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linux/drivers/clk/samsung/clk-s3c64xx.c
Sylwester Nawrocki d5e136a21b clk: samsung: Register clk provider only after registering its all clocks 
Ensure the clock provider is not registered until after all its related
clocks were created and are ready to use. Currently there are races
possible and any (of_)clk_get() call right after a clock provider's
clk_init_cb callback call may fail.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 15:07:55 +02:00

541 lines
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/*
* Copyright (c) 2013 Tomasz Figa <tomasz.figa at gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Common Clock Framework support for all S3C64xx SoCs.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/syscore_ops.h>
#include <dt-bindings/clock/samsung,s3c64xx-clock.h>
#include "clk.h"
#include "clk-pll.h"
/* S3C64xx clock controller register offsets. */
#define APLL_LOCK 0x000
#define MPLL_LOCK 0x004
#define EPLL_LOCK 0x008
#define APLL_CON 0x00c
#define MPLL_CON 0x010
#define EPLL_CON0 0x014
#define EPLL_CON1 0x018
#define CLK_SRC 0x01c
#define CLK_DIV0 0x020
#define CLK_DIV1 0x024
#define CLK_DIV2 0x028
#define HCLK_GATE 0x030
#define PCLK_GATE 0x034
#define SCLK_GATE 0x038
#define MEM0_GATE 0x03c
#define CLK_SRC2 0x10c
#define OTHERS 0x900
/* Helper macros to define clock arrays. */
#define FIXED_RATE_CLOCKS(name) \
static struct samsung_fixed_rate_clock name[]
#define MUX_CLOCKS(name) \
static struct samsung_mux_clock name[]
#define DIV_CLOCKS(name) \
static struct samsung_div_clock name[]
#define GATE_CLOCKS(name) \
static struct samsung_gate_clock name[]
/* Helper macros for gate types present on S3C64xx. */
#define GATE_BUS(_id, cname, pname, o, b) \
GATE(_id, cname, pname, o, b, 0, 0)
#define GATE_SCLK(_id, cname, pname, o, b) \
GATE(_id, cname, pname, o, b, CLK_SET_RATE_PARENT, 0)
#define GATE_ON(_id, cname, pname, o, b) \
GATE(_id, cname, pname, o, b, CLK_IGNORE_UNUSED, 0)
/* list of PLLs to be registered */
enum s3c64xx_plls {
apll, mpll, epll,
};
static void __iomem *reg_base;
static bool is_s3c6400;
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *s3c64xx_save_common;
static struct samsung_clk_reg_dump *s3c64xx_save_soc;
/*
* List of controller registers to be saved and restored during
* a suspend/resume cycle.
*/
static unsigned long s3c64xx_clk_regs[] __initdata = {
APLL_LOCK,
MPLL_LOCK,
EPLL_LOCK,
APLL_CON,
MPLL_CON,
EPLL_CON0,
EPLL_CON1,
CLK_SRC,
CLK_DIV0,
CLK_DIV1,
CLK_DIV2,
HCLK_GATE,
PCLK_GATE,
SCLK_GATE,
};
static unsigned long s3c6410_clk_regs[] __initdata = {
CLK_SRC2,
MEM0_GATE,
};
static int s3c64xx_clk_suspend(void)
{
samsung_clk_save(reg_base, s3c64xx_save_common,
ARRAY_SIZE(s3c64xx_clk_regs));
if (!is_s3c6400)
samsung_clk_save(reg_base, s3c64xx_save_soc,
ARRAY_SIZE(s3c6410_clk_regs));
return 0;
}
static void s3c64xx_clk_resume(void)
{
samsung_clk_restore(reg_base, s3c64xx_save_common,
ARRAY_SIZE(s3c64xx_clk_regs));
if (!is_s3c6400)
