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Date:   Mon, 24 Oct 2022 13:33:57 -0500
From:   Rob Herring <robh@kernel.org>
To:     Trevor Wu <trevor.wu@mediatek.com>
Cc:     broonie@kernel.org, tiwai@suse.com, matthias.bgg@gmail.com,
        p.zabel@pengutronix.de, angelogioacchino.delregno@collabora.com,
        Project_Global_Chrome_Upstream_Group@mediatek.com,
        alsa-devel@alsa-project.org, linux-mediatek@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org
Subject: Re: [PATCH v2 10/12] dt-bindings: mediatek: mt8188: add audio afe
 document
Message-ID: <20221024183357.GA2012388-robh@kernel.org>
References: <20221021082719.18325-1-trevor.wu@mediatek.com>
 <20221021082719.18325-11-trevor.wu@mediatek.com>
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On Fri, Oct 21, 2022 at 04:27:17PM +0800, Trevor Wu wrote:
> Add mt8188 audio afe document.
> 
> Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
> ---
>  .../bindings/sound/mt8188-afe-pcm.yaml        | 187 ++++++++++++++++++
>  1 file changed, 187 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/mt8188-afe-pcm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/mt8188-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mt8188-afe-pcm.yaml
> new file mode 100644
> index 000000000000..b2c548c31e4d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/mt8188-afe-pcm.yaml
> @@ -0,0 +1,187 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/mt8188-afe-pcm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek AFE PCM controller for mt8188
> +
> +maintainers:
> +  - Trevor Wu <trevor.wu@mediatek.com>
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt8188-afe
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  reset-names:
> +    const: audiosys
> +
> +  mediatek,topckgen:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: The phandle of the mediatek topckgen controller
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: 26M clock
> +      - description: audio pll1 clock
> +      - description: audio pll2 clock
> +      - description: clock divider for i2si1_mck
> +      - description: clock divider for i2si2_mck
> +      - description: clock divider for i2so1_mck
> +      - description: clock divider for i2so2_mck
> +      - description: clock divider for dptx_mck
> +      - description: a1sys hoping clock
> +      - description: audio intbus clock
> +      - description: audio hires clock
> +      - description: audio local bus clock
> +      - description: mux for dptx_mck
> +      - description: mux for i2so1_mck
> +      - description: mux for i2so2_mck
> +      - description: mux for i2si1_mck
> +      - description: mux for i2si2_mck
> +      - description: audio 26m clock
> +
> +  clock-names:
> +    items:
> +      - const: clk26m
> +      - const: apll1_ck
> +      - const: apll2_ck
> +      - const: apll12_div0
> +      - const: apll12_div1
> +      - const: apll12_div2
> +      - const: apll12_div3
> +      - const: apll12_div9
> +      - const: a1sys_hp_sel
> +      - const: aud_intbus_sel
> +      - const: audio_h_sel
> +      - const: audio_local_bus_sel
> +      - const: dptx_m_sel
> +      - const: i2so1_m_sel
> +      - const: i2so2_m_sel
> +      - const: i2si1_m_sel
> +      - const: i2si2_m_sel
> +      - const: adsp_audio_26m
> +
> +patternProperties:
> +  "^mediatek,etdm-in[1-2]-chn-disabled$":
> +    $ref: /schemas/types.yaml#/definitions/uint8-array
> +    maxItems: 16
> +    description: |

Don't need '|'

> +      Specify which input channel should be disabled, so the data of
> +      specified channel won't be outputted to memory.

I'm not clear on what each of the 16 entries represents. What's index 0, 
1, 2, etc.?

