clk: samsung: Add clock driver for S3C64xx SoCs

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@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt b/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt
new file mode 100644 (file)
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 5d4d432cc4acc1086fba972e9140b37a7c47c17b..3413380086d5b22f7e9a618231e33af9a1e37b1e 100644 (file)
--- 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 (file)
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 (file)
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 */