This patch adds the binding documentation for Spreadtrum SC27xx series
PMIC device.
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
Changes since v3:
- No Updates.
Changes since v2:
- Add acked tag from Rob and Lee.
Changes since v1:
- Add more documentation to introduce Spreadtrum SC27xx series PMICs.
- Modify compatile string property.
- Modify reg property.
- Remove redundant 'pmic' label.
- Change 'should be' to 'must be' for cells properties.
---
.../devicetree/bindings/mfd/sprd,sc27xx-pmic.txt | 40 ++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
diff --git a/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt b/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
new file mode 100644
index 0000000..21b9a89
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
@@ -0,0 +1,40 @@
+Spreadtrum SC27xx Power Management Integrated Circuit (PMIC)
+
+The Spreadtrum SC27xx series PMICs contain SC2720, SC2721, SC2723, SC2730
+and SC2731. The Spreadtrum PMIC belonging to SC27xx series integrates all
+mobile handset power management, audio codec, battery management and user
+interface support function in a single chip. It has 6 major functional
+blocks:
+- DCDCs to support CPU, memory.
+- LDOs to support both internal and external requirement.
+- Battery management system, such as charger, fuel gauge.
+- Audio codec.
+- User interface function, such as indicator, flash LED and so on.
+- IC level interface, such as power on/off control, RTC and typec and so on.
+
+Required properties:
+- compatible: Should be one of the following:
+ "sprd,sc2720"
+ "sprd,sc2721"
+ "sprd,sc2723"
+ "sprd,sc2730"
+ "sprd,sc2731"
+- reg: The address of the device chip select, should be 0.
+- spi-max-frequency: Typically set to 26000000.
+- interrupts: The interrupt line the device is connected to.
+- interrupt-controller: Marks the device node as an interrupt controller.
+- #interrupt-cells: The number of cells to describe an PMIC IRQ, must be 2.
+- #address-cells: Child device offset number of cells, must be 1.
+- #size-cells: Child device size number of cells, must be 0.
+
+Example:
+pmic@0 {
+ compatible = "sprd,sc2731";
+ reg = <0>;
+ spi-max-frequency = <26000000>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
--
1.7.9.5
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