samsung_clk_restore(reg_base, s3c64xx_save_soc,
ARRAY_SIZE(s3c6410_clk_regs));
}
static struct syscore_ops s3c64xx_clk_syscore_ops = {
.suspend = s3c64xx_clk_suspend,
.resume = s3c64xx_clk_resume,
};
static void s3c64xx_clk_sleep_init(void)
{
s3c64xx_save_common = samsung_clk_alloc_reg_dump(s3c64xx_clk_regs,
ARRAY_SIZE(s3c64xx_clk_regs));
if (!s3c64xx_save_common)
goto err_warn;
if (!is_s3c6400) {
s3c64xx_save_soc = samsung_clk_alloc_reg_dump(s3c6410_clk_regs,
ARRAY_SIZE(s3c6410_clk_regs));
if (!s3c64xx_save_soc)
goto err_soc;
}
register_syscore_ops(&s3c64xx_clk_syscore_ops);
return;
err_soc:
kfree(s3c64xx_save_common);
err_warn:
pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
__func__);
}
#else
static void s3c64xx_clk_sleep_init(void) {}
#endif
/* List of parent clocks common for all S3C64xx SoCs. */
PNAME(spi_mmc_p) = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" };
PNAME(uart_p) = { "mout_epll", "dout_mpll" };
PNAME(audio0_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0",
"pcmcdclk0", "none", "none", "none" };
PNAME(audio1_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1",
"pcmcdclk0", "none", "none", "none" };
PNAME(mfc_p) = { "hclkx2", "mout_epll" };
PNAME(apll_p) = { "fin_pll", "fout_apll" };
PNAME(mpll_p) = { "fin_pll", "fout_mpll" };
PNAME(epll_p) = { "fin_pll", "fout_epll" };
PNAME(hclkx2_p) = { "mout_mpll", "mout_apll" };
/* S3C6400-specific parent clocks. */
PNAME(scaler_lcd_p6400) = { "mout_epll", "dout_mpll", "none", "none" };
PNAME(irda_p6400) = { "mout_epll", "dout_mpll", "none", "clk48m" };
PNAME(uhost_p6400) = { "clk48m", "mout_epll", "dout_mpll", "none" };
/* S3C6410-specific parent clocks. */
PNAME(clk27_p6410) = { "clk27m", "fin_pll" };
PNAME(scaler_lcd_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "none" };
PNAME(irda_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "clk48m" };
PNAME(uhost_p6410) = { "clk48m", "mout_epll", "dout_mpll", "fin_pll" };
PNAME(audio2_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2",
"pcmcdclk1", "none", "none", "none" };
/* Fixed rate clocks generated outside the SoC. */
FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_ext_clks) __initdata = {
FRATE(0, "fin_pll", NULL, CLK_IS_ROOT, 0),
FRATE(0, "xusbxti", NULL, CLK_IS_ROOT, 0),
};
/* Fixed rate clocks generated inside the SoC. */
FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_clks) __initdata = {
FRATE(CLK27M, "clk27m", NULL, CLK_IS_ROOT, 27000000),
FRATE(CLK48M, "clk48m", NULL, CLK_IS_ROOT, 48000000),
};
/* List of clock muxes present on all S3C64xx SoCs. */
MUX_CLOCKS(s3c64xx_mux_clks) __initdata = {
MUX_F(0, "mout_syncmux", hclkx2_p, OTHERS, 6, 1, 0, CLK_MUX_READ_ONLY),
MUX(MOUT_APLL, "mout_apll", apll_p, CLK_SRC, 0, 1),
MUX(MOUT_MPLL, "mout_mpll", mpll_p, CLK_SRC, 1, 1),
MUX(MOUT_EPLL, "mout_epll", epll_p, CLK_SRC, 2, 1),
MUX(MOUT_MFC, "mout_mfc", mfc_p, CLK_SRC, 4, 1),
MUX(MOUT_AUDIO0, "mout_audio0", audio0_p, CLK_SRC, 7, 3),
MUX(MOUT_AUDIO1, "mout_audio1", audio1_p, CLK_SRC, 10, 3),
