1 files changed, 65 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt b/kernel/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt
new file mode 100644
index 000000000..e16b9b5af
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt
@@ -0,0 +1,65 @@
+Qualcomm SPMI Controller (PMIC Arbiter)
+
+The SPMI PMIC Arbiter is found on Snapdragon chipsets.  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.
+
+See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
+generic interrupt controller binding documentation.
+
+Required properties:
+- compatible : should be "qcom,spmi-pmic-arb".
+- reg-names  : must contain:
+     "core" - core registers
+     "intr" - interrupt controller registers
+     "cnfg" - configuration registers
+   Registers used only for V2 PMIC Arbiter:
+     "chnls"  - tx-channel per virtual slave registers.
+     "obsrvr" - rx-channel (called observer) per virtual slave registers.
+
+- reg : address + size pairs describing the PMIC arb register sets; order must
+        correspond with the order of entries in reg-names
+- #address-cells : must be set to 2
+- #size-cells : must be set to 0
+- qcom,ee : indicates the active Execution Environment identifier (0-5)
+- qcom,channel : which of the PMIC Arb provided channels to use for accesses (0-5)
+- interrupts : interrupt list for the PMIC Arb controller, must contain a
+               single interrupt entry for the peripheral interrupt
+- interrupt-names : corresponding interrupt names for the interrupts
+                    listed in the 'interrupts' property, must contain:
+     "periph_irq" - summary interrupt for PMIC peripherals
+- interrupt-controller : boolean indicator that the PMIC arbiter is an interrupt controller
+- #interrupt-cells :  must be set to 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:
+
+	spmi {
+		compatible = "qcom,spmi-pmic-arb";
+		reg-names = "core", "intr", "cnfg";
+		reg = <0xfc4cf000 0x1000>,
+		      <0xfc4cb000 0x1000>,
+		      <0xfc4ca000 0x1000>;
+
+		interrupt-names = "periph_irq";
+		interrupts = <0 190 0>;
+
+		qcom,ee = <0>;
+		qcom,channel = <0>;
+
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		interrupt-controller;
+		#interrupt-cells = <4>;
+	};