[PATCH v3 3/4] mfd: Add DT binding for Maxim MAX77802 IC

[Javier Martinez Canillas]

The MAX77802 is a chip that contains regulators, 2 32kHz clocks,
a RTC and an I2C interface to program the individual components.

The are already DT bindings for the regulators and clocks and
these reference to a bindings/mfd/max77802.txt file, that didn't
exist, for the details about the PMIC.

Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>

---

Changes in v3:
- Add Krzysztof Kozlowski Reviewed-by tag to patch #3.
- Capitalise all acronyms. Suggested by Lee Jones.
- Use relative path to refer other bindings. Suggested by Lee Jones.
- Use IRQ_TYPE_NONE instead of 0 in example. Suggested by Lee Jones.

Changes in v2:
- Use the correct "maxim,max77802" compatible string.
  Suggested by Krzysztof Kozlowski
- Use a pmic generic node name for the max77802 node example.
  Suggested by Sergei Shtylyov.

 Documentation/devicetree/bindings/mfd/max77802.txt | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/max77802.txt

diff --git a/Documentation/devicetree/bindings/mfd/max77802.txt b/Documentation/devicetree/bindings/mfd/max77802.txt
new file mode 100644
index 000000000000..911ec5fcaefd
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/max77802.txt
@@ -0,0 +1,26 @@
+Maxim MAX77802 multi-function device
+
+The Maxim MAX77802 is a Power Management IC (PMIC) that contains 10 high
+efficiency Buck regulators, 32 Low-DropOut (LDO) regulators used to power
+up application processors and peripherals, a 2-channel 32kHz clock outputs,
+a Real-Time-Clock (RTC) and a I2C interface to program the individual
+regulators, clocks outputs and the RTC.
+
+Binding for the built-in 32k clock generator block is defined separately
+in the ../clk/maxim,max77802.txt file and binding for the regulators
+is defined in the ../regulator/max77802.txt file.
+
+Required properties:
+- compatible : Must be "maxim,max77802";
+- reg : Specifies the I2C slave address of PMIC block.
+- interrupts : This I2C device has an IRQ line connected to the main SoC.
+- interrupt-parent : The parent interrupt controller.
+
+Example:
+
+	max77802: pmic@09 {
+		compatible = "maxim,max77802";
+		interrupt-parent = <&intc>;
+		interrupts = <26 IRQ_TYPE_NONE>;
+		reg = <0x09>;
+	};
-- 
2.4.3

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