[PATCH v6] clk: samsung: exynos5433: Add binding document for Exynos5433 clock domains

From: Chanwoo Choi
Date: Mon Feb 02 2015 - 18:47:23 EST

This patch adds devicetree binding document for Exynos5433 SoC system clock
controller.

Cc: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Acked-by: Inki Dae <inki.dae@xxxxxxxxxxx>
---
.../devicetree/bindings/clock/exynos5433-clock.txt | 305 +++++++++++++++++++++
1 file changed, 305 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/exynos5433-clock.txt

diff --git a/Documentation/devicetree/bindings/clock/exynos5433-clock.txt b/Documentation/devicetree/bindings/clock/exynos5433-clock.txt
new file mode 100644
index 0000000..9e7ed2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/exynos5433-clock.txt
@@ -0,0 +1,305 @@
+* Samsung Exynos5433 CMU (Clock Management Units)
+
+The Exynos5433 clock controller generates and supplies clock to various
+controllers within the Exynos5433 SoC.
+
+Required Properties:
+
+- compatible: should be one of the following.
+ - "samsung,exynos5433-cmu-top" - clock controller compatible for CMU_TOP
+ which generates clocks for IMEM/FSYS/G3D/GSCL/HEVC/MSCL/G2D/MFC/PERIC/PERIS
+ domains and bus clocks.
+ - "samsung,exynos5433-cmu-cpif" - clock controller compatible for CMU_CPIF
+ which generates clocks for LLI (Low Latency Interface) IP.
+ - "samsung,exynos5433-cmu-mif" - clock controller compatible for CMU_MIF
+ which generates clocks for DRAM Memory Controller domain.
+ - "samsung,exynos5433-cmu-peric" - clock controller compatible for CMU_PERIC
+ which generates clocks for UART/I2C/SPI/I2S/PCM/SPDIF/PWM/SLIMBUS IPs.
+ - "samsung,exynos5433-cmu-peris" - clock controller compatible for CMU_PERIS
+ which generates clocks for PMU/TMU/MCT/WDT/RTC/SECKEY/TZPC IPs.
+ - "samsung,exynos5433-cmu-fsys" - clock controller compatible for CMU_FSYS
+ which generates clocks for USB/UFS/SDMMC/TSI/PDMA IPs.
+ - "samsung,exynos5433-cmu-g2d" - clock controller compatible for CMU_G2D
+ which generates clocks for G2D/MDMA IPs.
+ - "samsung,exynos5433-cmu-disp" - clock controller compatible for CMU_DISP
+ which generates clocks for Display (DECON/HDMI/DSIM/MIXER) IPs.
+ - "samsung,exynos5433-cmu-aud" - clock controller compatible for CMU_AUD
+ which generates clocks for Cortex-A5/BUS/AUDIO clocks.
+ - "samsung,exynos5433-cmu-bus0", "samsung,exynos5433-cmu-bus1"
+ and "samsung,exynos5433-cmu-bus2" - clock controller compatible for CMU_BUS
+ which generates global data buses clock and global peripheral buses clock.
+ - "samsung,exynos5433-cmu-g3d" - clock controller compatible for CMU_G3D
+ which generates clocks for 3D Graphics Engine IP.
+ - "samsung,exynos5433-cmu-gscl" - clock controller compatible for CMU_GSCL
+ which generates clocks for GSCALER IPs.
+
+- reg: physical base address of the controller and length of memory mapped
+ region.
+
+- #clock-cells: should be 1.
+
+- clocks: list of the clock controller input clock identifiers,
+ from common clock bindings. Please refer the next section
+ to find the input clocks for a given controller.
+
