[PATCH v3 06/10] spmi: document the PMIC arbiter SPMI bindings

[Josh Cartwright <joshc@codeaurora.org>]

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
---
 .../bindings/spmi/qcom,spmi-pmic-arb.txt           | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt

diff --git a/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt b/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt
new file mode 100644
index 0000000..68949aa
--- /dev/null
+++ b/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt
@@ -0,0 +1,42 @@
+Qualcomm SPMI Controller (PMIC Arbiter)
+
+The SPMI PMIC Arbiter is found on the Snapdragon 800 Series.  It is an SPMI
+controller with wrapping arbitration logic to allow for multiple on-chip
+devices to control a single SPMI master.
+
+The PMIC Arbiter can also act as an interrupt controller, providing interrupts
+to slave devices.
+
+See spmi.txt for the generic SPMI controller binding requirements for child
+nodes.
+
+Required properties:
+- compatible : should be "qcom,spmi-pmic-arb".
+- reg-names  : should be "core", "intr", "cnfg"
+- reg : offset and length of the PMIC Arbiter Core register map.
+- reg : offset and length of the PMIC Arbiter Interrupt controller register map.
+- reg : offset and length of the PMIC Arbiter Configuration register map.
+- #address-cells : must be set to 1
+- #size-cells : must be set to 0
+- interrupt-controller : indicates the PMIC arbiter is an interrupt controller
+- #interrupt-cells = <4>:  interrupts are specified as a 4-tuple:
+    cell 1: slave ID for the requested interrupt (0-15)
+    cell 2: peripheral ID for requested interrupt (0-255)
+    cell 3: the requested peripheral interrupt (0-7)
+    cell 4: interrupt flags indicating level-sense information, as defined in
+            dt-bindings/interrupt-controller/irq.h
+
+Example:
+
+	qcom,spmi@fc4c0000 {
+		compatible = "qcom,spmi-pmic-arb";
+		reg-names = "core", "intr", "cnfg";
+		reg = <0xfc4cf000 0x1000>,
+		      <0Xfc4cb000 0x1000>,
+		      <0Xfc4ca000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		interrupt-controller;
+		#interrupt-cells = <4>;
+	};
-- 
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