> +    items:
> +      enum: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]

maximum: 15


> +
> +  "^mediatek,etdm-in[1-2]-mclk-always-on-rate-hz$":
> +    description: Specify etdm in mclk output rate for always on case.
> +
> +  "^mediatek,etdm-out[1-3]-mclk-always-on-rate-hz$":
> +    description: Specify etdm out mclk output rate for always on case.
> +
> +  "^mediatek,etdm-in[1-2]-multi-pin-mode$":
> +    type: boolean
> +    description: if present, the etdm data mode is I2S.
> +
> +  "^mediatek,etdm-out[1-3]-multi-pin-mode$":
> +    type: boolean
> +    description: if present, the etdm data mode is I2S.
> +
> +  "^mediatek,etdm-in[1-2]-cowork-source$":
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      etdm modules can share the same external clock pin. Specify
> +      which etdm clock source is required by this etdm in moudule.
> +    enum:
> +      - 0 # etdm1_in
> +      - 1 # etdm2_in
> +      - 2 # etdm1_out
> +      - 3 # etdm2_out
> +
> +  "^mediatek,etdm-out[1-2]-cowork-source$":
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      etdm modules can share the same external clock pin. Specify
> +      which etdm clock source is required by this etdm out moudule.
> +    enum:
> +      - 0 # etdm1_in
> +      - 1 # etdm2_in
> +      - 2 # etdm1_out
> +      - 3 # etdm2_out
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - resets
> +  - reset-names
> +  - mediatek,topckgen
> +  - power-domains
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    afe: afe@10b10000 {
> +        compatible = "mediatek,mt8188-afe";
> +        reg = <0x10b10000 0x10000>;
> +        interrupts = <GIC_SPI 822 IRQ_TYPE_LEVEL_HIGH 0>;
> +        resets = <&watchdog 14>;
> +        reset-names = "audiosys";
> +        mediatek,topckgen = <&topckgen>;
> +        power-domains = <&spm 13>; //MT8188_POWER_DOMAIN_AUDIO
> +        clocks = <&clk26m>,
> +                 <&topckgen 72>, //CLK_TOP_APLL1
> +                 <&topckgen 73>, //CLK_TOP_APLL2
> +                 <&topckgen 186>, //CLK_TOP_APLL12_CK_DIV0
> +                 <&topckgen 187>, //CLK_TOP_APLL12_CK_DIV1
> +                 <&topckgen 188>, //CLK_TOP_APLL12_CK_DIV2
> +                 <&topckgen 189>, //CLK_TOP_APLL12_CK_DIV3
> +                 <&topckgen 191>, //CLK_TOP_APLL12_CK_DIV9
> +                 <&topckgen 83>, //CLK_TOP_A1SYS_HP
> +                 <&topckgen 31>, //CLK_TOP_AUD_INTBUS
> +                 <&topckgen 32>, //CLK_TOP_AUDIO_H
> +                 <&topckgen 69>, //CLK_TOP_AUDIO_LOCAL_BUS
> +                 <&topckgen 81>, //CLK_TOP_DPTX
> +                 <&topckgen 77>, //CLK_TOP_I2SO1
> +                 <&topckgen 78>, //CLK_TOP_I2SO2
> +                 <&topckgen 79>, //CLK_TOP_I2SI1
> +                 <&topckgen 80>, //CLK_TOP_I2SI2
> +                 <&adsp_audio26m 0>; //CLK_AUDIODSP_AUDIO26M
> +        clock-names = "clk26m",
> +                      "apll1_ck",
> +                      "apll2_ck",
> +                      "apll12_div0",
> +                      "apll12_div1",
> +                      "apll12_div2",
> +                      "apll12_div3",
> +                      "apll12_div9",
> +                      "a1sys_hp_sel",
> +                      "aud_intbus_sel",
> +                      "audio_h_sel",
> +                      "audio_local_bus_sel",
> +                      "dptx_m_sel",
> +                      "i2so1_m_sel",
> +                      "i2so2_m_sel",
> +                      "i2si1_m_sel",
> +                      "i2si2_m_sel",
> +                      "adsp_audio_26m";

It's good if the examples include optional properties so we at least 
have some validation the schema matches the DTS.

> +    };
> +
> +...
> -- 
> 2.18.0
> 
>