From: Ivan T. Ivanov <[email protected]> Document DT bindings used to describe the Qualcomm QPNP PMICs.
Signed-off-by: Ivan T. Ivanov <[email protected]> Signed-off-by: Stanimir Varbanov <[email protected]> --- .../devicetree/bindings/qpnp/qcom,qpnp-spmi.txt | 53 ++++++++++++++++++++ 1 files changed, 53 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/qpnp/qcom,qpnp-spmi.txt diff --git a/Documentation/devicetree/bindings/qpnp/qcom,qpnp-spmi.txt b/Documentation/devicetree/bindings/qpnp/qcom,qpnp-spmi.txt new file mode 100644 index 0000000..24cde34 --- /dev/null +++ b/Documentation/devicetree/bindings/qpnp/qcom,qpnp-spmi.txt @@ -0,0 +1,53 @@ +Qualcomm QPNP partitioned PMIC multi-function device bindings + +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 "qcom,qpnp-spmi" +- reg: Specifies the SPMI USID slave address for this device. + For more information see: + Documentation/devicetree/bindings/spmi/spmi.txt +- #address-cells: Defines address cells for peripheral nodes - should be 1 +- #size-cells: Defines size cells for peripheral nodes - should be 0 + +Required properties for peripheral child nodes: +- compatible: Should constain "qcom,qpnp-xxx" +- reg: One or more 16bits peripheral address(es) + +Optional properties for peripheral child nodes: +- reg-names: Shall be a string describing the reg resource. +- 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 QPNP. Each child 'reg' entry +describes a QPNP peripheral address within the USID slave address space where +the region starts. + +Example: + + pm8941@0 { + compatible = "qcom,qpnp-spmi"; + reg = <0x0 SPMI_USID>; + + #address-cells = <1>; + #size-cells = <0>; + + rtc@6000 { + compatible = "qcom,qpnp-rtc"; + reg = <0x6000 0x6100>; + reg-names = "rtc", "alarm"; + interrupts = <0x0 0x61 0x1 IRQ_TYPE_EDGE_RISING>; + }; + }; + -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
