Messages in this thread Patch in this message | | | From | Stanimir Varbanov <> | Subject | [PATCH v2 2/4] mfd: pm8xxx-spmi: document DT bindings for Qualcomm SPMI PMICs | Date | Thu, 17 Jul 2014 19:17:33 +0300 |
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Document DT bindings used to describe the Qualcomm SPMI PMICs. Currently the SPMI PMICs supported are pm8941, pm8841 and pma8084.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> --- .../devicetree/bindings/mfd/qcom,pm8xxx-spmi.txt | 49 ++++++++++++++++++++ 1 files changed, 49 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/qcom,pm8xxx-spmi.txt
diff --git a/Documentation/devicetree/bindings/mfd/qcom,pm8xxx-spmi.txt b/Documentation/devicetree/bindings/mfd/qcom,pm8xxx-spmi.txt new file mode 100644 index 0000000..2b7f5b6 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/qcom,pm8xxx-spmi.txt @@ -0,0 +1,49 @@ + Qualcomm PM8XXX SPMI PMICs multi-function device bindings + +The Qualcomm PM8XXX series presently includes PM8941, PM8841 and PMA8084 +PMICs. These PMICs use a QPNP scheme through SPMI interface. +QPNP is effectively a partitioning scheme for dividing the SPMI extended +register space up into logical pieces, and set of fixed register +locations/definitions within these regions, with some of these regions +specifically used for interrupt handling. + +The QPNP PMICs are used with the Qualcomm Snapdragon series SoCs, and are +interfaced to the chip via the SPMI (System Power Management Interface) bus. +Support for multiple independent functions are implemented by splitting the +16-bit SPMI slave address space into 256 smaller fixed-size regions, 256 bytes +each. A function can consume one or more of these fixed-size register regions. + +Required properties: +- compatible: Should contain one of: + "qcom,pm8941" + "qcom,pm8841" + "qcom,pma8084" +- reg: Specifies the SPMI USID slave address for this device. + For more information see: + Documentation/devicetree/bindings/spmi/spmi.txt + +Required properties for peripheral child nodes: +- compatible: Should contain "qcom,pm8xxx-xxx", where "xxx" is + peripheral name. The "pm8xxx" can be any of supported PMICs, + see example below. + +Optional properties for peripheral child nodes: +- interrupts: Interrupts are specified as a 4-tuple. For more information + see: + Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt +- interrupt-names: Corresponding interrupt name to the interrupts property + +Each child node represents a function of the PMIC. + +Example: + + pm8941@0 { + compatible = "qcom,pm8941"; + reg = <0x0 SPMI_USID>; + + rtc { + compatible = "qcom,pm8941-rtc"; + interrupts = <0x0 0x61 0x1 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "alarm"; + }; + }; -- 1.7.0.4
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