On Mar 3, 2015, at 6:21 PM, Kenneth Westfield <kwestfie@xxxxxxxxxxxxxx> wrote:
> From: Kenneth Westfield <kwestfie@xxxxxxxxxxxxxx>
>
> Add documentation to the sound directory of the
> device-tree bindings for the QTi LPASS CPU DAI
> device.
>
> Signed-off-by: Kenneth Westfield <kwestfie@xxxxxxxxxxxxxx>
> Acked-by: Banajit Goswami <bgoswami@xxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/sound/qcom,lpass-cpu.txt | 49 ++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/qcom,lpass-cpu.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.txt b/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.txt
> new file mode 100644
> index 0000000000000000000000000000000000000000..e7c6e9321863f022ebf0d51b75d7bb83c10b9062
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.txt
> @@ -0,0 +1,49 @@
> +* Qualcomm Technologies LPASS CPU DAI
> +
> +This node models the Qualcomm Technologies Low-Power Audio SubSystem (LPASS).
> +
> +Required properties:
> +
> +- compatible : "qcom,lpass-cpu"
> +- clocks : Must contain an entry for each entry in clock-names.
> +- clock-names : A list which must include the following entries:
> + * "ahbix-clk"
> + * "mi2s-osr-clk"
> + * "mi2s-bit-clk"
> +- interrupts : Must contain an entry for each entry in
> + interrupt-names.
> +- interrupt-names : A list which must include the following entries:
> + * "lpass-irq-lpaif"
> +- pinctrl-N : One property must exist for each entry in
> + pinctrl-names. See ../pinctrl/pinctrl-bindings.txt
> + for details of the property values.
> +- pinctrl-names : Must contain a "default" entry.
> +- reg : Must contain an address for each entry in reg-names.
> +- reg-names : A list which must include the following entries:
> + * "lpass-lpaif"
> +
> +Required subnodes:
> +
> +- qcom,adsp : Audio DSP sub-node
> +
What is the intent of this subnode?
> +Optional Audio DSP subnode properties:
> +
> +- status : "disabled" indicates the adsp is not available.
> +
> +Example:
> +
> +lpass@28100000 {
> + compatible = "qcom,lpass-cpu";
> + clocks = <&lcc AHBIX_CLK>, <&lcc MI2S_OSR_CLK>, <&lcc MI2S_BIT_CLK>;
> + clock-names = "ahbix-clk", "mi2s-osr-clk", "mi2s-bit-clk";
> + interrupts = <0 85 1>;
> + interrupt-names = "lpass-irq-lpaif";
> + pinctrl-names = "default", "idle";
> + pinctrl-0 = <&mi2s_default>;
> + pinctrl-1 = <&mi2s_idle>;
> + reg = <0x28100000 0x10000>;
> + reg-names = "lpass-lpaif";
> + qcom,adsp {
> + status = "disabled";
> + };
> +};
> --
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