MUX(MOUT_UART, "mout_uart", uart_p, CLK_SRC, 13, 1),
MUX(MOUT_SPI0, "mout_spi0", spi_mmc_p, CLK_SRC, 14, 2),
MUX(MOUT_SPI1, "mout_spi1", spi_mmc_p, CLK_SRC, 16, 2),
MUX(MOUT_MMC0, "mout_mmc0", spi_mmc_p, CLK_SRC, 18, 2),
MUX(MOUT_MMC1, "mout_mmc1", spi_mmc_p, CLK_SRC, 20, 2),
MUX(MOUT_MMC2, "mout_mmc2", spi_mmc_p, CLK_SRC, 22, 2),
};
/* List of clock muxes present on S3C6400. */
MUX_CLOCKS(s3c6400_mux_clks) __initdata = {
MUX(MOUT_UHOST, "mout_uhost", uhost_p6400, CLK_SRC, 5, 2),
MUX(MOUT_IRDA, "mout_irda", irda_p6400, CLK_SRC, 24, 2),
MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6400, CLK_SRC, 26, 2),
MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6400, CLK_SRC, 28, 2),
};
/* List of clock muxes present on S3C6410. */
MUX_CLOCKS(s3c6410_mux_clks) __initdata = {
MUX(MOUT_UHOST, "mout_uhost", uhost_p6410, CLK_SRC, 5, 2),
MUX(MOUT_IRDA, "mout_irda", irda_p6410, CLK_SRC, 24, 2),
MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6410, CLK_SRC, 26, 2),
MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6410, CLK_SRC, 28, 2),
MUX(MOUT_DAC27, "mout_dac27", clk27_p6410, CLK_SRC, 30, 1),
MUX(MOUT_TV27, "mout_tv27", clk27_p6410, CLK_SRC, 31, 1),
MUX(MOUT_AUDIO2, "mout_audio2", audio2_p6410, CLK_SRC2, 0, 3),
};
/* List of clock dividers present on all S3C64xx SoCs. */
DIV_CLOCKS(s3c64xx_div_clks) __initdata = {
DIV(DOUT_MPLL, "dout_mpll", "mout_mpll", CLK_DIV0, 4, 1),
DIV(HCLKX2, "hclkx2", "mout_syncmux", CLK_DIV0, 9, 3),
DIV(HCLK, "hclk", "hclkx2", CLK_DIV0, 8, 1),
DIV(PCLK, "pclk", "hclkx2", CLK_DIV0, 12, 4),
DIV(DOUT_SECUR, "dout_secur", "hclkx2", CLK_DIV0, 18, 2),
DIV(DOUT_CAM, "dout_cam", "hclkx2", CLK_DIV0, 20, 4),
DIV(DOUT_JPEG, "dout_jpeg", "hclkx2", CLK_DIV0, 24, 4),
DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV0, 28, 4),
DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV1, 0, 4),
DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV1, 4, 4),
DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV1, 8, 4),
DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV1, 12, 4),
DIV(DOUT_SCALER, "dout_scaler", "mout_scaler", CLK_DIV1, 16, 4),
DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV1, 20, 4),
DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 0, 4),
DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 4, 4),
DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV2, 8, 4),
DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV2, 12, 4),
DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 16, 4),
DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 20, 4),
};
/* List of clock dividers present on S3C6400. */
DIV_CLOCKS(s3c6400_div_clks) __initdata = {
DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 3),
};
/* List of clock dividers present on S3C6410. */
DIV_CLOCKS(s3c6410_div_clks) __initdata = {
DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 4),
DIV(DOUT_FIMC, "dout_fimc", "hclk", CLK_DIV1, 24, 4),
DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV2, 24, 4),
};
