This patch adds new, Common Clock Framework-based clock driver for Samsung S5PC100 SoCs. The driver is just added. Signed-off-by: Mateusz Krawczuk <m.krawczuk@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> --- .../bindings/clock/samsung,s5pc100-clock.txt | 72 +++ drivers/clk/samsung/Makefile | 1 + drivers/clk/samsung/clk-s5pc100.c | 695 +++++++++++++++++++++ include/dt-bindings/clock/samsung,s5pc100-clock.h | 202 ++++++ 4 files changed, 970 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,s5pc100-clock.txt create mode 100644 drivers/clk/samsung/clk-s5pc100.c create mode 100644 include/dt-bindings/clock/samsung,s5pc100-clock.h diff --git a/Documentation/devicetree/bindings/clock/samsung,s5pc100-clock.txt b/Documentation/devicetree/bindings/clock/samsung,s5pc100-clock.txt new file mode 100644 index 0000000..d026595 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,s5pc100-clock.txt @@ -0,0 +1,72 @@ +* Samsung S5PC100 Clock Controller + +The S5PC100 clock controller generates and supplies clock to various controllers +within the SoC. The clock binding described here is applicable to all SoCs in +the S5PC100 family. + +Required Properties: + +- compatible: should be one of the following. + - "samsung,s5pc100-clock" - controller compatible with S5PC100 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 S5PC100 SoC and this is specified where applicable. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/samsung,s5pc100-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: + - "xxti" - xtal - required + - "xusbxti" - USB xtal - required, + + +Example: Clock controller node: + + clock: clock-controller@7e00f000 { + compatible = "samsung,s5pc100-clock"; + reg = <0x7e00f000 0x1000>; + #clock-cells = <1>; + }; + +Example: Required external clocks: + + fin_pll: clock-xxti { + compatible = "fixed-clock"; + clock-output-names = "xxti"; + 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@ec000000 { + compatible = "samsung,s5pc100-uart"; + reg = <0xec000000 0x100>; + interrupt-parent = <&vic1>; + interrupts = <5>; + clock-names = "uart", "clk_uart_baud2", + "clk_uart_baud3"; + clocks = <&clock UART0>, <&clocks UART0>, + <&clock SCLK_UART>; + status = "disabled"; + }; \ No newline at end of file diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile index e08c45e..2db3459 100644 --- a/drivers/clk/samsung/Makefile +++ b/drivers/clk/samsung/Makefile @@ -11,4 +11,5 @@ obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-audss.o obj-$(CONFIG_ARCH_S3C64XX) += clk-s3c64xx.o ifeq ($(CONFIG_COMMON_CLK), y) obj-$(CONFIG_ARCH_S5PV210) += clk-s5pv210.o +obj-$(CONFIG_ARCH_S5PC100) += clk-s5pc100.o endif \ No newline at end of file diff --git a/drivers/clk/samsung/clk-s5pc100.c b/drivers/clk/samsung/clk-s5pc100.c new file mode 100644 index 0000000..c85414a --- /dev/null +++ b/drivers/clk/samsung/clk-s5pc100.c @@ -0,0 +1,695 @@ +/* + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * Author: Mateusz Krawczuk <m.krawczuk@xxxxxxxxxxxxxxxxxxx> + * + * 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 S5PC100 SoCs. +*/ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <mach/regs-clock.h> + +#include "clk.h" +#include "clk-pll.h" + +#include <dt-bindings/clock/samsung,s5pc100-clock.h> + +/* S5PC100 clock controller register offsets */ +#define APLL_LOCK 0x0000 +#define MPLL_LOCK 0x0004 +#define EPLL_LOCK 0x0008 +#define HPLL_LOCK 0x000c +#define APLL_CON 0x0100 +#define MPLL_CON 0x0104 +#define EPLL_CON 0x0108 +#define HPLL_CON 0x010c +#define CLK_SRC0 0x0200 +#define CLK_SRC1 0x0204 +#define CLK_SRC2 0x0208 +#define CLK_SRC3 0x020c +#define CLK_DIV0 0x0300 +#define CLK_DIV1 0x0304 +#define CLK_DIV2 0x0308 +#define CLK_DIV3 0x030c +#define