mfd: dt-bindings: Add RK808 device tree bindings document
Add device tree bindings documentation and a header file for rockchip's RK808 pmic. Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Zhang Qing <zhangqing@rock-chips.com> Tested-by: Heiko <heiko@sntech.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Chris Zhong
Lee Jones
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RK808 Power Management Integrated Circuit
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Required properties:
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- compatible: "rockchip,rk808"
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- reg: I2C slave address
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- interrupt-parent: The parent interrupt controller.
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- interrupts: the interrupt outputs of the controller.
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- #clock-cells: from common clock binding; shall be set to 1 (multiple clock
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outputs). See <dt-bindings/clock/rockchip,rk808.h> for clock IDs.
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Optional properties:
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- clock-output-names: From common clock binding to override the
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default output clock name
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- rockchip,system-power-controller: Telling whether or not this pmic is controlling
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the system power.
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- vcc1-supply: The input supply for DCDC_REG1
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- vcc2-supply: The input supply for DCDC_REG2
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- vcc3-supply: The input supply for DCDC_REG3
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- vcc4-supply: The input supply for DCDC_REG4
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- vcc6-supply: The input supply for LDO_REG1 and LDO_REG2
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- vcc7-supply: The input supply for LDO_REG3 and LDO_REG7
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- vcc8-supply: The input supply for SWITCH_REG1
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- vcc9-supply: The input supply for LDO_REG4 and LDO_REG5
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- vcc10-supply: The input supply for LDO_REG6
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- vcc11-supply: The input supply for LDO_REG8
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- vcc12-supply: The input supply for SWITCH_REG2
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Regulators: All the regulators of RK808 to be instantiated shall be
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listed in a child node named 'regulators'. Each regulator is represented
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by a child node of the 'regulators' node.
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regulator-name {
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/* standard regulator bindings here */
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};
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Following regulators of the RK808 PMIC block are supported. Note that
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the 'n' in regulator name, as in DCDC_REGn or LDOn, represents the DCDC or LDO
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number as described in RK808 datasheet.
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- DCDC_REGn
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- valid values for n are 1 to 4.
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- LDO_REGn
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- valid values for n are 1 to 8.
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- SWITCH_REGn
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- valid values for n are 1 to 2
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Standard regulator bindings are used inside regulator subnodes. Check
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Documentation/devicetree/bindings/regulator/regulator.txt
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for more details
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Example:
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rk808: pmic@1b {
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compatible = "rockchip,rk808";
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clock-output-names = "xin32k", "rk808-clkout2";
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interrupt-parent = <&gpio0>;
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interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
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pinctrl-names = "default";
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pinctrl-0 = <&pmic_int>;
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reg = <0x1b>;
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rockchip,system-power-controller;
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wakeup-source;
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#clock-cells = <1>;
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vcc8-supply = <&vcc_18>;
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vcc9-supply = <&vcc_io>;
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vcc10-supply = <&vcc_io>;
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vcc12-supply = <&vcc_io>;
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vddio-supply = <&vccio_pmu>;
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regulators {
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vdd_cpu: DCDC_REG1 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <750000>;
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regulator-max-microvolt = <1300000>;
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regulator-name = "vdd_arm";
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};
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vdd_gpu: DCDC_REG2 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <850000>;
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regulator-max-microvolt = <1250000>;
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regulator-name = "vdd_gpu";
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};
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vcc_ddr: DCDC_REG3 {
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regulator-always-on;
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regulator-boot-on;
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regulator-name = "vcc_ddr";
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};
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vcc_io: DCDC_REG4 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc_io";
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};
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vccio_pmu: LDO_REG1 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vccio_pmu";
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};
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vcc_tp: LDO_REG2 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc_tp";
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};
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vdd_10: LDO_REG3 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1000000>;
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regulator-name = "vdd_10";
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};
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vcc18_lcd: LDO_REG4 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc18_lcd";
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};
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vccio_sd: LDO_REG5 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vccio_sd";
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};
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vdd10_lcd: LDO_REG6 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1000000>;
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regulator-name = "vdd10_lcd";
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};
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vcc_18: LDO_REG7 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc_18";
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};
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vcca_codec: LDO_REG8 {
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regulator-always-on;
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regulator-boot-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcca_codec";
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};
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vcc_wl: SWITCH_REG1 {
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regulator-always-on;
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regulator-boot-on;
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regulator-name = "vcc_wl";
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};
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vcc_lcd: SWITCH_REG2 {
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regulator-always-on;
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regulator-boot-on;
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regulator-name = "vcc_lcd";
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};
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};
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};
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@ -0,0 +1,11 @@
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/*
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* This header provides constants clk index RK808 pmic clkout
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*/
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#ifndef _CLK_ROCKCHIP_RK808
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#define _CLK_ROCKCHIP_RK808
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/* CLOCKOUT index */
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#define RK808_CLKOUT0 0
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#define RK808_CLKOUT1 1
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#endif
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