112 lines
4.8 KiB
C
112 lines
4.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* PSC clock descriptions for TI DaVinci DM365
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*
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* Copyright (C) 2018 David Lechner <david@lechnology.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/clk/davinci.h>
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#include <linux/clk.h>
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#include <linux/clkdev.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include "psc.h"
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LPSC_CLKDEV1(vpss_slave_clkdev, "slave", "vpss");
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LPSC_CLKDEV1(spi1_clkdev, NULL, "spi_davinci.1");
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LPSC_CLKDEV1(mmcsd1_clkdev, NULL, "da830-mmc.1");
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LPSC_CLKDEV1(asp0_clkdev, NULL, "davinci-mcbsp");
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LPSC_CLKDEV1(usb_clkdev, "usb", NULL);
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LPSC_CLKDEV1(spi2_clkdev, NULL, "spi_davinci.2");
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LPSC_CLKDEV2(aemif_clkdev, "aemif", NULL,
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NULL, "ti-aemif");
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LPSC_CLKDEV1(mmcsd0_clkdev, NULL, "da830-mmc.0");
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LPSC_CLKDEV1(i2c_clkdev, NULL, "i2c_davinci.1");
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LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
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LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
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LPSC_CLKDEV1(spi0_clkdev, NULL, "spi_davinci.0");
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/* REVISIT: gpio-davinci.c should be modified to drop con_id */
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LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
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LPSC_CLKDEV1(timer0_clkdev, "timer0", NULL);
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LPSC_CLKDEV1(timer2_clkdev, NULL, "davinci-wdt");
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LPSC_CLKDEV1(spi3_clkdev, NULL, "spi_davinci.3");
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LPSC_CLKDEV1(spi4_clkdev, NULL, "spi_davinci.4");
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LPSC_CLKDEV2(emac_clkdev, NULL, "davinci_emac.1",
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"fck", "davinci_mdio.0");
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LPSC_CLKDEV1(voice_codec_clkdev, NULL, "davinci_voicecodec");
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LPSC_CLKDEV1(vpss_dac_clkdev, "vpss_dac", NULL);
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LPSC_CLKDEV1(vpss_master_clkdev, "master", "vpss");
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static const struct davinci_lpsc_clk_info dm365_psc_info[] = {
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LPSC(1, 0, vpss_slave, pll1_sysclk5, vpss_slave_clkdev, 0),
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LPSC(5, 0, timer3, pll1_auxclk, NULL, 0),
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LPSC(6, 0, spi1, pll1_sysclk4, spi1_clkdev, 0),
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LPSC(7, 0, mmcsd1, pll1_sysclk4, mmcsd1_clkdev, 0),
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LPSC(8, 0, asp0, pll1_sysclk4, asp0_clkdev, 0),
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LPSC(9, 0, usb, pll1_auxclk, usb_clkdev, 0),
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LPSC(10, 0, pwm3, pll1_auxclk, NULL, 0),
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LPSC(11, 0, spi2, pll1_sysclk4, spi2_clkdev, 0),
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LPSC(12, 0, rto, pll1_sysclk4, NULL, 0),
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LPSC(14, 0, aemif, pll1_sysclk4, aemif_clkdev, 0),
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LPSC(15, 0, mmcsd0, pll1_sysclk8, mmcsd0_clkdev, 0),
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LPSC(18, 0, i2c, pll1_auxclk, i2c_clkdev, 0),
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LPSC(19, 0, uart0, pll1_auxclk, uart0_clkdev, 0),
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LPSC(20, 0, uart1, pll1_sysclk4, uart1_clkdev, 0),
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LPSC(22, 0, spi0, pll1_sysclk4, spi0_clkdev, 0),
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LPSC(23, 0, pwm0, pll1_auxclk, NULL, 0),
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LPSC(24, 0, pwm1, pll1_auxclk, NULL, 0),
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LPSC(25, 0, pwm2, pll1_auxclk, NULL, 0),
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LPSC(26, 0, gpio, pll1_sysclk4, gpio_clkdev, 0),
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LPSC(27, 0, timer0, pll1_auxclk, timer0_clkdev, LPSC_ALWAYS_ENABLED),
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LPSC(28, 0, timer1, pll1_auxclk, NULL, 0),
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/* REVISIT: why can't this be disabled? */
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LPSC(29, 0, timer2, pll1_auxclk, timer2_clkdev, LPSC_ALWAYS_ENABLED),
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LPSC(31, 0, arm, pll2_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
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LPSC(38, 0, spi3, pll1_sysclk4, spi3_clkdev, 0),
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LPSC(39, 0, spi4, pll1_auxclk, spi4_clkdev, 0),
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LPSC(40, 0, emac, pll1_sysclk4, emac_clkdev, 0),
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/*
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* The TRM (ARM Subsystem User's Guide) shows two clocks input into
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* voice codec module (PLL2 SYSCLK4 with a DIV2 and PLL1 SYSCLK4). Its
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* not fully clear from documentation which clock should be considered
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* as parent for PSC. The clock chosen here is to maintain
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* compatibility with existing code in arch/arm/mach-davinci/dm365.c
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*/
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LPSC(44, 0, voice_codec, pll2_sysclk4, voice_codec_clkdev, 0),
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/*
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* Its not fully clear from TRM (ARM Subsystem User's Guide) as to what
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* the parent of VPSS DAC LPSC should actually be. PLL1 SYSCLK3 feeds
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* into HDVICP and MJCP. The clock chosen here is to remain compatible
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* with code existing in arch/arm/mach-davinci/dm365.c
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*/
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LPSC(46, 0, vpss_dac, pll1_sysclk3, vpss_dac_clkdev, 0),
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LPSC(47, 0, vpss_master, pll1_sysclk5, vpss_master_clkdev, 0),
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LPSC(50, 0, mjcp, pll1_sysclk3, NULL, 0),
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{ }
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};
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int dm365_psc_init(struct device *dev, void __iomem *base)
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{
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return davinci_psc_register_clocks(dev, dm365_psc_info, 52, base);
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}
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static struct clk_bulk_data dm365_psc_parent_clks[] = {
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{ .id = "pll1_sysclk1" },
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{ .id = "pll1_sysclk3" },
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{ .id = "pll1_sysclk4" },
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{ .id = "pll1_sysclk5" },
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{ .id = "pll1_sysclk8" },
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{ .id = "pll2_sysclk2" },
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{ .id = "pll2_sysclk4" },
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{ .id = "pll1_auxclk" },
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};
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const struct davinci_psc_init_data dm365_psc_init_data = {
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.parent_clks = dm365_psc_parent_clks,
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.num_parent_clks = ARRAY_SIZE(dm365_psc_parent_clks),
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.psc_init = &dm365_psc_init,
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};
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