peri_emacb_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xC0, 0, 0, 0},
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{ STRATIX10_PERI_EMAC_PTP_CLK, "peri_emac_ptp_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xC4, 0, 0, 0},
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{ STRATIX10_PERI_GPIO_DB_CLK, "peri_gpio_db_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xC8, 0, 0, 0},
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{ STRATIX10_PERI_SDMMC_CLK, "peri_sdmmc_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xCC, 0, 0, 0},
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{ STRATIX10_PERI_S2F_USR0_CLK, "peri_s2f_usr0_clk", "peri_noc_base_clk", NULL, 1, 0,
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0xD0, 0, 0, 0},
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{ STRATIX10_PERI_S2F_USR1_CLK, "peri_s2f_usr1_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
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0, 0xD4, 0, 0, 0},
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{ STRATIX10_PERI_PSI_REF_CLK, "peri_psi_ref_clk", "peri_noc_base_clk", NULL, 1, 0,
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0xD8, 0, 0, 0},
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{ STRATIX10_L4_SYS_FREE_CLK, "l4_sys_free_clk", "noc_free_clk", NULL, 1, 0,
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0, 4, 0, 0},
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{ STRATIX10_NOC_CLK, "noc_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux),
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0, 0, 0, 0x3C, 1},
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{ STRATIX10_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux),
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0, 0, 2, 0xB0, 0},
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{ STRATIX10_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux),
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0, 0, 2, 0xB0, 1},
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{ STRATIX10_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux,
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ARRAY_SIZE(emac_ptp_free_mux), 0, 0, 2, 0xB0, 2},
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{ STRATIX10_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux,
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ARRAY_SIZE(gpio_db_free_mux), 0, 0, 0, 0xB0, 3},
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{ STRATIX10_SDMMC_FREE_CLK, "sdmmc_free_clk", NULL, sdmmc_free_mux,
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ARRAY_SIZE(sdmmc_free_mux), 0, 0, 0, 0xB0, 4},
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{ STRATIX10_S2F_USER1_FREE_CLK, "s2f_user1_free_clk", NULL, s2f_usr1_free_mux,
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ARRAY_SIZE(s2f_usr1_free_mux), 0, 0, 0, 0xB0, 5},
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{ STRATIX10_PSI_REF_FREE_CLK, "psi_ref_free_clk", NULL, psi_ref_free_mux,
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ARRAY_SIZE(psi_ref_free_mux), 0, 0, 0, 0xB0, 6},
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};
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static const struct stratix10_gate_clock s10_gate_clks[] = {
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{ STRATIX10_MPU_CLK, "mpu_clk", NULL, mpu_mux, ARRAY_SIZE(mpu_mux), 0, 0x30,
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0, 0, 0, 0, 0x3C, 0, 0},
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{ STRATIX10_MPU_PERIPH_CLK, "mpu_periph_clk", "mpu_clk", NULL, 1, 0, 0x30,
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0, 0, 0, 0, 0, 0, 4},
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{ STRATIX10_MPU_L2RAM_CLK, "mpu_l2ram_clk", "mpu_clk", NULL, 1, 0, 0x30,
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0, 0, 0, 0, 0, 0, 2},
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{ STRATIX10_L4_MAIN_CLK, "l4_main_clk", "noc_clk", NULL, 1, 0, 0x30,
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1, 0x70, 0, 2, 0, 0, 0},
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{ STRATIX10_L4_MP_CLK, "l4_mp_clk", "noc_clk", NULL, 1, 0, 0x30,
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2, 0x70, 8, 2, 0, 0, 0},
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{ STRATIX10_L4_SP_CLK, "l4_sp_clk", "noc_clk", NULL, 1, CLK_IS_CRITICAL, 0x30,
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3, 0x70, 16, 2, 0, 0, 0},
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{ STRATIX10_CS_AT_CLK, "cs_at_clk", "noc_clk", NULL, 1, 0, 0x30,
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4, 0x70, 24, 2, 0, 0, 0},
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{ STRATIX10_CS_TRACE_CLK, "cs_trace_clk", "noc_clk", NULL, 1, 0, 0x30,
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4, 0x70, 26, 2, 0, 0, 0},
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{ STRATIX10_CS_PDBG_CLK, "cs_pdbg_clk", "cs_at_clk", NULL, 1, 0, 0x30,
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4, 0x70, 28, 1, 0, 0, 0},
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{ STRATIX10_CS_TIMER_CLK, "cs_timer_clk", "noc_clk", NULL, 1, 0, 0x30,
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5, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_S2F_USER0_CLK, "s2f_user0_clk", NULL, s2f_usr0_mux, ARRAY_SIZE(s2f_usr0_mux), 0, 0x30,
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6, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_EMAC0_CLK, "emac0_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
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0, 0, 0, 0, 0xDC, 26, 0},
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{ STRATIX10_EMAC1_CLK, "emac1_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
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1, 0, 0, 0, 0xDC, 27, 0},
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{ STRATIX10_EMAC2_CLK, "emac2_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
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2, 0, 0, 0, 0xDC, 28, 0},
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{ STRATIX10_EMAC_PTP_CLK, "emac_ptp_clk", "emac_ptp_free_clk", NULL, 1, 0, 0xA4,
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3, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_GPIO_DB_CLK, "gpio_db_clk", "gpio_db_free_clk", NULL, 1, 0, 0xA4,
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4, 0xE0, 0, 16, 0, 0, 0},
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{ STRATIX10_SDMMC_CLK, "sdmmc_clk", "sdmmc_free_clk", NULL, 1, 0, 0xA4,