CLK_DIV4 0x0310 +#define CLK_OUT 0x0400 +#define CLK_GATE_D0_0 0x0500 +#define CLK_GATE_D0_1 0x0504 +#define CLK_GATE_D0_2 0x0508 +#define CLK_GATE_D1_0 0x0520 +#define CLK_GATE_D1_1 0x0524 +#define CLK_GATE_D1_2 0x0528 +#define CLK_GATE_D1_3 0x052c +#define CLK_GATE_D1_4 0x0530 +#define CLK_GATE_D1_5 0x0534 +#define CLK_GATE_D2_0 0x0540 +#define CLK_GATE_SCLK_0 0x0560 +#define CLK_GATE_SCLK_1 0x0564 +#define SWRESET 0x0000 +#define ONENAND_SWRESET 0x0008 +#define GENERAL_CTRL 0x0100 +#define GENERAL_STATUS 0x0104 +#define CAM_MUX_SEL 0x0300 +#define MIXER_OUT_SEL 0x0304 +#define LPMP3_MODE_SEL 0x0308 +#define MIPI_PHY_CON0 0x0400 +#define MIPI_PHY_CON1 0x0414 +#define HDMI_PHY_CON0 0x0420 + +/* 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 S5PC100. */ +#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) + +enum s5pc100_plls { + apll, mpll, epll, hpll, +}; + +static unsigned long s5pc100_clk_regs[] __initdata = { + CLK_SRC0, + CLK_SRC1, + CLK_SRC2, + CLK_SRC3, + CLK_DIV0, + CLK_DIV1, + CLK_DIV2, + CLK_DIV3, + CLK_DIV4, + CLK_OUT, + CLK_GATE_D0_0, + CLK_GATE_D0_1, + CLK_GATE_D0_2, + CLK_GATE_D1_0, + CLK_GATE_D1_1, + CLK_GATE_D1_2, + CLK_GATE_D1_3, + CLK_GATE_D1_4, + CLK_GATE_D1_5, + CLK_GATE_D2_0, + CLK_GATE_SCLK_0, + CLK_GATE_SCLK_1, + APLL_CON, + MPLL_CON, + EPLL_CON, + HPLL_CON, +}; + +/* List of parent clocks common for all S5PC100 SoCs. */ +PNAME(mout_apll_p) = { + "fin_pll", + "fout_apll" +}; + +PNAME(mout_mpll_p) = { + "fin_pll", + "fout_mpll" +}; + +PNAME(mout_epll_p) = { + "fin_pll", + "fout_epll" +}; + +PNAME(mout_href_p) = { + "clk27m", + "fin_pll" +}; + +PNAME(mout_hpll_p) = { + "clk27m", + "fout_hpll" +}; + +PNAME(mout_am_p) = { + "mout_mpll", + "dout_apll2", +}; + +PNAME(mout_mixer_p) = { + "clk27m", + "vclk54", + "mout_hpll", + "none" +}; + +PNAME(mout_spi_p) = { + "fin_pll", + "dout_mpll2", + "mout_epll", + "mout_hpll" +}; + +PNAME(mout_uart_p) = { + "mout_epll", + "dout_mpll" +}; + +PNAME(mout_audio0_p) = { + "mout_epll", + "dout_mpll", + "fin_pll", + "i2scdclk0", + "pcmcdclk0", + "mout_hpll", + "none", + "none" +}; + +PNAME(mout_audio1_p) = { + "mout_epll", + "dout_mpll", + "fin_pll", + "i2scdclk1", + "pcmcdclk1", + "mout_hpll", + "none", + "none" +}; + +PNAME(mout_audio2_p) = { + "mout_epll", + "dout_mpll", + "fin_pll", + "i2scdclk2", + "mout_hpll", + "none", + "none", + "none" +}; + +PNAME(mout_spdif_p) = { + "dout_audio0", + "dout_audio1", + "dout_audio3", + "none" +}; + +PNAME(mout_fimc_p) = { + "mout_epll", + "dout_mpll", + "mout_hpll", + "vclk54" +}; + +PNAME(mout_mmc_p) = { + "mout_epll", + "dout_mpll", + "fin_pll", + "mout_hpll" +}; + +PNAME(mout_mmc0_p) = { + "mout_epll", + "dout_mpll", + "fin_pll", + "none" +}; + + +PNAME(mout_irda_p) = { + "mout_epll", + "dout_mpll", + "mout_hpll", + "none" +}; + +PNAME(mout_pwi_p) = { + "mout_hpll", + "dout_mpll", + "mout_epll", + "none" +}; + +PNAME(mout_uhost_p) = { + "mout_epll", + "dout_mpll", + "mout_hpll", + "clk48m" +}; + +PNAME(mout_onenand_p) = { + "dout_d1_bus", + "dout_d0_bus" +}; + +PNAME(mout_hclk_2_p) = { + "fout_epll", + "i2scdclk0" +}; + +PNAME(mout_i2s_2_p) = { + "fout_epll", + "i2scdclk0", + "dout_audio0", + "none" +}; + +MUX_CLOCKS(s5pc100_mux_clks) __initdata = { + MUX(MOUT_ONENAND, "mout_onenand", mout_onenand_p, CLK_SRC0, 24, 1), + MUX(MOUT_HREF, "mout_href", mout_href_p, CLK_SRC0, 20, 1), + MUX(MOUT_AM, "mout_am", mout_am_p, CLK_SRC0, 16, 1), + MUX(MOUT_HPLL, "mout_hpll", mout_hpll_p, CLK_SRC0, 12, 1), + MUX(MOUT_EPLL, "mout_epll", mout_epll_p, CLK_SRC0, 8, 1), + MUX(MOUT_MPLL, "mout_mpll", mout_mpll_p, CLK_SRC0, 4, 1), + MUX(MOUT_APLL, "mout_apll", mout_apll_p, CLK_SRC0, 0, 1), + + MUX(MOUT_UHOST, "mout_uhost", mout_uhost_p, CLK_SRC1, 20, 