This patch adds new, Common Clock Framework-based clock driver for Samsung S3C64xx SoCs. The driver is just added, without actually letting the platforms use it yet, since this requires more intermediate steps. Signed-off-by: Tomasz Figa <tomasz.figa@xxxxxxxxx> Acked-by: Mike Turquette <mturquette@xxxxxxxxxx> --- .../bindings/clock/samsung,s3c64xx-clock.txt | 77 ++++ drivers/clk/samsung/Makefile | 3 + drivers/clk/samsung/clk-s3c64xx.c | 473 +++++++++++++++++++++ include/dt-bindings/clock/samsung,s3c64xx-clock.h | 178 ++++++++ 4 files changed, 731 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt create mode 100644 drivers/clk/samsung/clk-s3c64xx.c create mode 100644 include/dt-bindings/clock/samsung,s3c64xx-clock.h Changes since v2: - Reworked to use new PLL registration method introduced by Yadwinder Singh Brar's patch series: ( http://thread.gmane.org/gmane.linux.kernel.samsung-soc/20041 ) diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt b/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt new file mode 100644 index 0000000..fa171dc --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt @@ -0,0 +1,77 @@ +* Samsung S3C64xx Clock Controller + +The S3C64xx clock controller generates and supplies clock to various controllers +within the SoC. The clock binding described here is applicable to all SoCs in +the S3C64xx family. + +Required Properties: + +- compatible: should be one of the following. + - "samsung,s3c6400-clock" - controller compatible with S3C6400 SoC. + - "samsung,s3c6410-clock" - controller compatible with S3C6410 SoC. + +- reg: physical base address of the controller and length of memory mapped + region. + +- #clock-cells: should be 1. + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. Some of the clocks are available only +on a particular S3C64xx SoC and this is specified where applicable. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/samsung,s3c64xx-clock.h header and can be used in device +tree sources. + +External clocks: + +There are several clocks that are generated outside the SoC. It is expected +that they are defined using standard clock bindings with following +clock-output-names: + - "fin_pll" - PLL input clock (xtal/extclk) - required, + - "xusbxti" - USB xtal - required, + - "iiscdclk0" - I2S0 codec clock - optional, + - "iiscdclk1" - I2S1 codec clock - optional, + - "iiscdclk2" - I2S2 codec clock - optional, + - "pcmcdclk0" - PCM0 codec clock - optional, + - "pcmcdclk1" - PCM1 codec clock - optional, only S3C6410. + +Example: Clock controller node: + + clock: clock-controller@7e00f000 { + compatible = "samsung,s3c6410-clock"; + reg = <0x7e00f000 0x1000>; + #clock-cells = <1>; + }; + +Example: Required external clocks: + + fin_pll: clock-fin-pll { + compatible = "fixed-clock"; + clock-output-names = "fin_pll"; + clock-frequency = <12000000>; + #clock-cells = <0>; + }; + + xusbxti: clock-xusbxti { + compatible = "fixed-clock"; + clock-output-names = "xusbxti"; + clock-frequency = <48000000>; + #clock-cells = <0>; + }; + +Example: UART controller node that consumes the clock generated by the clock + controller (refer to the standard clock bindings for information about + "clocks" and "clock-names" properties): + + uart0: serial@7f005000 { + compatible = "samsung,s3c6400-uart"; + reg = <0x7f005000 0x100>; + interrupt-parent = <&vic1>; + interrupts = <5>; + clock-names = "uart", "clk_uart_baud2", + "clk_uart_baud3"; + clocks = <&clock PCLK_UART0>, <&clocks PCLK_UART0>, + <&clock SCLK_UART>; + status = "disabled"; + }; diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile index 5d4d432..3413380 100644 --- a/drivers/clk/samsung/Makefile +++ b/drivers/clk/samsung/Makefile @@ -8,3 +8,6 @@ obj-$(CONFIG_SOC_EXYNOS5250) += clk-exynos5250.o obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5420.o