[PATCH v4 2/3] mfd: document DT bindings for Qualcomm SPMI PMICs

[Stanimir Varbanov]

Kumar, Stephen, David can I have your Acked/Reviewed-by tag for 2/3 and
if possible for 3/3. The last patch can wait because currently we don't
have child peripherals. Thanks.

regards,
Stan

On 08/01/2014 05:30 PM, Stanimir Varbanov wrote:
> Document DT bindings used to describe the Qualcomm SPMI PMICs.
> 
> Signed-off-by: Stanimir Varbanov <svarbanov at mm-sol.com>
> ---
>  .../devicetree/bindings/mfd/qcom,spmi-pmic.txt     |   64 ++++++++++++++++++++
>  1 files changed, 64 insertions(+), 0 deletions(-)
>  create mode 100644 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 0000000..7182b88
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt
> @@ -0,0 +1,64 @@
> +          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"
> +                     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 at 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 at 1 {
> +			compatible = "qcom,pm8941", "qcom,spmi-pmic";
> +			reg = <0x1 SPMI_USID>;
> +
> +			regulator {
> +				compatible = "qcom,regulator";
> +				regulator-name = "8941_boost";
> +			};
> +		};
> +	};
> 


-- 
regards,
Stan