/* List of clock gates present on all S3C64xx SoCs. */
GATE_CLOCKS(s3c64xx_gate_clks) __initdata = {
GATE_BUS(HCLK_UHOST, "hclk_uhost", "hclk", HCLK_GATE, 29),
GATE_BUS(HCLK_SECUR, "hclk_secur", "hclk", HCLK_GATE, 28),
GATE_BUS(HCLK_SDMA1, "hclk_sdma1", "hclk", HCLK_GATE, 27),
GATE_BUS(HCLK_SDMA0, "hclk_sdma0", "hclk", HCLK_GATE, 26),
GATE_ON(HCLK_DDR1, "hclk_ddr1", "hclk", HCLK_GATE, 24),
GATE_BUS(HCLK_USB, "hclk_usb", "hclk", HCLK_GATE, 20),
GATE_BUS(HCLK_HSMMC2, "hclk_hsmmc2", "hclk", HCLK_GATE, 19),
GATE_BUS(HCLK_HSMMC1, "hclk_hsmmc1", "hclk", HCLK_GATE, 18),
GATE_BUS(HCLK_HSMMC0, "hclk_hsmmc0", "hclk", HCLK_GATE, 17),
GATE_BUS(HCLK_MDP, "hclk_mdp", "hclk", HCLK_GATE, 16),
GATE_BUS(HCLK_DHOST, "hclk_dhost", "hclk", HCLK_GATE, 15),
GATE_BUS(HCLK_IHOST, "hclk_ihost", "hclk", HCLK_GATE, 14),
GATE_BUS(HCLK_DMA1, "hclk_dma1", "hclk", HCLK_GATE, 13),
GATE_BUS(HCLK_DMA0, "hclk_dma0", "hclk", HCLK_GATE, 12),
GATE_BUS(HCLK_JPEG, "hclk_jpeg", "hclk", HCLK_GATE, 11),
GATE_BUS(HCLK_CAMIF, "hclk_camif", "hclk", HCLK_GATE, 10),
GATE_BUS(HCLK_SCALER, "hclk_scaler", "hclk", HCLK_GATE, 9),
GATE_BUS(HCLK_2D, "hclk_2d", "hclk", HCLK_GATE, 8),
GATE_BUS(HCLK_TV, "hclk_tv", "hclk", HCLK_GATE, 7),
GATE_BUS(HCLK_POST0, "hclk_post0", "hclk", HCLK_GATE, 5),
GATE_BUS(HCLK_ROT, "hclk_rot", "hclk", HCLK_GATE, 4),
GATE_BUS(HCLK_LCD, "hclk_lcd", "hclk", HCLK_GATE, 3),
GATE_BUS(HCLK_TZIC, "hclk_tzic", "hclk", HCLK_GATE, 2),
GATE_ON(HCLK_INTC, "hclk_intc", "hclk", HCLK_GATE, 1),
GATE_ON(PCLK_SKEY, "pclk_skey", "pclk", PCLK_GATE, 24),
GATE_ON(PCLK_CHIPID, "pclk_chipid", "pclk", PCLK_GATE, 23),
GATE_BUS(PCLK_SPI1, "pclk_spi1", "pclk", PCLK_GATE, 22),
GATE_BUS(PCLK_SPI0, "pclk_spi0", "pclk", PCLK_GATE, 21),
GATE_BUS(PCLK_HSIRX, "pclk_hsirx", "pclk", PCLK_GATE, 20),
GATE_BUS(PCLK_HSITX, "pclk_hsitx", "pclk", PCLK_GATE, 19),
GATE_ON(PCLK_GPIO, "pclk_gpio", "pclk", PCLK_GATE, 18),
GATE_BUS(PCLK_IIC0, "pclk_iic0", "pclk", PCLK_GATE, 17),
GATE_BUS(PCLK_IIS1, "pclk_iis1", "pclk", PCLK_GATE, 16),
GATE_BUS(PCLK_IIS0, "pclk_iis0", "pclk", PCLK_GATE, 15),
GATE_BUS(PCLK_AC97, "pclk_ac97", "pclk", PCLK_GATE, 14),
GATE_BUS(PCLK_TZPC, "pclk_tzpc", "pclk", PCLK_GATE, 13),
GATE_BUS(PCLK_TSADC, "pclk_tsadc", "pclk", PCLK_GATE, 12),
GATE_BUS(PCLK_KEYPAD, "pclk_keypad", "pclk", PCLK_GATE, 11),
GATE_BUS(PCLK_IRDA, "pclk_irda", "pclk", PCLK_GATE, 10),
GATE_BUS(PCLK_PCM1, "pclk_pcm1", "pclk", PCLK_GATE, 9),
GATE_BUS(PCLK_PCM0, "pclk_pcm0", "pclk", PCLK_GATE, 8),
GATE_BUS(PCLK_PWM, "pclk_pwm", "pclk", PCLK_GATE, 7),
GATE_BUS(PCLK_RTC, "pclk_rtc", "pclk", PCLK_GATE, 6),
GATE_BUS(PCLK_WDT, "pclk_wdt", "pclk", PCLK_GATE, 5),
GATE_BUS(PCLK_UART3, "pclk_uart3", "pclk", PCLK_GATE, 4),
GATE_BUS(PCLK_UART2, "pclk_uart2", "pclk", PCLK_GATE, 3),
GATE_BUS(PCLK_UART1, "pclk_uart1", "pclk", PCLK_GATE, 2),
GATE_BUS(PCLK_UART0, "pclk_uart0", "pclk", PCLK_GATE, 1),
GATE_BUS(PCLK_MFC, "pclk_mfc", "pclk", PCLK_GATE, 0),
GATE_SCLK(SCLK_UHOST, "sclk_uhost", "dout_uhost", SCLK_GATE, 30),
