[PATCH v3 09/10] mfd: pm8x41: document device tree bindings

Josh Cartwright
2013-10-28T19:14:20Z

Document the bindings used to describe the Qualcomm 8x41 PMICs.

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
---
Documentation/devicetree/bindings/mfd/pm8x41.txt | 33 ++++++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/pm8x41.txt

diff --git a/Documentation/devicetree/bindings/mfd/pm8x41.txt b/Documentation/devicetree/bindings/mfd/pm8x41.txt
new file mode 100644
index 0000000..6afd4ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/pm8x41.txt
@@ -0,0 +1,33 @@
+Qualcomm PM8841 and PM8941 PMIC multi-function devices
+
+The PM8x41 PMICs are used with the Qualcomm Snapdragon 800 series SoCs, and are
+interfaced to the chip via the SPMI (System Power Management Interface) bus.
+Support for multiple independent functions are implemented by splitting the
+16-bit SPMI slave address space into 256 smaller fixed-size regions, 256 bytes
+each. A function can consume one or more of these fixed-size register regions.
+
+Required properties:
+- compatible: Must be one of:
+ "qcom,pm8841"
+ "qcom,pm8941"
+- reg: Specifies the SPMI USID slave address for this device
+- #address-cells = <1>
+- #size-cells = <0>
+
+Each child node represents a function of the PM8x41. Each child 'reg' entry
+describes an offset within the USID slave address where the region starts.
+
+Example:
+
+pm8941@0 {
+ compatible = "qcom,pm8941";
+ reg = <0x0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rtc {
+ compatible = "qcom,pm8941-rtc";
+ reg = <0x6000 0x6100>;
+ };
+}