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5, 0, 0, 0, 0, 0, 4},
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{ STRATIX10_S2F_USER1_CLK, "s2f_user1_clk", "s2f_user1_free_clk", NULL, 1, 0, 0xA4,
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6, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_PSI_REF_CLK, "psi_ref_clk", "psi_ref_free_clk", NULL, 1, 0, 0xA4,
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7, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_USB_CLK, "usb_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
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8, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
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9, 0, 0, 0, 0, 0, 0},
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{ STRATIX10_NAND_CLK, "nand_clk", "l4_main_clk", NULL, 1, 0, 0xA4,
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10, 0, 0, 0, 0, 0, 0},
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};
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static int s10_clk_register_c_perip(const struct stratix10_perip_c_clock *clks,
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int nums, struct stratix10_clock_data *data)
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{
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struct clk *clk;
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void __iomem *base = data->base;
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int i;
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for (i = 0; i < nums; i++) {
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clk = s10_register_periph(clks[i].name, clks[i].parent_name,
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clks[i].parent_names, clks[i].num_parents,
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clks[i].flags, base, clks[i].offset);
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if (IS_ERR(clk)) {
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pr_err("%s: failed to register clock %s\n",
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__func__, clks[i].name);
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continue;
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}
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data->clk_data.clks[clks[i].id] = clk;
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}
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return 0;
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}
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static int s10_clk_register_cnt_perip(const struct stratix10_perip_cnt_clock *clks,
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int nums, struct stratix10_clock_data *data)
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{
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struct clk *clk;
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void __iomem *base = data->base;
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int i;
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for (i = 0; i < nums; i++) {
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clk = s10_register_cnt_periph(clks[i].name, clks[i].parent_name,
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clks[i].parent_names,
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clks[i].num_parents,
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clks[i].flags, base,
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clks[i].offset,
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clks[i].fixed_divider,
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clks[i].bypass_reg,
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clks[i].bypass_shift);
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if (IS_ERR(clk)) {
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pr_err("%s: failed to register clock %s\n",
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__func__, clks[i].name);
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continue;
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}
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data->clk_data.clks[clks[i].id] = clk;
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}
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return 0;
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}
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static int s10_clk_register_gate(const struct stratix10_gate_clock *clks,
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int nums, struct stratix10_clock_data *data)
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{
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struct clk *clk;
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void __iomem *base = data->base;
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int i;
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for (i = 0; i < nums; i++) {
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clk = s10_register_gate(clks[i].name, clks[i].parent_name,
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clks[i].parent_names,
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clks[i].num_parents,
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clks[i].flags, base,
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clks[i].gate_reg,
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clks[i].gate_idx, clks[i].div_reg,
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clks[i].div_offset, clks[i].div_width,
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clks[i].bypass_reg,
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clks[i].bypass_shift,
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clks[i].fixed_div);
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if (IS_ERR(clk)) {
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pr_err("%s: failed to register clock %s\n",
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__func__, clks[i].name);
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continue;
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}
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data->clk_data.clks[clks[i].id] = clk;
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}
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return 0;
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}
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static int s10_clk_register_pll(const struct stratix10_pll_clock *clks,
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int nums, struct stratix10_clock_data *data)