obj-$(CONFIG_SOC_EXYNOS5440) += clk-exynos5440.o obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-audss.o +ifdef CONFIG_COMMON_CLK +obj-$(CONFIG_ARCH_S3C64XX) += clk-s3c64xx.o +endif diff --git a/drivers/clk/samsung/clk-s3c64xx.c b/drivers/clk/samsung/clk-s3c64xx.c new file mode 100644 index 0000000..eeda567 --- /dev/null +++ b/drivers/clk/samsung/clk-s3c64xx.c @@ -0,0 +1,473 @@ +/* + * 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 <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, +}; + +/* + * List of controller registers to be saved and restored during + * a suspend/resume cycle. + */ +static __initdata unsigned long s3c64xx_clk_regs[] = { + 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 __initdata unsigned long s3c6410_clk_regs[] = { + CLK_SRC2, + MEM0_GATE, +}; + +/* 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, NULL, "dma1"), + ALIAS(HCLK_DMA0, NULL, "dma0"), + 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(SCLK_SPI1, "s3c6410-spi.1", "spi-bus"), + ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi-bus"), + 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(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(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 is_s3c6400, + void __iomem *reg_base) +{ + unsigned long *soc_regs = NULL; + unsigned long nr_soc_regs = 0; + + if (np) { + reg_base = of_iomap(np, 0); + if (!reg_base) + panic("%s: failed to map registers\n", __func__); + } + + if (!is_s3c6400) { + soc_regs = s3c6410_clk_regs; + nr_soc_regs = ARRAY_SIZE(s3c6410_clk_regs); + } + + samsung_clk_init(np, reg_base, NR_CLKS, s3c64xx_clk_regs, + ARRAY_SIZE(s3c64xx_clk_regs), soc_regs, nr_soc_regs); + + /* Register external clocks. */ + if (!np) + s3c64xx_clk_register_fixed_ext(xtal_f, xusbxti_f); + + /* Register PLLs. */ + samsung_clk_register_pll(s3c64xx_pll_clks, + ARRAY_SIZE(s3c64xx_pll_clks), reg_base); + + /* Register common internal clocks. */ + samsung_clk_register_fixed_rate(s3c64xx_fixed_rate_clks, + ARRAY_SIZE(s3c64xx_fixed_rate_clks)); + samsung_clk_register_mux(s3c64xx_mux_clks, + ARRAY_SIZE(s3c64xx_mux_clks)); + samsung_clk_register_div(s3c64xx_div_clks, + ARRAY_SIZE(s3c64xx_div_clks)); + samsung_clk_register_gate(s3c64xx_gate_clks, + ARRAY_SIZE(s3c64xx_gate_clks)); + + /* Register SoC-specific clocks. */ + if (is_s3c6400) { + samsung_clk_register_mux(s3c6400_mux_clks, + ARRAY_SIZE(s3c6400_mux_clks)); + samsung_clk_register_div(s3c6400_div_clks, + ARRAY_SIZE(s3c6400_div_clks)); + samsung_clk_register_gate(s3c6400_gate_clks, + ARRAY_SIZE(s3c6400_gate_clks)); + samsung_clk_register_alias(s3c6400_clock_aliases, + ARRAY_SIZE(s3c6400_clock_aliases)); + } else { + samsung_clk_register_mux(s3c6410_mux_clks, + ARRAY_SIZE(s3c6410_mux_clks)); + samsung_clk_register_div(s3c6410_div_clks, + ARRAY_SIZE(s3c6410_div_clks)); + samsung_clk_register_gate(s3c6410_gate_clks, + ARRAY_SIZE(s3c6410_gate_clks)); + samsung_clk_register_alias(s3c6410_clock_aliases, + ARRAY_SIZE(s3c6410_clock_aliases)); + } + + samsung_clk_register_alias(s3c64xx_clock_aliases, + ARRAY_SIZE(s3c64xx_clock_aliases)); + + 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); diff --git a/include/dt-bindings/clock/samsung,s3c64xx-clock.h b/include/dt-bindings/clock/samsung,s3c64xx-clock.h new file mode 100644 index 0000000..ad95c7f --- /dev/null +++ b/include/dt-bindings/clock/samsung,s3c64xx-clock.h @@ -0,0 +1,178 @@ +/* + * 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. + * + * Device Tree binding constants for Samsung S3C64xx clock controller. +*/ + +#ifndef _DT_BINDINGS_CLOCK_SAMSUNG_S3C64XX_CLOCK_H +#define _DT_BINDINGS_CLOCK_SAMSUNG_S3C64XX_CLOCK_H + +/* + * Let each exported clock get a unique index, which is used on DT-enabled + * platforms to lookup the