[PATCH v3 06/10] spmi: document the PMIC arbiter SPMI bindings
From: Ivan T. Ivanov <hidden>
Date: 2013-10-29 14:09:46
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linux-arm-msm, linux-devicetree, lkml
Hi Josh, On Mon, 2013-10-28 at 13:12 -0500, Josh Cartwright wrote:
quoted hunk ↗ jump to hunk
Signed-off-by: Josh Cartwright <redacted> --- .../bindings/spmi/qcom,spmi-pmic-arb.txt | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txtdiff --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
This doesn't seem to follow generic set of bindings for the SPMI controllers. #address-cells : must be set to 2. Regards, Ivan
+- #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 at 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>;
+ };