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{
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struct clk *clk;
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void __iomem *base = data->base;
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int i;
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for (i = 0; i < nums; i++) {
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clk = s10_register_pll(clks[i].name, clks[i].parent_names,
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clks[i].num_parents,
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clks[i].flags, base,
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clks[i].offset);
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if (IS_ERR(clk)) {
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pr_err("%s: failed to register clock %s\n",
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__func__, clks[i].name);
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continue;
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}
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data->clk_data.clks[clks[i].id] = clk;
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}
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return 0;
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}
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static struct stratix10_clock_data *__socfpga_s10_clk_init(struct platform_device *pdev,
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int nr_clks)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device *dev = &pdev->dev;
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struct stratix10_clock_data *clk_data;
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struct clk **clk_table;
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struct resource *res;
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void __iomem *base;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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base = devm_ioremap_resource(dev, res);
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if (IS_ERR(base)) {
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pr_err("%s: failed to map clock registers\n", __func__);
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return ERR_CAST(base);
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}
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clk_data = devm_kzalloc(dev, sizeof(*clk_data), GFP_KERNEL);
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if (!clk_data)
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return ERR_PTR(-ENOMEM);
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clk_data->base = base;
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clk_table = devm_kcalloc(dev, nr_clks, sizeof(*clk_table), GFP_KERNEL);
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if (!clk_table)
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return ERR_PTR(-ENOMEM);
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clk_data->clk_data.clks = clk_table;
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clk_data->clk_data.clk_num = nr_clks;
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of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data);
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return clk_data;
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}
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static int s10_clkmgr_init(struct platform_device *pdev)
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{
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struct stratix10_clock_data *clk_data;
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clk_data = __socfpga_s10_clk_init(pdev, STRATIX10_NUM_CLKS);
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if (IS_ERR(clk_data))
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return PTR_ERR(clk_data);
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s10_clk_register_pll(s10_pll_clks, ARRAY_SIZE(s10_pll_clks), clk_data);
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s10_clk_register_c_perip(s10_main_perip_c_clks,
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ARRAY_SIZE(s10_main_perip_c_clks), clk_data);
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s10_clk_register_cnt_perip(s10_main_perip_cnt_clks,
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ARRAY_SIZE(s10_main_perip_cnt_clks),
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clk_data);
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s10_clk_register_gate(s10_gate_clks, ARRAY_SIZE(s10_gate_clks),
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clk_data);
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return 0;
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}
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static int s10_clkmgr_probe(struct platform_device *pdev)
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{
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return s10_clkmgr_init(pdev);
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}
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static const struct of_device_id stratix10_clkmgr_match_table[] = {
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{ .compatible = "intel,stratix10-clkmgr",
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.data = s10_clkmgr_init },
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{ }
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};
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static struct platform_driver stratix10_clkmgr_driver = {
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.probe = s10_clkmgr_probe,
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.driver = {
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.name = "stratix10-clkmgr",
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.suppress_bind_attrs = true,
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.of_match_table = stratix10_clkmgr_match_table,
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},
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};
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static int __init s10_clk_init(void)
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{
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return platform_driver_register(&stratix10_clkmgr_driver);
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}
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core_initcall(s10_clk_init);
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