+- clock-names: list of the clock controller input clock names,
+ as described in clock-bindings.txt.
+
+ Input clocks for top clock controller:
+ - oscclk
+ - sclk_mphy_pll
+ - sclk_mfc_pll
+ - sclk_bus_pll
+
+ Input clocks for cpif clock controller:
+ - oscclk
+
+ Input clocks for mif clock controller:
+ - oscclk
+ - sclk_mphy_pll
+
+ Input clocks for fsys clock controller:
+ - oscclk
+ - sclk_ufs_mphy
+ - div_aclk_fsys_200
+ - sclk_pcie_100_fsys
+ - sclk_ufsunipro_fsys
+ - sclk_mmc2_fsys
+ - sclk_mmc1_fsys
+ - sclk_mmc0_fsys
+ - sclk_usbhost30_fsys
+ - sclk_usbdrd30_fsys
+
+ Input clocks for g2d clock controller:
+ - oscclk
+ - aclk_g2d_266
+ - aclk_g2d_400
+
+ Input clocks for disp clock controller:
+ - oscclk
+ - sclk_dsim1_disp
+ - sclk_dsim0_disp
+ - sclk_dsd_disp
+ - sclk_decon_tv_eclk_disp
+ - sclk_decon_vclk_disp
+ - sclk_decon_eclk_disp
+ - sclk_decon_tv_vclk_disp
+ - aclk_disp_333
+
+ Input clocks for bus0 clock controller:
+ - aclk_bus0_400
+
+ Input clocks for bus1 clock controller:
+ - aclk_bus1_400
+
+ Input clocks for bus2 clock controller:
+ - oscclk
+ - aclk_bus2_400
+
+ Input clocks for g3d clock controller:
+ - oscclk
+ - aclk_g3d_400
+
+ Input clocks for gscl clock controller:
+ - oscclk
+ - aclk_gscl_111
+ - aclk_gscl_333
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/exynos5433.h header and can be used in device
+tree sources.
+
+Example 1: Examples of 'oscclk' source clock node are listed below.
+
+ xxti: xxti {
+ compatible = "fixed-clock";
+ clock-output-names = "oscclk";
+ #clock-cells = <0>;
+ };
+
+Example 2: Examples of clock controller nodes are listed below.
+
+ cmu_top: clock-controller@10030000 {
+ compatible = "samsung,exynos5433-cmu-top";
+ reg = <0x10030000 0x0c04>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "sclk_mphy_pll",
+ "sclk_mfc_pll",
+ "sclk_bus_pll";
+ clocks = <&xxti>,
+ <&cmu_cpif CLK_SCLK_MPHY_PLL>,
+ <&cmu_mif CLK_SCLK_MFC_PLL>,
+ <&cmu_mif CLK_SCLK_BUS_PLL>;
+ };
+
+ cmu_cpif: clock-controller@10fc0000 {
+ compatible = "samsung,exynos5433-cmu-cpif";
+ reg = <0x10fc0000 0x0c04>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk";
+ clocks = <&xxti>;
+ };
+
+ cmu_mif: clock-controller@105b0000 {
+ compatible = "samsung,exynos5433-cmu-mif";
+ reg = <0x105b0000 0x100c>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "sclk_mphy_pll";
+ clocks = <&xxti>,
+ <&cmu_cpif CLK_SCLK_MPHY_PLL>;
+ };
+
+ cmu_peric: clock-controller@14c80000 {
+ compatible = "samsung,exynos5433-cmu-peric";
+ reg = <0x14c80000 0x0b08>;
+ #clock-cells = <1>;
+ };
+
+ cmu_peris: clock-controller@10040000 {
+ compatible = "samsung,exynos5433-cmu-peris";
+ reg = <0x10040000 0x0b20>;
+ #clock-cells = <1>;
+ };
+
+ cmu_fsys: clock-controller@156e0000 {
+ compatible = "samsung,exynos5433-cmu-fsys";
+ reg = <0x156e0000 0x0b04>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "sclk_ufs_mphy",
+ "div_aclk_fsys_200",
+ "sclk_pcie_100_fsys",
+ "sclk_ufsunipro_fsys",
+ "sclk_mmc2_fsys",
+ "sclk_mmc1_fsys",
+ "sclk_mmc0_fsys",
+ "sclk_usbhost30_fsys",
+ "sclk_usbdrd30_fsys";
+ clocks = <&xxti>,
+ <&cmu_cpif CLK_SCLK_UFS_MPHY>,