GATE_SCLK(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", SCLK_GATE, 29),
GATE_SCLK(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", SCLK_GATE, 28),
GATE_SCLK(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", SCLK_GATE, 27),
GATE_SCLK(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", SCLK_GATE, 26),
GATE_SCLK(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", SCLK_GATE, 25),
GATE_SCLK(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", SCLK_GATE, 24),
GATE_SCLK(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", SCLK_GATE, 23),
GATE_SCLK(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", SCLK_GATE, 22),
GATE_SCLK(SCLK_SPI1, "sclk_spi1", "dout_spi1", SCLK_GATE, 21),
GATE_SCLK(SCLK_SPI0, "sclk_spi0", "dout_spi0", SCLK_GATE, 20),
GATE_SCLK(SCLK_DAC27, "sclk_dac27", "mout_dac27", SCLK_GATE, 19),
GATE_SCLK(SCLK_TV27, "sclk_tv27", "mout_tv27", SCLK_GATE, 18),
GATE_SCLK(SCLK_SCALER27, "sclk_scaler27", "clk27m", SCLK_GATE, 17),
GATE_SCLK(SCLK_SCALER, "sclk_scaler", "dout_scaler", SCLK_GATE, 16),
GATE_SCLK(SCLK_LCD27, "sclk_lcd27", "clk27m", SCLK_GATE, 15),
GATE_SCLK(SCLK_LCD, "sclk_lcd", "dout_lcd", SCLK_GATE, 14),
GATE_SCLK(SCLK_POST0_27, "sclk_post0_27", "clk27m", SCLK_GATE, 12),
GATE_SCLK(SCLK_POST0, "sclk_post0", "dout_lcd", SCLK_GATE, 10),
GATE_SCLK(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", SCLK_GATE, 9),
GATE_SCLK(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", SCLK_GATE, 8),
GATE_SCLK(SCLK_SECUR, "sclk_secur", "dout_secur", SCLK_GATE, 7),
GATE_SCLK(SCLK_IRDA, "sclk_irda", "dout_irda", SCLK_GATE, 6),
GATE_SCLK(SCLK_UART, "sclk_uart", "dout_uart", SCLK_GATE, 5),
GATE_SCLK(SCLK_MFC, "sclk_mfc", "dout_mfc", SCLK_GATE, 3),
GATE_SCLK(SCLK_CAM, "sclk_cam", "dout_cam", SCLK_GATE, 2),
GATE_SCLK(SCLK_JPEG, "sclk_jpeg", "dout_jpeg", SCLK_GATE, 1),
};
/* List of clock gates present on S3C6400. */
GATE_CLOCKS(s3c6400_gate_clks) __initdata = {
GATE_ON(HCLK_DDR0, "hclk_ddr0", "hclk", HCLK_GATE, 23),
GATE_SCLK(SCLK_ONENAND, "sclk_onenand", "parent", SCLK_GATE, 4),
};
/* List of clock gates present on S3C6410. */
GATE_CLOCKS(s3c6410_gate_clks) __initdata = {
GATE_BUS(HCLK_3DSE, "hclk_3dse", "hclk", HCLK_GATE, 31),
GATE_ON(HCLK_IROM, "hclk_irom", "hclk", HCLK_GATE, 25),
GATE_ON(HCLK_MEM1, "hclk_mem1", "hclk", HCLK_GATE, 22),
GATE_ON(HCLK_MEM0, "hclk_mem0", "hclk", HCLK_GATE, 21),
GATE_BUS(HCLK_MFC, "hclk_mfc", "hclk", HCLK_GATE, 0),
GATE_BUS(PCLK_IIC1, "pclk_iic1", "pclk", PCLK_GATE, 27),
GATE_BUS(PCLK_IIS2, "pclk_iis2", "pclk", PCLK_GATE, 26),
GATE_SCLK(SCLK_FIMC, "sclk_fimc", "dout_fimc", SCLK_GATE, 13),
GATE_SCLK(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", SCLK_GATE, 11),
GATE_BUS(MEM0_CFCON, "mem0_cfcon", "hclk_mem0", MEM0_GATE, 5),
GATE_BUS(MEM0_ONENAND1, "mem0_onenand1", "hclk_mem0", MEM0_GATE, 4),
GATE_BUS(MEM0_ONENAND0, "mem0_onenand0", "hclk_mem0", MEM0_GATE, 3),
GATE_BUS(MEM0_NFCON, "mem0_nfcon", "hclk_mem0", MEM0_GATE, 2),
GATE_ON(MEM0_SROM, "mem0_srom", "hclk_mem0", MEM0_GATE, 1),
};
/* List of PLL clocks. */