2), + MUX(MOUT_IRDA, "mout_irda", mout_irda_p, CLK_SRC1, 16, 2), + MUX(MOUT_SPI2, "mout_spi2", mout_spi_p, CLK_SRC1, 12, 2), + MUX(MOUT_SPI1, "mout_spi1", mout_spi_p, CLK_SRC1, 8, 2), + MUX(MOUT_SPI0, "mout_spi0", mout_spi_p, CLK_SRC1, 4, 2), + MUX(MOUT_UART, "mout_uart", mout_uart_p, CLK_SRC1, 0, 2), + + MUX(MOUT_MIXER, "mout_mixer", mout_mixer_p, CLK_SRC2, 28, 2), + MUX(MOUT_FIMC2, "mout_fimc2", mout_fimc_p, CLK_SRC2, 24, 2), + MUX(MOUT_FIMC1, "mout_fimc1", mout_fimc_p, CLK_SRC2, 20, 2), + MUX(MOUT_FIMC0, "mout_fimc0", mout_fimc_p, CLK_SRC2, 16, 2), + MUX(MOUT_LCD, "mout_lcd", mout_fimc_p, CLK_SRC2, 12, 2), + MUX(MOUT_MMC2, "mout_mmc2", mout_mmc_p, CLK_SRC2, 8, 4), + MUX(MOUT_MMC1, "mout_mmc1", mout_mmc_p, CLK_SRC2, 4, 4), + MUX(MOUT_MMC0, "mout_mmc0", mout_mmc0_p, CLK_SRC2, 0, 4), + + MUX(MOUT_SPDIF, "mout_spdif", mout_spdif_p, CLK_SRC3, 24, 2), + MUX(MOUT_AUDIO2, "mout_audio2", mout_audio2_p, CLK_SRC3, 20, 3), + MUX(MOUT_AUDIO1, "mout_audio1", mout_audio1_p, CLK_SRC3, 16, 3), + MUX(MOUT_AUDIO0, "mout_audio0", mout_audio0_p, CLK_SRC3, 12, 3), + MUX(MOUT_I2S_2, "mout_i2s_2", mout_i2s_2_p, CLK_SRC3, 8, 2), + MUX(MOUT_HCLK_D2, "mout_hclk_2", mout_hclk_2_p, CLK_SRC3, 4, 1), + MUX(MOUT_PWI, "mout_pwi", mout_pwi_p, CLK_SRC3, 0, 2), +}; + +/* register s5pc100 clocks */ +/* Fixed rate clocks generated outside the soc */ +FIXED_RATE_CLOCKS(s5pc100_fixed_rate_ext_clks) __initdata = { + FRATE(0, "xxti", NULL, CLK_IS_ROOT, 0), + FRATE(0, "xusbxti", NULL, CLK_IS_ROOT, 0), +}; + +/* Fixed rate clocks generated inside the soc */ +FIXED_RATE_CLOCKS(s5pc100_fixed_rate_clks) __initdata = { + FRATE(0, "clk27m", NULL, CLK_IS_ROOT, 27000000), + FRATE(0, "clk48m", NULL, CLK_IS_ROOT, 48000000), +}; + +/* list of divider clocks supported in all s5pc100 soc's */ +DIV_CLOCKS(s5pc100_div_clks) __initdata = { + DIV(DOUT_SECSS, "dout_secss", "dout_d0_bus", CLK_DIV0, 16, 3), + DIV(DOUT_PCLK0, "dout_pclk0", "dout_d0_bus", CLK_DIV0, 12, 3), + DIV(DOUT_D0_BUS, "dout_d0_bus", "dout_arm", CLK_DIV0, 8, 3), + DIV(DOUT_ARM, "dout_arm", "dout_apll", CLK_DIV0, 4, 3), + DIV(DOUT_APLL, "dout_apll", "mout_apll", CLK_DIV0, 0, 1), + + DIV(DOUT_CAM, "dout_cam", "dout_mpll2", CLK_DIV1, 24, 5), + DIV(DOUT_ONENAND, "dout_onenand", "mout_onenand", CLK_DIV1, 20, 2), + DIV(DOUT_PCLK1, "dout_pclk1", "dout_d1_bus", CLK_DIV1, 16, 3), + DIV(DOUT_D1_BUS, "dout_d1_bus", "mout_am", CLK_DIV1, 12, 3), + DIV(DOUT_MPLL2, "dout_mpll2", "mout_am", CLK_DIV1, 8, 1), + DIV(DOUT_MPLL, "dout_mpll", "mout_am", CLK_DIV1, 4, 2), + DIV(DOUT_APLL2, "dout_apll2", "mout_apll", CLK_DIV1, 0, 3), + + DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV2, 20, 4), + DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 16, 4), + DIV(DOUT_SPI2, "dout_spi2", "mout_spi2", CLK_DIV2, 12, 4), + DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 8, 4), + DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 4, 4), + DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 0, 4), + + DIV(DOUT_HDMI, "dout_hdmi", "mout_hpll", CLK_DIV3, 28, 4), + DIV(DOUT_FIMC2, "dout_fimc2", "mout_fimc2", CLK_DIV3, 24, 4), + DIV(DOUT_FIMC1, "dout_fimc1", "mout_fimc1", CLK_DIV3, 20, 4), + DIV(DOUT_FIMC0, "dout_fimc0", "mout_fimc0", CLK_DIV3, 16, 4), + DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV3, 12, 4), + DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV3, 8, 4), + DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV3, 4, 4), + DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV3, 0, 4), + + DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV4, 20, 4), + DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV4, 16, 4), + DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV4, 12, 4), + DIV(DOUT_I2S_2, "dout_i2s_2", "mout_i2s_2", CLK_DIV4, 