Add documentation for HiSilicon Hi6421 PMIC dt binding.
Signed-off-by: Guodong Xu <guodong...@linaro.org>
---
Documentation/devicetree/bindings/mfd/hi6421.txt | 38 ++++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/hi6421.txt
diff --git a/Documentation/devicetree/bindings/mfd/hi6421.txt
b/Documentation/devicetree/bindings/mfd/hi6421.txt
new file mode 100644
index 0000000..0d5a446
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/hi6421.txt
@@ -0,0 +1,38 @@
+* HI6421 Multi-Functional Device (MFD), by HiSilicon Ltd.
+
+Required parent device properties:
+- compatible : contains "hisilicon,hi6421-pmic";
+- reg : register range space of hi6421;
+
+Supported Hi6421 sub-devices include:
+
+Device IRQ Names Supply Names Description
+------ --------- ------------ -----------
+regulators : None : None : Regulators
+
+Required child device properties:
+None.
+
+Example:
+ hi6421 {
+ compatible = "hisilicon,hi6421-pmic";
+ reg = <0xfcc00000 0x0180>; /* 0x60 << 2 */
+
+ regulators {
+ // supply for MLC NAND/ eMMC
+ hi6421_vout0_reg: hi6421_vout0 {
+ regulator-name = "VOUT0";
+ regulator-min-microvolt = <2850000>;
+ regulator-max-microvolt = <2850000>;
+ };
+
+ // supply for 26M Oscillator
+ hi6421_vout1_reg: hi6421_vout1 {
+ regulator-name = "VOUT1";
+ regulator-min-microvolt = <1700000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
--
1.9.1
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