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>

1 files changed, 177 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mfd/rk808.txt b/Documentation/devicetree/bindings/mfd/rk808.txt
new file mode 100644
index 000000000000..9e6e2592e5c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/rk808.txt
@@ -0,0 +1,177 @@
+RK808 Power Management Integrated Circuit
+
+Required properties:
+- compatible: "rockchip,rk808"
+- reg: I2C slave address
+- interrupt-parent: The parent interrupt controller.
+- interrupts: the interrupt outputs of the controller.
+- #clock-cells: from common clock binding; shall be set to 1 (multiple clock
+  outputs). See <dt-bindings/clock/rockchip,rk808.h> for clock IDs.
+
+Optional properties:
+- clock-output-names: From common clock binding to override the
+  default output clock name
+- rockchip,system-power-controller: Telling whether or not this pmic is controlling
+  the system power.
+- vcc1-supply:  The input supply for DCDC_REG1
+- vcc2-supply:  The input supply for DCDC_REG2
+- vcc3-supply:  The input supply for DCDC_REG3
+- vcc4-supply:  The input supply for DCDC_REG4
+- vcc6-supply:  The input supply for LDO_REG1 and LDO_REG2
+- vcc7-supply:  The input supply for LDO_REG3 and LDO_REG7
+- vcc8-supply:  The input supply for SWITCH_REG1
+- vcc9-supply:  The input supply for LDO_REG4 and LDO_REG5
+- vcc10-supply: The input supply for LDO_REG6
+- vcc11-supply: The input supply for LDO_REG8
+- vcc12-supply: The input supply for SWITCH_REG2
+
+Regulators: All the regulators of RK808 to be instantiated shall be
+listed in a child node named 'regulators'. Each regulator is represented
+by a child node of the 'regulators' node.
+
+        regulator-name {
+                /* standard regulator bindings here */
+        };
+
+Following regulators of the RK808 PMIC block are supported. Note that
+the 'n' in regulator name, as in DCDC_REGn or LDOn, represents the DCDC or LDO
+number as described in RK808 datasheet.
+
+        - DCDC_REGn
+                - valid values for n are 1 to 4.
+        - LDO_REGn
+                - valid values for n are 1 to 8.
+        - SWITCH_REGn
+                - valid values for n are 1 to 2
+
+Standard regulator bindings are used inside regulator subnodes. Check
+  Documentation/devicetree/bindings/regulator/regulator.txt
+for more details
+
+Example:
+        rk808: pmic@1b {
+                compatible = "rockchip,rk808";
+                clock-output-names = "xin32k", "rk808-clkout2";
+                interrupt-parent = <&gpio0>;
+                interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&pmic_int>;
+                reg = <0x1b>;
+                rockchip,system-power-controller;
+                wakeup-source;
+                #clock-cells = <1>;
+
+                vcc8-supply = <&vcc_18>;
+                vcc9-supply = <&vcc_io>;
+                vcc10-supply = <&vcc_io>;
+                vcc12-supply = <&vcc_io>;
+                vddio-supply = <&vccio_pmu>;
+
+                regulators {
+                        vdd_cpu: DCDC_REG1 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <750000>;
+                                regulator-max-microvolt = <1300000>;
+                                regulator-name = "vdd_arm";
+                        };
+
+                        vdd_gpu: DCDC_REG2 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <850000>;
+                                regulator-max-microvolt = <1250000>;
+                                regulator-name = "vdd_gpu";
+                        };
+
+                        vcc_ddr: DCDC_REG3 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-name = "vcc_ddr";
+                        };
+
+                        vcc_io: DCDC_REG4 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <3300000>;
+                                regulator-max-microvolt = <3300000>;
+                                regulator-name = "vcc_io";
+                        };
+
+                        vccio_pmu: LDO_REG1 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <3300000>;
+                                regulator-max-microvolt = <3300000>;
+                                regulator-name = "vccio_pmu";
+                        };
+
+                        vcc_tp: LDO_REG2 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <3300000>;
+                                regulator-max-microvolt = <3300000>;
+                                regulator-name = "vcc_tp";
+                        };
+
+                        vdd_10: LDO_REG3 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <1000000>;
+                                regulator-max-microvolt = <1000000>;
+                                regulator-name = "vdd_10";
+                        };
+
+                        vcc18_lcd: LDO_REG4 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <1800000>;
+                                regulator-max-microvolt = <1800000>;
+                                regulator-name = "vcc18_lcd";
+                        };
+
+                        vccio_sd: LDO_REG5 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <1800000>;
+                                regulator-max-microvolt = <3300000>;
+                                regulator-name = "vccio_sd";
+                        };
+
+                        vdd10_lcd: LDO_REG6 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <1000000>;
+                                regulator-max-microvolt = <1000000>;
+                                regulator-name = "vdd10_lcd";
+                        };
+
+                        vcc_18: LDO_REG7 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <1800000>;
+                                regulator-max-microvolt = <1800000>;
+                                regulator-name = "vcc_18";
+                        };
+
+                        vcca_codec: LDO_REG8 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-min-microvolt = <3300000>;
+                                regulator-max-microvolt = <3300000>;
+                                regulator-name = "vcca_codec";
+                        };
+
+                        vcc_wl: SWITCH_REG1 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-name = "vcc_wl";
+                        };
+
+                        vcc_lcd: SWITCH_REG2 {
+                                regulator-always-on;
+                                regulator-boot-on;
+                                regulator-name = "vcc_lcd";
+                        };
+                };
+        };