dt-bindings: mfd: rk808: Add binding information for RK809 and RK817.

Add device tree bindings documentation for Rockchip's RK809 & RK817 PMIC.
Signed-off-by: Tony Xie <tony.xie@rock-chips.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Documentation/devicetree/bindings/mfd/rk808.txt

@@ -3,11 +3,15 @@ RK8XX Power Management Integrated Circuit
 The rk8xx family current members:
 rk805
 rk808
+rk809
+rk817
 rk818
 
 Required properties:
 - compatible: "rockchip,rk805"
 - compatible: "rockchip,rk808"
+- compatible: "rockchip,rk809"
+- compatible: "rockchip,rk817"
 - compatible: "rockchip,rk818"
 - reg: I2C slave address
 - interrupts: the interrupt outputs of the controller.
@@ -45,6 +49,23 @@ Optional RK808 properties:
   the gpio controller. If DVS GPIOs aren't present, voltage changes will happen
   very quickly with no slow ramp time.
 
+Optional shared RK809 and RK817 properties:
+- 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
+- vcc5-supply:  The input supply for LDO_REG1, LDO_REG2, LDO_REG3
+- vcc6-supply:  The input supply for LDO_REG4, LDO_REG5, LDO_REG6
+- vcc7-supply:  The input supply for LDO_REG7, LDO_REG8, LDO_REG9
+
+Optional RK809 properties:
+- vcc8-supply:  The input supply for SWITCH_REG1
+- vcc9-supply:  The input supply for DCDC_REG5, SWITCH_REG2
+
+Optional RK817 properties:
+- vcc8-supply:  The input supply for BOOST
+- vcc9-supply:  The input supply for OTG_SWITCH
+
 Optional RK818 properties:
 - vcc1-supply:  The input supply for DCDC_REG1
 - vcc2-supply:  The input supply for DCDC_REG2
@@ -86,6 +107,21 @@ number as described in RK808 datasheet.
 	- SWITCH_REGn
 		- valid values for n are 1 to 2
 
+Following regulators of the RK809 and RK817 PMIC blocks are supported. Note that
+the 'n' in regulator name, as in DCDC_REGn or LDOn, represents the DCDC or LDO
+number as described in RK809 and RK817 datasheets.
+
+	- DCDC_REGn
+		- valid values for n are 1 to 5 for RK809.
+		- valid values for n are 1 to 4 for RK817.
+	- LDO_REGn
+		- valid values for n are 1 to 9 for RK809.
+		- valid values for n are 1 to 9 for RK817.
+	- SWITCH_REGn
+		- valid values for n are 1 to 2 for RK809.
+	- BOOST for RK817
+	- OTG_SWITCH for RK817
+
 Following regulators of the RK818 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 RK818 datasheet.
@@ -98,6 +134,14 @@ number as described in RK818 datasheet.
 	- HDMI_SWITCH
 	- OTG_SWITCH
 
+It is necessary to configure three pins for both the RK809 and RK817, the three
+pins are "gpio_ts" "gpio_gt" "gpio_slp".
+	The gpio_gt and gpio_ts pins support the gpio function.
+	The gpio_slp pin is for controlling the pmic states, as below:
+		- reset
+		- power down
+		- sleep
+
 Standard regulator bindings are used inside regulator subnodes. Check
   Documentation/devicetree/bindings/regulator/regulator.txt
 for more details