8, 4), + DIV(DOUT_HCLK_2, "dout_hclk_2", "mout_hclk_2", CLK_DIV4, 4, 3), + DIV(DOUT_PWI, "dout_pwi", "mout_pwi", CLK_DIV4, 0, 3), +}; + +/*TODO list of gate clocks supported in all s5pc100 soc's */ +struct samsung_gate_clock s5pc100_gate_clks[] __initdata = { + + GATE(CSSYS, "cssys", "dout_d0_bus", CLK_GATE_D0_0, 6, 0, 0), + GATE(SECSS, "secss", "dout_d0_bus", CLK_GATE_D0_0, 5, 0, 0), + GATE(G2D, "g2d", "dout_d0_bus", CLK_GATE_D0_0, 4, 0, 0), + GATE(MDMA, "mdma", "dout_d0_bus", CLK_GATE_D0_0, 3, 0, 0), + GATE(CFCON, "cfcon", "dout_d0_bus", CLK_GATE_D0_0, 2, 0, 0), + GATE(TZIC, "tzic", "dout_d0_bus", CLK_GATE_D0_0, 1, 0, 0), + + GATE(EBI, "ebi", "dout_d0_bus", CLK_GATE_D0_1, 5, 0, 0), + GATE(INTMEM, "intmem", "dout_d0_bus", CLK_GATE_D0_1, 4, 0, 0), + GATE(NFCON, "nfcon", "dout_d0_bus", CLK_GATE_D0_1, 3, 0, 0), + GATE(ONENAND, "onenand", "dout_d0_bus", CLK_GATE_D0_1, 2, 0, 0), + GATE(SROMC, "sromc", "dout_d0_bus", CLK_GATE_D0_1, 1, 0, 0), + + GATE(SDM, "sdm", "dout_d0_bus", CLK_GATE_D1_0, 2, 0, 0), + GATE(SECKEY, "seckey", "dout_pclk0", CLK_GATE_D1_0, 1, 0, 0), + + GATE(HSMMC2, "hsmmc2", "dout_d1_bus", CLK_GATE_D1_0, 7, 0, 0), + GATE(HSMMC1, "hsmmc1", "dout_d1_bus", CLK_GATE_D1_0, 6, 0, 0), + GATE(HSMMC0, "hsmmc0", "dout_d1_bus", CLK_GATE_D1_0, 5, 0, 0), + GATE(MODEMIF, "modemif", "dout_d1_bus", CLK_GATE_D1_0, 4, 0, 0), + GATE_A(USB_OTG, "usb_otg", "dout_d1_bus", + CLK_GATE_D1_0, 3, 0, 0, "usbotg"), + GATE_A(USB_HOST, "usb_host", "dout_d1_bus", + CLK_GATE_D1_0, 2, 0, 0, "usbhost"), + GATE(PDMA1, "pdma1", "dout_d1_bus", CLK_GATE_D1_0, 1, 0, 0), + GATE(PDMA0, "pdma0", "dout_d1_bus", CLK_GATE_D1_0, 0, 0, 0), + + GATE(G3D, "g3d", "dout_d1_bus", CLK_GATE_D1_1, 8, 0, 0), + GATE(CSI, "csi", "dout_d1_bus", CLK_GATE_D1_1, 7, 0, 0), + GATE(DSIM, "dsi", "dout_pclk1", CLK_GATE_D1_1, 6, 0, 0), + GATE(JPEG, "jpeg", "dout_d1_bus", CLK_GATE_D1_1, 5, 0, 0), + GATE(FIMC2, "fimc2", "dout_d1_bus", CLK_GATE_D1_1, 4, 0, 0), + GATE(FIMC1, "fimc1", "dout_d1_bus", CLK_GATE_D1_1, 3, 0, 0), + GATE(FIMC0, "fimc0", "dout_d1_bus", CLK_GATE_D1_1, 2, 0, 0), + GATE(ROTATOR, "rotator", "dout_d1_bus", CLK_GATE_D1_1, 1, 0, 0), + GATE(LCDCON, "lcd", "dout_d1_bus", CLK_GATE_D1_1, 0, 0, 0), + + GATE(MFC, "mfc", "dout_d1_bus", CLK_GATE_D1_2, 4, 0, 0), + GATE(HDMI, "hdmi", "dout_d1_bus", CLK_GATE_D1_2, 3, 0, 0), + GATE(MIXER, "mixer", "dout_d1_bus", CLK_GATE_D1_2, 2, 0, 0), + GATE(VP, "vp", "dout_d1_bus", CLK_GATE_D1_2, 1, 0, 0), + GATE(TV, "tv", "dout_d1_bus", CLK_GATE_D1_2, 0, 0, 0), + + GATE(RTC, "rtc", "dout_d1_bus", CLK_GATE_D1_3, 9, 0, 0), + GATE(WDT, "watchdog", "dout_pclk1", CLK_GATE_D1_3, 8, 0, 0), + GATE(SYSTIMER, "systimer", "dout_d1_bus", CLK_GATE_D1_3, 7, 0, 0), + GATE(PWM, "pwm", "dout_pclk1", CLK_GATE_D1_3, 6, 0, 0), + GATE(IEC, "iec", "dout_d1_bus", CLK_GATE_D1_3, 3, 0, 0), + GATE(APC, "apc", "dout_d1_bus", CLK_GATE_D1_3, 2, 0, 0), + + GATE(HSIRX, "hsirx", "dout_d1_bus", CLK_GATE_D1_4, 13, 0, 0), + GATE(HSITX, "hsitx", "dout_d1_bus", CLK_GATE_D1_4, 12, 0, 0), + GATE(CCAN1, "ccan1", "dout_d1_bus", CLK_GATE_D1_4, 11, 0, 0), + GATE(CCAN0, "ccan0", "dout_d1_bus", CLK_GATE_D1_4, 10, 0, 0), + GATE(IRDA, "irda", "dout_d1_bus", CLK_GATE_D1_4, 9, 0, 0), + GATE(SPI2, "spi2", "dout_d1_bus", CLK_GATE_D1_4, 8, 0, 0), + GATE(SPI1, "spi1", "dout_d1_bus", CLK_GATE_D1_4, 7, 0, 0), + GATE(SPI0, "spi0", "dout_d1_bus", CLK_GATE_D1_4, 6, 0, 0), + GATE(I2C_HDMI, "i2c_hdmi", "dout_d1_bus", CLK_GATE_D1_4, 5, 0, 0), + GATE(I2C, "i2c", "dout_d1_bus", CLK_GATE_D1_4, 4, 0, 0), + + GATE(UART3, "uart3", "dout_pclk1", CLK_GATE_D1_4, 3, 0, 0), + GATE(UART2, "uart2", "dout_pclk1", CLK_GATE_D1_4, 2, 0, 0), + GATE(UART1, "uart1", "dout_pclk1", CLK_GATE_D1_4, 1, 0, 0), + GATE(UART0, "uart0", "dout_pclk1", CLK_GATE_D1_4, 