static struct samsung_pll_clock s3c64xx_pll_clks[] __initdata = {
[apll] = PLL(pll_6552, FOUT_APLL, "fout_apll", "fin_pll",
APLL_LOCK, APLL_CON, NULL),
[mpll] = PLL(pll_6552, FOUT_MPLL, "fout_mpll", "fin_pll",
MPLL_LOCK, MPLL_CON, NULL),
[epll] = PLL(pll_6553, FOUT_EPLL, "fout_epll", "fin_pll",
EPLL_LOCK, EPLL_CON0, NULL),
};
/* Aliases for common s3c64xx clocks. */
static struct samsung_clock_alias s3c64xx_clock_aliases[] = {
ALIAS(FOUT_APLL, NULL, "fout_apll"),
ALIAS(FOUT_MPLL, NULL, "fout_mpll"),
ALIAS(FOUT_EPLL, NULL, "fout_epll"),
ALIAS(MOUT_EPLL, NULL, "mout_epll"),
ALIAS(DOUT_MPLL, NULL, "dout_mpll"),
ALIAS(HCLKX2, NULL, "hclk2"),
ALIAS(HCLK, NULL, "hclk"),
ALIAS(PCLK, NULL, "pclk"),
ALIAS(PCLK, NULL, "clk_uart_baud2"),
ALIAS(ARMCLK, NULL, "armclk"),
ALIAS(HCLK_UHOST, "s3c2410-ohci", "usb-host"),
ALIAS(HCLK_USB, "s3c-hsotg", "otg"),
ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "hsmmc"),
ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"),
ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"),
ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"),
ALIAS(HCLK_CAMIF, "s3c-camif", "camif"),
ALIAS(HCLK_LCD, "s3c-fb", "lcd"),
ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"),
ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi"),
ALIAS(PCLK_IIC0, "s3c2440-i2c.0", "i2c"),
ALIAS(PCLK_IIS1, "samsung-i2s.1", "iis"),
ALIAS(PCLK_IIS0, "samsung-i2s.0", "iis"),
ALIAS(PCLK_AC97, "samsung-ac97", "ac97"),
ALIAS(PCLK_TSADC, "s3c64xx-adc", "adc"),
ALIAS(PCLK_KEYPAD, "samsung-keypad", "keypad"),
ALIAS(PCLK_PCM1, "samsung-pcm.1", "pcm"),
ALIAS(PCLK_PCM0, "samsung-pcm.0", "pcm"),
ALIAS(PCLK_PWM, NULL, "timers"),
ALIAS(PCLK_RTC, "s3c64xx-rtc", "rtc"),
ALIAS(PCLK_WDT, NULL, "watchdog"),
ALIAS(PCLK_UART3, "s3c6400-uart.3", "uart"),
ALIAS(PCLK_UART2, "s3c6400-uart.2", "uart"),
ALIAS(PCLK_UART1, "s3c6400-uart.1", "uart"),
ALIAS(PCLK_UART0, "s3c6400-uart.0", "uart"),
ALIAS(SCLK_UHOST, "s3c2410-ohci", "usb-bus-host"),
ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"),
ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"),
ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"),
ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi_busclk0"),
ALIAS(SCLK_SPI1, "s3c6410-spi.1", "spi_busclk2"),
ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi_busclk0"),
ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi_busclk2"),
ALIAS(SCLK_AUDIO1, "samsung-pcm.1", "audio-bus"),
ALIAS(SCLK_AUDIO1, "samsung-i2s.1", "audio-bus"),
ALIAS(SCLK_AUDIO0, "samsung-pcm.0", "audio-bus"),
ALIAS(SCLK_AUDIO0, "samsung-i2s.0", "audio-bus"),
ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
ALIAS(SCLK_CAM, "s3c-camif", "camera"),
};
/* Aliases for s3c6400-specific clocks. */
static struct samsung_clock_alias s3c6400_clock_aliases[] = {
/* Nothing to place here yet. */
};
/* Aliases for s3c6410-specific clocks. */
static struct samsung_clock_alias s3c6410_clock_aliases[] = {
ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"),
ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"),
ALIAS(SCLK_FIMC, "s3c-camif", "fimc"),
ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"),
ALIAS(MEM0_SROM, NULL, "srom"),
};
static void __init s3c64xx_clk_register_fixed_ext(
struct samsung_clk_provider *ctx,
unsigned long fin_pll_f,
unsigned long xusbxti_f)
{
s3c64xx_fixed_rate_ext_clks[0].fixed_rate = fin_pll_f;
s3c64xx_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f;
samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_ext_clks,
ARRAY_SIZE(s3c64xx_fixed_rate_ext_clks));
}
/* Register s3c64xx clocks. */
void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
unsigned long xusbxti_f, bool s3c6400,
void __iomem *base)
{
struct samsung_clk_provider *ctx;
reg_base = base;
is_s3c6400 = s3c6400;
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
}
ctx = samsung_clk_init(np, reg_base, NR_CLKS);
if (!ctx)
panic("%s: unable to allocate context.\n", __func__);
/* Register external clocks. */
if (!np)
s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f);
/* Register PLLs. */
samsung_clk_register_pll(ctx, s3c64xx_pll_clks,
ARRAY_SIZE(s3c64xx_pll_clks), reg_base);
/* Register common internal clocks. */
samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks,
ARRAY_SIZE(s3c64xx_fixed_rate_clks));
samsung_clk_register_mux(ctx, s3c64xx_mux_clks,
ARRAY_SIZE(s3c64xx_mux_clks));
samsung_clk_register_div(ctx, s3c64xx_div_clks,
ARRAY_SIZE(s3c64xx_div_clks));
samsung_clk_register_gate(ctx, s3c64xx_gate_clks,
ARRAY_SIZE(s3c64xx_gate_clks));
/* Register SoC-specific clocks. */
if (is_s3c6400) {
samsung_clk_register_mux(ctx, s3c6400_mux_clks,
ARRAY_SIZE(s3c6400_mux_clks));
samsung_clk_register_div(ctx, s3c6400_div_clks,
ARRAY_SIZE(s3c6400_div_clks));
samsung_clk_register_gate(ctx, s3c6400_gate_clks,
ARRAY_SIZE(s3c6400_gate_clks));
samsung_clk_register_alias(ctx, s3c6400_clock_aliases,
ARRAY_SIZE(s3c6400_clock_aliases));
} else {
samsung_clk_register_mux(ctx, s3c6410_mux_clks,
ARRAY_SIZE(s3c6410_mux_clks));
samsung_clk_register_div(ctx, s3c6410_div_clks,
ARRAY_SIZE(s3c6410_div_clks));
samsung_clk_register_gate(ctx, s3c6410_gate_clks,
ARRAY_SIZE(s3c6410_gate_clks));
samsung_clk_register_alias(ctx, s3c6410_clock_aliases,
ARRAY_SIZE(s3c6410_clock_aliases));
}
samsung_clk_register_alias(ctx, s3c64xx_clock_aliases,
ARRAY_SIZE(s3c64xx_clock_aliases));
s3c64xx_clk_sleep_init();
samsung_clk_of_add_provider(np, ctx);
pr_info("%s clocks: apll = %lu, mpll = %lu\n"
"\tepll = %lu, arm_clk = %lu\n",
is_s3c6400 ? "S3C6400" : "S3C6410",
_get_rate("fout_apll"), _get_rate("fout_mpll"),
_get_rate("fout_epll"), _get_rate("armclk"));
}
static void __init s3c6400_clk_init(struct device_node *np)
{
s3c64xx_clk_init(np, 0, 0, true, NULL);
}
CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init);
static void __init s3c6410_clk_init(struct device_node *np)
{
s3c64xx_clk_init(np, 0, 0, false, NULL);
}
CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init);
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