On 16/08/2022 21:05, Srinivas Kandagatla wrote:
> Add device tree binding Documentation details for Qualcomm SC8280XP
> LPASS(Low Power Audio Sub System) LPI(Low Power Island) pinctrl driver.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Thank you for your patch. There is something to discuss/improve.
> + gpio-ranges:
> + maxItems: 1
> +
> +#PIN CONFIGURATION NODES
> +patternProperties:
> + '-pins$':
> + type: object
> + description:
> + Pinctrl node's client devices use subnodes for desired pin configuration.
> + Client device subnodes use below standard properties.
> + $ref: "/schemas/pinctrl/pincfg-node.yaml"
Drop the quotes.
> +
> + properties:
> + pins:
> + description:
> + List of gpio pins affected by the properties specified in this
> + subnode.
> + items:
> + pattern: "^gpio([0-1]|[0-8]])$"
error in pattern - double ]. If you have 19 GPIOs, this should be
probably: ^gpio([0-9]|1[0-8])$
> +
> + function:
> + enum: [ swr_tx_clk, swr_tx_data, swr_rx_clk, swr_rx_data,
> + dmic1_clk, dmic1_data, dmic2_clk, dmic2_data, dmic4_clk,
> + dmic4_data, i2s2_clk, i2s2_ws, dmic3_clk, dmic3_data,
> + qua_mi2s_sclk, qua_mi2s_ws, qua_mi2s_data, i2s1_clk, i2s1_ws,
> + i2s1_data, wsa_swr_clk, wsa_swr_data, wsa2_swr_clk,
> + wsa2_swr_data, i2s2_data, i2s3_clk, i2s3_ws, i2s3_data,
> + ext_mclk1_c, ext_mclk1_b, ext_mclk1_a ]
> +
Skip blank line (confuses with a new property).
> + description:
> + Specify the alternative function to be configured for the specified
> + pins.
> +
> + drive-strength:
> + enum: [2, 4, 6, 8, 10, 12, 14, 16]
> + default: 2
> + description:
> + Selects the drive strength for the specified pins, in mA.
> +
> + slew-rate:
> + enum: [0, 1, 2, 3]
> + default: 0
> + description: |
> + 0: No adjustments
> + 1: Higher Slew rate (faster edges)
> + 2: Lower Slew rate (slower edges)
> + 3: Reserved (No adjustments)
> +
> + bias-pull-down: true
> +
> + bias-pull-up: true
> +
> + bias-disable: true
> +
> + output-high: true
> +
> + output-low: true
> +
> + required:
> + - pins
> + - function
> +
> + additionalProperties: false
> +
> +allOf:
> + - $ref: "pinctrl.yaml#"
Drop the quotes.
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - gpio-controller
> + - '#gpio-cells'
> + - gpio-ranges
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/sound/qcom,q6afe.h>
> + lpi_tlmm: pinctrl@33c0000 {
Drop the label, not used anywhere here.
> + compatible = "qcom,sc8280xp-lpass-lpi-pinctrl";
> + reg = <0x33c0000 0x20000>,
> + <0x3550000 0x10000>;
> + clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
> + <&q6afecc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
> + clock-names = "core", "audio";
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&lpi_tlmm 0 0 18>;
> + };
Best regards,
Krzysztof