0, 0, 0), + + GATE(KEYIF, "keyif", "dout_pclk1", CLK_GATE_D1_5, 8, 0, 0), + GATE(TSADC, "tsadc", "dout_pclk1", CLK_GATE_D1_5, 7, 0, 0), + GATE(SPDIF, "spdif", "dout_pclk1", CLK_GATE_D1_5, 6, 0, 0), + GATE(PCM1, "pcm1", "dout_pclk1", CLK_GATE_D1_5, 5, 0, 0), + GATE(PCM0, "pcm0", "dout_pclk1", CLK_GATE_D1_5, 4, 0, 0), + GATE(AC97, "ac97", "dout_pclk1", CLK_GATE_D1_5, 3, 0, 0), + GATE(I2S2, "i2s2", "dout_pclk1", CLK_GATE_D1_5, 2, 0, 0), + GATE(I2S1, "i2s1", "dout_pclk1", CLK_GATE_D1_5, 1, 0, 0), + GATE(I2S0, "i2s0", "dout_pclk1", CLK_GATE_D1_5, 4, 0, 0), + + GATE(I2S_2, "i2s_2", "dout_pclk2", CLK_GATE_D2_0, 1, 0, 0), + + GATE(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", + CLK_GATE_SCLK_0, 17, 0, 0), + GATE(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", + CLK_GATE_SCLK_0, 16, 0, 0), + GATE(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", + CLK_GATE_SCLK_0, 15, 0, 0), + GATE(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", CLK_GATE_SCLK_0, 14, 0, 0), + GATE(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", CLK_GATE_SCLK_0, 13, 0, 0), + GATE(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", CLK_GATE_SCLK_0, 12, 0, 0), + GATE(SCLK_USBHOST, "sclk_usbhost", "dout_uhost", + CLK_GATE_SCLK_0, 11, 0, 0), + GATE(SCLK_IRDA, "sclk_irda", "dout_irda", CLK_GATE_SCLK_0, 10, 0, 0), + GATE(SCLK_SPI2_48, "sclk_spi2_48", "clk48m", + CLK_GATE_SCLK_0, 9, 0, 0), + GATE(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", + CLK_GATE_SCLK_0, 8, 0, 0), + GATE(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", + CLK_GATE_SCLK_0, 7, 0, 0), + GATE(SCLK_SPI2, "sclk_spi2", "dout_spi2", CLK_GATE_SCLK_0, 6, 0, 0), + GATE(SCLK_SPI1, "sclk_spi1", "dout_spi1", CLK_GATE_SCLK_0, 5, 0, 0), + GATE(SCLK_SPI0, "sclk_spi0", "dout_spi0", CLK_GATE_SCLK_0, 4, 0, 0), + GATE(SCLK_UART, "sclk_uart", "dout_uart", CLK_GATE_SCLK_0, 3, 0, 0), + GATE(SCLK_ONENAND, "sclk_onenand", "dout_onenand", + CLK_GATE_SCLK_0, 2, 0, 0), + GATE(SCLK_PWI, "sclk_pwi", "dout_pwi", CLK_GATE_SCLK_0, 1, 0, 0), + GATE(SCLK_HPM, "sclk_hpm", "dout_d1_bus", CLK_GATE_SCLK_0, 0, 0, 0), + + GATE(SCLK_CAM, "sclk_cam", "dout_cam", CLK_GATE_SCLK_1, 12, 0, 0), + GATE(SCLK_SPDIF, "sclk_spdif", "mout_spdif", + CLK_GATE_SCLK_1, 11, 0, 0), + GATE(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", + CLK_GATE_SCLK_1, 10, 0, 0), + GATE(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", + CLK_GATE_SCLK_1, 9, 0, 0), + GATE(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", + CLK_GATE_SCLK_1, 8, 0, 0), + GATE(SCLK_HDMI, "sclk_hdmi", "dout_hdmi", CLK_GATE_SCLK_1, 7, 0, 0), + GATE(SCLK_MIXER, "sclk_mixer", "mout_mixer", + CLK_GATE_SCLK_1, 6, 0, 0), + GATE(SCLK_VDAC54, "sclk_vdac54", "vclk54", CLK_GATE_SCLK_1, 5, 0, 0), + GATE(SCLK_TV54, "sclk_tv54", "vclk54", CLK_GATE_SCLK_1, 4, 0, 0), + GATE(SCLK_FIMC2, "sclk_fimc2", "dout_fimc2", CLK_GATE_SCLK_1, 3, 0, 0), + GATE(SCLK_FIMC1, "sclk_fimc1", "dout_fimc1", CLK_GATE_SCLK_1, 2, 0, 0), + GATE(SCLK_FIMC0, "sclk_fimc0", "dout_fimc0", CLK_GATE_SCLK_1, 1, 0, 0), + GATE(SCLK_LCD, "sclk_lcd", "dout_lcd", CLK_GATE_SCLK_1, 0, 0, 0), +}; + +/* list of all parent clock list */ +static struct samsung_clock_alias