[PATCH v5 1/5] dt-bindings: Add RK808 device tree bindings document

[Chris Zhong <zyw@rock-chips.com>]

Add device tree bindings documentation and a header file
for rockchip's RK808 pmic.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>

---

Changes in v5:
Adviced by doug
- add some error checking in probe
- move "rockchip,rk808.h" into the patch about dt-bindings

Changes in v4:
Adviced by doug
- add "clock-output-names" propertiey
- add a header file "rockchip,rk808.h"

Changes in v3:
- fix compile err

Changes in v2:
Adviced by javier.martinez
- separated from rtc-rk808.c

 Documentation/devicetree/bindings/mfd/rk808.txt |  142 +++++++++++++++++++++++
 include/dt-bindings/clock/rockchip,rk808.h      |   11 ++
 2 files changed, 153 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/rk808.txt
 create mode 100644 include/dt-bindings/clock/rockchip,rk808.h

diff --git a/Documentation/devicetree/bindings/mfd/rk808.txt b/Documentation/devicetree/bindings/mfd/rk808.txt
new file mode 100644
index 0000000..e5786e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/rk808.txt
@@ -0,0 +1,142 @@
+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.
+- pinctrl-names: Should contain only one value - "default".
+- pinctrl-0: Should specify pin control groups used for this controller.
+- regulators: This is the list of child nodes that specify the regulator
+  initialization data for defined regulators. Not all regulators for the given
+  device need to be present. The definition for each of these nodes is defined
+  using the standard binding for regulators found at
+  Documentation/devicetree/bindings/regulator/regulator.txt.
+- #clock-cells: the value should be 1
+- The following are the names of the regulators that the rk808 pmic block
+  supports. Note: The 'n' below represents the number as per the 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.
+
+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.
+
+Example:
+rk808: pmic@1b {
+	compatible = "rockchip,rk808";
+	interrupt-parent = <&gpio0>;
+	interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pmic_int>;
+	reg = <0x1b>;
+	#clock-cells = <1>;
+	clock-output-names = "xin32k0", "xin32k1";
+	rockchip,system-power-controller;
+
+		regulators {
+			rk808_dcdc1_reg: DCDC_REG1 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-name = "vdd_arm";
+			};
+
+			rk808_dcdc2_reg: DCDC_REG2 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <1250000>;
+				regulator-name = "vdd_gpu";
+			};
+
+			rk808_dcdc3_reg: DCDC_REG3 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-name = "vdd_ddr";
+			};
+
+			rk808_dcdc4_reg: DCDC_REG4 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vccio";
+			};
+
+			rk808_ldo1_reg: LDO_REG1 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			rk808_ldo2_reg: LDO_REG2 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			rk808_ldo3_reg: LDO_REG3 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-name = "LDO_REG3";
+			};
+
+			rk808_ldo4_reg: LDO_REG4 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
+
+			rk808_ldo5_reg: LDO_REG5 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			rk808_ldo6_reg: LDO_REG6 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+			};
+
+			rk808_ldo7_reg: LDO_REG7 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
+
+			rk808_ldo8_reg: LDO_REG8 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			rk808_switch1_reg: SWITCH_REG1 {
+				regulator-always-on;
+				regulator-boot-on;
+			};
+
+			rk808_switch2_reg: SWITCH_REG2 {
+				regulator-always-on;
+				regulator-boot-on;
+			};
+		};
+	};
diff --git a/include/dt-bindings/clock/rockchip,rk808.h b/include/dt-bindings/clock/rockchip,rk808.h
new file mode 100644
index 0000000..1a87343
--- /dev/null
+++ b/include/dt-bindings/clock/rockchip,rk808.h
@@ -0,0 +1,11 @@
+/*
+ * This header provides constants clk index RK808 pmic clkout
+ */
+#ifndef _CLK_ROCKCHIP_RK808
+#define _CLK_ROCKCHIP_RK808
+
+/* CLOCKOUT index */
+#define RK808_CLKOUT0		0
+#define RK808_CLKOUT1		1
+
+#endif
-- 
1.7.9.5