+ <&cmu_top CLK_DIV_ACLK_FSYS_200>,
+ <&cmu_top CLK_SCLK_PCIE_100_FSYS>,
+ <&cmu_top CLK_SCLK_UFSUNIPRO_FSYS>,
+ <&cmu_top CLK_SCLK_MMC2_FSYS>,
+ <&cmu_top CLK_SCLK_MMC1_FSYS>,
+ <&cmu_top CLK_SCLK_MMC0_FSYS>,
+ <&cmu_top CLK_SCLK_USBHOST30_FSYS>,
+ <&cmu_top CLK_SCLK_USBDRD30_FSYS>;
+ };
+
+ cmu_g2d: clock-controller@12460000 {
+ compatible = "samsung,exynos5433-cmu-g2d";
+ reg = <0x12460000 0x0b08>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "aclk_g2d_266",
+ "aclk_g2d_400";
+ clocks = <&xxti>,
+ <&cmu_top CLK_ACLK_G2D_266>,
+ <&cmu_top CLK_ACLK_G2D_400>;
+ };
+
+ cmu_disp: clock-controller@13b90000 {
+ compatible = "samsung,exynos5433-cmu-disp";
+ reg = <0x13b90000 0x0c04>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "sclk_dsim1_disp",
+ "sclk_dsim0_disp",
+ "sclk_dsd_disp",
+ "sclk_decon_tv_eclk_disp",
+ "sclk_decon_vclk_disp",
+ "sclk_decon_eclk_disp",
+ "sclk_decon_tv_vclk_disp",
+ "aclk_disp_333";
+ clocks = <&xxti>,
+ <&cmu_mif CLK_SCLK_DSIM1_DISP>,
+ <&cmu_mif CLK_SCLK_DSIM0_DISP>,
+ <&cmu_mif CLK_SCLK_DSD_DISP>,
+ <&cmu_mif CLK_SCLK_DECON_TV_ECLK_DISP>,
+ <&cmu_mif CLK_SCLK_DECON_VCLK_DISP>,
+ <&cmu_mif CLK_SCLK_DECON_ECLK_DISP>,
+ <&cmu_mif CLK_SCLK_DECON_TV_VCLK_DISP>,
+ <&cmu_mif CLK_ACLK_DISP_333>;
+ };
+
+ cmu_aud: clock-controller@114c0000 {
+ compatible = "samsung,exynos5433-cmu-aud";
+ reg = <0x114c0000 0x0b04>;
+ #clock-cells = <1>;
+ };
+
+ cmu_bus0: clock-controller@13600000 {
+ compatible = "samsung,exynos5433-cmu-bus0";
+ reg = <0x13600000 0x0b04>;
+ #clock-cells = <1>;
+
+ clock-names = "aclk_bus0_400";
+ clocks = <&cmu_top CLK_ACLK_BUS0_400>;
+ };
+
+ cmu_bus1: clock-controller@14800000 {
+ compatible = "samsung,exynos5433-cmu-bus1";
+ reg = <0x14800000 0x0b04>;
+ #clock-cells = <1>;
+
+ clock-names = "aclk_bus1_400";
+ clocks = <&cmu_top CLK_ACLK_BUS1_400>;
+ };
+
+ cmu_bus2: clock-controller@13400000 {
+ compatible = "samsung,exynos5433-cmu-bus2";
+ reg = <0x13400000 0x0b04>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk", "aclk_bus2_400";
+ clocks = <&xxti>, <&cmu_mif CLK_ACLK_BUS2_400>;
+ };
+
+ cmu_g3d: clock-controller@14aa0000 {
+ compatible = "samsung,exynos5433-cmu-g3d";
+ reg = <0x14aa0000 0x1000>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk", "aclk_g3d_400";
+ clocks = <&xxti>, <&cmu_top CLK_ACLK_G3D_400>;
+ };
+
+ cmu_gscl: clock-controller@13cf0000 {
+ compatible = "samsung,exynos5433-cmu-gscl";
+ reg = <0x13cf0000 0x0b10>;
+ #clock-cells = <1>;
+
+ clock-names = "oscclk",
+ "aclk_gscl_111",
+ "aclk_gscl_333";
+ clocks = <&xxti>,
+ <&cmu_top CLK_ACLK_GSCL_111>,
+ <&cmu_top CLK_ACLK_GSCL_333>;
+ };
+
+Example 3: UART controller node that consumes the clock generated by the clock
+ controller.
+
+ serial_0: serial@14C10000 {
+ compatible = "samsung,exynos5433-uart";
+ reg = <0x14C10000 0x100>;
+ interrupts = <0 421 0>;
+ clocks = <&cmu_peric CLK_PCLK_UART0>,
+ <&cmu_peric CLK_SCLK_UART0>;
+ clock-names = "uart", "clk_uart_baud0";
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_bus>;
+ status = "disabled";
+ };
--
1.8.5.5

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