From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- .../devicetree/bindings/mfd/qcom,spmi-pmic.txt | 75 ++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt (limited to 'Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt') diff --git a/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt new file mode 100644 index 000000000..6ac06c1b9 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt @@ -0,0 +1,75 @@ + Qualcomm SPMI PMICs multi-function device bindings + +The Qualcomm SPMI 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", + "qcom,pm8019", + "qcom,pm8226", + "qcom,pm8110", + "qcom,pma8084", + "qcom,pmi8962", + "qcom,pmd9635", + "qcom,pm8994", + "qcom,pmi8994", + "qcom,pm8916", + "qcom,pm8004", + "qcom,pm8909", + or generalized "qcom,spmi-pmic". +- 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,xxx", where "xxx" is a peripheral name. + +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 of SPMI slave id represents a function of the PMIC. In the +example below the rtc device node represents a peripheral of pm8941 +SID = 0. The regulator device node represents a peripheral of pm8941 SID = 1. + +Example: + + spmi { + compatible = "qcom,spmi-pmic-arb"; + + pm8941@0 { + compatible = "qcom,pm8941", "qcom,spmi-pmic"; + reg = <0x0 SPMI_USID>; + + rtc { + compatible = "qcom,rtc"; + interrupts = <0x0 0x61 0x1 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "alarm"; + }; + }; + + pm8941@1 { + compatible = "qcom,pm8941", "qcom,spmi-pmic"; + reg = <0x1 SPMI_USID>; + + regulator { + compatible = "qcom,regulator"; + regulator-name = "8941_boost"; + }; + }; + }; -- cgit v1.2.3-54-g00ecf