Re: [PATCH v6 4/5] dt-bindings: pinctrl: qcom,hawi-lpass-lpi-pinctrl: Add Hawi LPI pinctrl

[Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>]

On 7/24/26 3:17 PM, Prasad Kumpatla wrote:
> Add bindings for the pin controller in Low Power Audio SubSystem (LPASS)
> of Qualcomm Hawi SoC.
> 
> The controller has 23 GPIOs (gpio0-gpio22) with functions including
> SoundWire, I2S, DMIC, VA I2S, ext_mclk1, slimbus and lpass_lpi_dbg_clk.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
> Signed-off-by: Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
> ---
>  .../pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml  | 109 ++++++++++++++++++
>  1 file changed, 109 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
> new file mode 100644
> index 000000000000..af68581750cf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
> @@ -0,0 +1,109 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Hawi SoC LPASS LPI TLMM
> +
> +maintainers:
> +  - Krzysztof Kozlowski <krzk@kernel.org>
> +  - Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
> +  - Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
> +
> +description:
> +  Top Level Mode Multiplexer pin controller in the Low Power Audio SubSystem
> +  (LPASS) Low Power Island (LPI) of Qualcomm Hawi SoC.
> +
> +properties:
> +  compatible:
> +    const: qcom,hawi-lpass-lpi-pinctrl
> +
> +  reg:
> +    items:
> +      - description: LPASS LPI TLMM Control and Status registers
> +
> +  clocks:
> +    items:
> +      - description: LPASS LPR(Low Power Resource) voting clock
> +      - description: LPASS Audio voting clock
> +
> +  clock-names:
> +    items:
> +      - const: lpr
> +      - const: audio
> +
> +patternProperties:
> +  "-state$":
> +    oneOf:
> +      - $ref: "#/$defs/qcom-hawi-lpass-state"
> +      - patternProperties:
> +          "-pins$":
> +            $ref: "#/$defs/qcom-hawi-lpass-state"
> +        additionalProperties: false
> +
> +$defs:
> +  qcom-hawi-lpass-state:
> +    type: object
> +    description:
> +      Pinctrl node's client devices use subnodes for desired pin configuration.
> +      Client device subnodes use below standard properties.
> +    $ref: qcom,lpass-lpi-common.yaml#/$defs/qcom-tlmm-state
> +    unevaluatedProperties: false
> +
> +    properties:
> +      pins:
> +        description:
> +          List of gpio pins affected by the properties specified in this
> +          subnode.
> +        items:
> +          pattern: "^gpio([0-9]|1[0-9]|2[0-2])$"
> +
> +      function:
> +        enum: [dmic1_clk, dmic1_data, dmic2_clk, dmic2_data, dmic3_clk,
> +               dmic3_data, dmic4_clk, dmic4_data, ext_mclk1_a, ext_mclk1_b,
> +               ext_mclk1_c, ext_mclk1_d, ext_mclk1_e, gpio, i2s0_clk,
> +               i2s0_data, i2s0_ws, i2s1_clk, i2s1_data, i2s1_ws, i2s2_clk,
> +               i2s2_data, i2s2_ws, i2s3_clk, i2s3_data, i2s3_ws,
> +               lpass_lpi_dbg_clk, qca_swr_clk, qca_swr_data, slimbus_clk,
> +               slimbus_data, swr_rx_clk, swr_rx_data, swr_tx_clk, swr_tx_clk1,
> +               swr_tx_data, va_i2s0_clk, va_i2s0_data, va_i2s0_ws,
> +               wsa2_swr_clk, wsa2_swr_data, wsa_swr_clk, wsa_swr_data]
> +        description:
> +          Specify the alternative function to be configured for the specified
> +          pins.
> +
> +allOf:
> +  - $ref: qcom,lpass-lpi-common.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
> +
> +    lpass_tlmm: pinctrl@7f60000 {
> +        compatible = "qcom,hawi-lpass-lpi-pinctrl";
> +        reg = <0x07f60000 0x20000>;
> +
> +        clocks = <&q6prmcc LPASS_HW_LPR_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
> +                 <&q6prmcc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;

TBH, you could have used integer instead of define here, which could
have made things easy for maintainer to merge the series.

--srini
> +        clock-names = "lpr", "audio";
> +
> +        gpio-controller;
> +        #gpio-cells = <2>;
> +        gpio-ranges = <&lpass_tlmm 0 0 23>;
> +
> +        tx-swr-sleep-clk-state {
> +            pins = "gpio0";
> +            function = "swr_tx_clk";
> +            drive-strength = <2>;
> +            bias-pull-down;
> +        };
> +    };