s5pc100_clock_aliases[] = { + ALIAS(FIMC0, "s5pc100-fimc.0", "fimc"), + ALIAS(FIMC1, "s5pc100-fimc.1", "fimc"), + ALIAS(FIMC2, "s5pc100-fimc.2", "fimc"), + ALIAS(MOUT_FIMC2, NULL, "mout_fimc2"), + ALIAS(MOUT_FIMC1, NULL, "mout_fimc1"), + ALIAS(MOUT_FIMC0, NULL, "mout_fimc0"), + ALIAS(SCLK_FIMC0, "s5pc100-fimc.0", "sclk_fimc"), + ALIAS(SCLK_FIMC1, "s5pc100-fimc.1", "sclk_fimc"), + ALIAS(SCLK_FIMC2, "s5pc100-fimc.2", "sclk_fimc"), + + ALIAS(MOUT_APLL, NULL, "mout_apll"), + ALIAS(MOUT_MPLL, NULL, "mout_mpll"), + ALIAS(MOUT_EPLL, NULL, "mout_epll"), + ALIAS(MOUT_HPLL, NULL, "mout_hpll"), + ALIAS(MOUT_HPLL, NULL, "sclk_hpll"), + ALIAS(UART0, "s3c6400-uart.0", "uart"), + ALIAS(UART1, "s3c6400-uart.1", "uart"), + ALIAS(UART2, "s3c6400-uart.2", "uart"), + ALIAS(UART3, "s3c6400-uart.3", "uart"), + ALIAS(UART0, "s3c6400-uart.0", "clk_uart_baud0"), + ALIAS(UART1, "s3c6400-uart.1", "clk_uart_baud0"), + ALIAS(UART2, "s3c6400-uart.2", "clk_uart_baud0"), + ALIAS(UART3, "s3c6400-uart.3", "clk_uart_baud0"), + ALIAS(UART0, "s3c6400-uart.0", "clk_uart_baud2"), + ALIAS(UART1, "s3c6400-uart.1", "clk_uart_baud2"), + ALIAS(UART2, "s3c6400-uart.2", "clk_uart_baud2"), + ALIAS(UART3, "s3c6400-uart.3", "clk_uart_baud2"), + ALIAS(SCLK_UART, "s3c6400-uart.0", "clk_uart_baud3"), + ALIAS(SCLK_UART, "s3c6400-uart.1", "clk_uart_baud3"), + ALIAS(SCLK_UART, "s3c6400-uart.2", "clk_uart_baud3"), + ALIAS(SCLK_UART, "s3c6400-uart.3", "clk_uart_baud3"), + + ALIAS(HSMMC0, "s3c-sdhci.0", "hsmmc"), + ALIAS(HSMMC1, "s3c-sdhci.1", "hsmmc"), + ALIAS(HSMMC2, "s3c-sdhci.2", "hsmmc"), + ALIAS(HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"), + ALIAS(HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"), + ALIAS(HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"), + ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"), + ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"), + ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"), + ALIAS(SCLK_MMC0_48, "s3c-sdhci.0", "mmc_busclk.3"), + ALIAS(SCLK_MMC1_48, "s3c-sdhci.1", "mmc_busclk.3"), + ALIAS(SCLK_MMC2_48, "s3c-sdhci.2", "mmc_busclk.3"), + + ALIAS(SPI0, "s5pc100-spi.0", "spi"), + ALIAS(SPI1, "s5pc100-spi.1", "spi"), + ALIAS(SPI2, "s5pc100-spi.2", "spi"), + ALIAS(SPI0, "s5pc100-spi.0", "spi_busclk0"), + ALIAS(SPI1, "s5pc100-spi.1", "spi_busclk0"), + ALIAS(SPI2, "s5pc100-spi.2", "spi_busclk0"), + ALIAS(SCLK_SPI0_48, "s5pc100-spi.0", "spi_busclk1"), + ALIAS(SCLK_SPI1_48, "s5pc100-spi.1", "spi_busclk1"), + ALIAS(SCLK_SPI2_48, "s5pc100-spi.2", "spi_busclk1"), + ALIAS(SCLK_SPI0, "s5pc100-spi.0", "spi_busclk2"), + ALIAS(SCLK_SPI1, "s5pc100-spi.1", "spi_busclk2"), + ALIAS(SCLK_SPI2, "s5pc100-spi.2", "spi_busclk2"), + ALIAS(PDMA0, "dma-pl330.0", "apb_pclk"), + ALIAS(PDMA1, "dma-pl330.1", "apb_pclk"), + ALIAS(PWM, NULL, "timers"), + + ALIAS(JPEG, NULL, "jpeg"), + ALIAS(MFC, "s5p-mfc", "mfc"), + ALIAS(TV, "s5p-sdo", "dac"), + ALIAS(MIXER, "s5p-mixer", "mixer"), + ALIAS(VP, "s5p-mixer", "vp"), + ALIAS(HDMI, "s5p-hdmi", "hdmi"), + ALIAS(SCLK_HDMI, "s5p-hdmi", "hdmiphy"), + + ALIAS(USB_OTG, NULL, "otg"), + ALIAS(USB_HOST, NULL, "usb-host"), + ALIAS(USB_HOST, NULL, "usbhost"), + ALIAS(LCDCON, "s5pc100-fb", "lcd"), + ALIAS(CFCON, NULL, "cfcon"), + ALIAS(SYSTIMER, NULL, "systimer"), + ALIAS(WDT, NULL, "watchdog"), + ALIAS(RTC, NULL, "rtc"), + ALIAS(I2C, "s3c2440-i2c.0", "i2c"), + ALIAS(CCAN0, NULL, "ccan"), + ALIAS(CCAN1, NULL, "ccan"), + ALIAS(I2C_HDMI, "s3c2440-i2c.1", "i2c"), + ALIAS(HSITX, NULL, "hsitx"), + ALIAS(HSIRX, NULL, "hsirx"), + ALIAS(TSADC, NULL, "adc"), + ALIAS(KEYIF, "s5pc100-keypad", "keypad"), + ALIAS(I2S0, "samsung-i2s.0", "iis"), + ALIAS(I2S1, "samsung-i2s.1", "iis"), + ALIAS(I2S2, "samsung-i2s.2", "iis"), + ALIAS(SPDIF, NULL, "spdif"), + ALIAS(ROTATOR, NULL, "rot"), + ALIAS(DOUT_ARM, NULL, "armclk"), + ALIAS(SCLK_AUDIO0, "soc-audio.0", "sclk_audio"), + ALIAS(SCLK_AUDIO1, "soc-audio.1", "sclk_audio"), + ALIAS(SCLK_AUDIO2, "soc-audio.2", "sclk_audio"), + ALIAS(KEYIF, NULL, "keypad"), + + ALIAS(MFC, "s5p-mfc", "sclk_mfc"), + ALIAS(G2D, "s5p-g2d", "fimg2d"), + +}; + +static unsigned long s5pc100_get_xom(void) +{ + unsigned long xom = 0; + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "samsung,s5pc100-chipid"); + if (np) { + void __iomem *chipid_base = of_iomap(np, 0); + + if (!chipid_base) + panic("%s: failed to map chipid\n", __func__); + else { + xom = readl(chipid_base + 4); + iounmap(chipid_base); + } + } + + return xom; +} + +static void __init s5pc100_clk_register_finpll(unsigned long xom) +{ + struct samsung_fixed_rate_clock fclk; + struct clk *clk; + unsigned long finpll_f = 12000000; + char *parent_name; + + parent_name = xom & 1 ? "xusbxti" : "xxti"; + clk = clk_get(NULL, parent_name); + if (IS_ERR(clk)) + pr_err("%s: failed to lookup parent clock %s, assuming fin_pll clock frequency is 24MHz\n", + __func__, parent_name); + else + finpll_f = clk_get_rate(clk); + + fclk.id = FIN_PLL; + fclk.name = "fin_pll"; + fclk.parent_name = NULL; + fclk.flags = CLK_IS_ROOT; + fclk.fixed_rate = finpll_f; + samsung_clk_register_fixed_rate(&fclk, 1); + +} + +static void __init s5pc100_clk_register_fixed_ext(unsigned long xxti_f, + unsigned long xusbxti_f) +{ + s5pc100_fixed_rate_ext_clks[0].fixed_rate = xxti_f; + s5pc100_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f; + samsung_clk_register_fixed_rate(s5pc100_fixed_rate_ext_clks, + ARRAY_SIZE(s5pc100_fixed_rate_ext_clks)); +} + +static struct samsung_pll_clock s5pc100_pll_clks[] __initdata = { + [apll] = PLL(pll_6522x, FOUT_APLL, "fout_apll", "fin_pll", + APLL_LOCK, APLL_CON, NULL), + [mpll] = PLL(pll_6545a, FOUT_MPLL, "fout_mpll", "fin_pll", + MPLL_LOCK, MPLL_CON, NULL), + [epll] = PLL(pll_6545a, FOUT_EPLL, "fout_epll", "fin_pll", + EPLL_LOCK, EPLL_CON, NULL), + [hpll] = PLL(pll_6545a, FOUT_HPLL, "fout_hpll", "mout_href", + HPLL_LOCK, HPLL_CON, NULL), +}; + +void __init s5pc100_clk_init(struct device_node *np, unsigned long xxti_f, + unsigned long xusbxti_f, void __iomem *reg_base) +{ + unsigned long xom = s5pc100_get_xom(); + if (np) { + reg_base = of_iomap(np, 0); + if (!reg_base) + panic("%s: failed to map registers\n", __func__); + } + samsung_clk_init(np, reg_base, NR_CLKS, s5pc100_clk_regs, + ARRAY_SIZE(s5pc100_clk_regs), NULL, 0); + /* Register external clocks. */ + + if (!np) + s5pc100_clk_register_fixed_ext(xxti_f, xusbxti_f); + + s5pc100_clk_register_finpll(xom); + + /* Register PLLs. */ + samsung_clk_register_pll(s5pc100_pll_clks, + ARRAY_SIZE(s5pc100_pll_clks), reg_base); + + samsung_clk_register_fixed_rate(s5pc100_fixed_rate_clks, + ARRAY_SIZE(s5pc100_fixed_rate_clks)); + + samsung_clk_register_mux(s5pc100_mux_clks, + ARRAY_SIZE(s5pc100_mux_clks)); + + samsung_clk_register_div(s5pc100_div_clks, + ARRAY_SIZE(s5pc100_div_clks)); + + samsung_clk_register_gate(s5pc100_gate_clks, + ARRAY_SIZE(s5pc100_gate_clks)); + + samsung_clk_register_alias(s5pc100_clock_aliases, + ARRAY_SIZE(s5pc100_clock_aliases)); + + pr_info("S5PC100 clocks: mout_apll = %ld, mout_mpll = %ld\n" + "\tmout_epll = %ld, mout_hpll = %ld\n", + _get_rate("mout_apll"), _get_rate("mout_mpll"), + _get_rate("mout_epll"), _get_rate("mout_hpll")); +} +static void __init s5pc100_clk_dt_init(struct device_node *np) +{ + s5pc100_clk_init(np, 0, 0, NULL); +} +CLK_OF_DECLARE(s5pc100_clk, "samsung,s5pc100-clock", s5pc100_clk_dt_init); diff --git a/include/dt-bindings/clock/samsung,s5pc100-clock.h b/include/dt-bindings/clock/samsung,s5pc100-clock.h new file mode 100644 index 0000000..360b9e7 --- /dev/null +++ b/include/dt-bindings/clock/samsung,s5pc100-clock.h @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * Author: Mateusz Krawczuk <m.krawczuk@xxxxxxxxxxxxxxxxxxx> + * + * 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 S5PC100 clock controller. +*/ + +#ifndef _DT_BINDINGS_CLOCK_SAMSUNG_S5PC100_CLOCK_H +#define _DT_BINDINGS_CLOCK_SAMSUNG_S5PC100_CLOCK_H + + + +/* Core clocks. */ +#define FIN_PLL 1 +#define FOUT_APLL 2 +#define FOUT_MPLL 3 +#define FOUT_EPLL 4 +#define FOUT_HPLL 5 + +#define MOUT_ONENAND 6 +#define MOUT_HREF 7 +#define MOUT_AM 8 +#define MOUT_HPLL 9 +#define MOUT_EPLL 10 +#define MOUT_MPLL 11 +#define MOUT_APLL 12 + +#define MOUT_48M 13 +#define MOUT_UHOST 14 +#define MOUT_IRDA 15 +#define MOUT_SPI2 15 +#define MOUT_SPI0 16 +#define MOUT_SPI1 17 +#define MOUT_UART 18 + +#define MOUT_MIXER 19 +#define MOUT_FIMC2 20 +#define MOUT_FIMC1 21 +#define MOUT_FIMC0 22 +#define MOUT_LCD 23 +#define MOUT_MMC2 24 +#define MOUT_MMC1 25 +#define MOUT_MMC0 26 + +#define MOUT_SPDIF 27 +#define MOUT_AUDIO2 28 +#define MOUT_AUDIO1 29 +#define MOUT_AUDIO0 30 +#define MOUT_I2S_2 31 +#define MOUT_HCLK_D2 32 +#define MOUT_PWI 33 + +#define DOUT_SECSS 34 +#define DOUT_PCLK0 35 +#define DOUT_D0_BUS 36 +#define DOUT_ARM 37 +#define DOUT_APLL 38 +#define DOUT_CAM 39 +#define DOUT_ONENAND 40 +#define DOUT_PCLK1 41 +#define DOUT_D1_BUS 42 +#define DOUT_MPLL2 43 +#define DOUT_MPLL 44 +#define DOUT_APLL2 45 +#define DOUT_UHOST 46 +#define DOUT_IRDA 47 +#define DOUT_SPI2 48 +#define DOUT_SPI1 49 +#define DOUT_SPI0 50 +#define DOUT_UART 51 +#define DOUT_HDMI 52 +#define DOUT_FIMC2 53 +#define DOUT_FIMC1 54 +#define DOUT_FIMC0 55 +#define DOUT_LCD 56 +#define DOUT_MMC2 57 +#define DOUT_MMC1 58 +#define DOUT_MMC0 59 +#define DOUT_AUDIO2 60 +#define DOUT_AUDIO1 61 +#define DOUT_AUDIO0 62 +#define DOUT_I2S_2 63 +#define DOUT_HCLK_2 64 +#define DOUT_PWI 65 + +#define CSSYS 65 +#define SECSS 66 +#define G2D 67 +#define MDMA 68 +#define CFCON 69 +#define TZIC 70 +#define INTC 71 +#define EBI 72 +#define INTMEM 73 +#define CSI 74 +#define NFCON 75 +#define ONENAND 76 +#define SROMC 77 +#define DMC 78 +#define SDM 79 +#define SECKEY 80 +#define HSMMC2 81 +#define HSMMC1 82 +#define HSMMC0 83 +#define MODEMIF 84 +#define USB_OTG 85 +#define USB_HOST 86 +#define PDMA1 87 +#define PDMA0 88 +#define G3D 89 +#define DSIM 90 +#define JPEG 91 +#define FIMC2 92 +#define FIMC1 93 +#define FIMC0 94 +#define ROTATOR 95 +#define LCDCON 96 +#define MFC 97 +#define HDMI 98 +#define MIXER 99 +#define VP 100 +#define TV 101 +#define RTC 102 +#define WDT 103 +#define SYSTIMER 104 +#define PWM 105 +#define IEC 106 +#define APC 107 +#define GPIO 108 +#define CHIPID 109 +#define HSIRX 110 +#define HSITX 111 +#define CCAN1 112 +#define CCAN0 113 +#define IRDA 114 +#define SPI2 115 +#define SPI1 116 +#define SPI0 117 +#define I2C_2 118 +#define I2C_HDMI 119 +#define I2C 120 +#define UART3 121 +#define UART2 122 +#define UART1 123 +#define UART0 124 +#define KEYIF 125 +#define TSADC 126 +#define SPDIF 127 +#define PCM1 128 +#define PCM0 129 +#define AC97 130 +#define I2S2 131 +#define I2S1 132 +#define I2S0 133 +#define I2S_2 134 +#define HCLK_2 135 +#define TSI 136 +#define JTAG 137 +#define CORESIGHT 138 +/* Special clock */ +#define SCLK_MMC2_48 138 +#define SCLK_MMC1_48 139 +#define SCLK_MMC0_48 140 +#define SCLK_MMC2 141 +#define SCLK_MMC1 142 +#define SCLK_MMC0 143 +#define SCLK_USBHOST 144 +#define SCLK_IRDA 145 +#define SCLK_SPI2_48 146 +#define SCLK_SPI1_48 147 +#define SCLK_SPI0_48 148 +#define SCLK_SPI2 149 +#define SCLK_SPI1 150 +#define SCLK_SPI0 151 +#define SCLK_UART 152 +#define SCLK_ONENAND 153 +#define SCLK_PWI 154 +#define SCLK_HPM 155 + +#define SCLK_CAM 157 +#define SCLK_SPDIF 158 +#define SCLK_AUDIO2 159 +#define SCLK_AUDIO1 160 +#define SCLK_AUDIO0 161 +#define SCLK_HDMI 162 +#define SCLK_MIXER 163 +#define SCLK_VDAC54 164 +#define SCLK_TV54 165 +#define SCLK_FIMC2 166 +#define SCLK_FIMC1 167 +#define SCLK_FIMC0 168 +#define SCLK_LCD 169 +#define DACPHY 170 + +/* Total number of clocks. */ +#define NR_CLKS (DACPHY + 1) + +#endif /* _DT_BINDINGS_CLOCK_SAMSUNG_S5PC100_CLOCK_H */ -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html