clock from a clock specifier. These indices are + * therefore considered an ABI and so must not be changed. This implies + * that new clocks should be added either in free spaces between clock groups + * or at the end. + */ + +/* Core clocks. */ +#define CLK27M 1 +#define CLK48M 2 +#define FOUT_APLL 3 +#define FOUT_MPLL 4 +#define FOUT_EPLL 5 +#define ARMCLK 6 +#define HCLKX2 7 +#define HCLK 8 +#define PCLK 9 + +/* HCLK bus clocks. */ +#define HCLK_3DSE 16 +#define HCLK_UHOST 17 +#define HCLK_SECUR 18 +#define HCLK_SDMA1 19 +#define HCLK_SDMA0 20 +#define HCLK_IROM 21 +#define HCLK_DDR1 22 +#define HCLK_MEM1 23 +#define HCLK_MEM0 24 +#define HCLK_USB 25 +#define HCLK_HSMMC2 26 +#define HCLK_HSMMC1 27 +#define HCLK_HSMMC0 28 +#define HCLK_MDP 29 +#define HCLK_DHOST 30 +#define HCLK_IHOST 31 +#define HCLK_DMA1 32 +#define HCLK_DMA0 33 +#define HCLK_JPEG 34 +#define HCLK_CAMIF 35 +#define HCLK_SCALER 36 +#define HCLK_2D 37 +#define HCLK_TV 38 +#define HCLK_POST0 39 +#define HCLK_ROT 40 +#define HCLK_LCD 41 +#define HCLK_TZIC 42 +#define HCLK_INTC 43 +#define HCLK_MFC 44 +#define HCLK_DDR0 45 + +/* PCLK bus clocks. */ +#define PCLK_IIC1 48 +#define PCLK_IIS2 49 +#define PCLK_SKEY 50 +#define PCLK_CHIPID 51 +#define PCLK_SPI1 52 +#define PCLK_SPI0 53 +#define PCLK_HSIRX 54 +#define PCLK_HSITX 55 +#define PCLK_GPIO 56 +#define PCLK_IIC0 57 +#define PCLK_IIS1 58 +#define PCLK_IIS0 59 +#define PCLK_AC97 60 +#define PCLK_TZPC 61 +#define PCLK_TSADC 62 +#define PCLK_KEYPAD 63 +#define PCLK_IRDA 64 +#define PCLK_PCM1 65 +#define PCLK_PCM0 66 +#define PCLK_PWM 67 +#define PCLK_RTC 68 +#define PCLK_WDT 69 +#define PCLK_UART3 70 +#define PCLK_UART2 71 +#define PCLK_UART1 72 +#define PCLK_UART0 73 +#define PCLK_MFC 74 + +/* Special clocks. */ +#define SCLK_UHOST 80 +#define SCLK_MMC2_48 81 +#define SCLK_MMC1_48 82 +#define SCLK_MMC0_48 83 +#define SCLK_MMC2 84 +#define SCLK_MMC1 85 +#define SCLK_MMC0 86 +#define SCLK_SPI1_48 87 +#define SCLK_SPI0_48 88 +#define SCLK_SPI1 89 +#define SCLK_SPI0 90 +#define SCLK_DAC27 91 +#define SCLK_TV27 92 +#define SCLK_SCALER27 93 +#define SCLK_SCALER 94 +#define SCLK_LCD27 95 +#define SCLK_LCD 96 +#define SCLK_FIMC 97 +#define SCLK_POST0_27 98 +#define SCLK_AUDIO2 99 +#define SCLK_POST0 100 +#define SCLK_AUDIO1 101 +#define SCLK_AUDIO0 102 +#define SCLK_SECUR 103 +#define SCLK_IRDA 104 +#define SCLK_UART 105 +#define SCLK_MFC 106 +#define SCLK_CAM 107 +#define SCLK_JPEG 108 +#define SCLK_ONENAND 109 + +/* MEM0 bus clocks - S3C6410-specific. */ +#define MEM0_CFCON 112 +#define MEM0_ONENAND1 113 +#define MEM0_ONENAND0 114 +#define MEM0_NFCON 115 +#define MEM0_SROM 116 + +/* Muxes. */ +#define MOUT_APLL 128 +#define MOUT_MPLL 129 +#define MOUT_EPLL 130 +#define MOUT_MFC 131 +#define MOUT_AUDIO0 132 +#define MOUT_AUDIO1 133 +#define MOUT_UART 134 +#define MOUT_SPI0 135 +#define MOUT_SPI1 136 +#define MOUT_MMC0 137 +#define MOUT_MMC1 138 +#define MOUT_MMC2 139 +#define MOUT_UHOST 140 +#define MOUT_IRDA 141 +#define MOUT_LCD 142 +#define MOUT_SCALER 143 +#define MOUT_DAC27 144 +#define MOUT_TV27 145 +#define MOUT_AUDIO2 146 + +/* Dividers. */ +#define DOUT_MPLL 160 +#define DOUT_SECUR 161 +#define DOUT_CAM 162 +#define DOUT_JPEG 163 +#define DOUT_MFC 164 +#define DOUT_MMC0 165 +#define DOUT_MMC1 166 +#define DOUT_MMC2 167 +#define DOUT_LCD 168 +#define DOUT_SCALER 169 +#define DOUT_UHOST 170 +#define DOUT_SPI0 171 +#define DOUT_SPI1 172 +#define DOUT_AUDIO0 173 +#define DOUT_AUDIO1 174 +#define DOUT_UART 175 +#define DOUT_IRDA 176 +#define DOUT_FIMC 177 +#define DOUT_AUDIO2 178 + +/* Total number of clocks. */ +#define NR_CLKS (DOUT_AUDIO2 + 1) + +#endif /* _DT_BINDINGS_CLOCK_SAMSUNG_S3C64XX_CLOCK_H */ -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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