linux-kernel - Re: [PATCH v6 08/10] ASoC: dt-bindings: Add SC7280 lpass cpu bindings

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Date:   Sun, 28 Nov 2021 10:53:37 -0600
From:   Rob Herring <robh@...nel.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, lgirdwood@...il.com,
        broonie@...nel.org, plai@...eaurora.org, bgoswami@...eaurora.org,
        perex@...ex.cz, tiwai@...e.com, srinivas.kandagatla@...aro.org,
        rohitkr@...eaurora.org, linux-arm-msm@...r.kernel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, swboyd@...omium.org,
        judyhsiao@...omium.org,
        Venkata Prasad Potturu <potturu@...eaurora.org>
Subject: Re: [PATCH v6 08/10] ASoC: dt-bindings: Add SC7280 lpass cpu bindings

On Fri, Nov 26, 2021 at 05:34:40PM +0530, Srinivasa Rao Mandadapu wrote:
> Add bindings for sc7280 lpass cpu driver which supports
> audio over i2s based speaker, soundwire based headset, msm dmics
> and HDMI Port.
> 
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
> Co-developed-by: Venkata Prasad Potturu <potturu@...eaurora.org>
> Signed-off-by: Venkata Prasad Potturu <potturu@...eaurora.org>
> ---
>  .../devicetree/bindings/sound/qcom,lpass-cpu.yaml  | 69 +++++++++++++++++++---
>  1 file changed, 61 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.yaml b/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.yaml
> index 1e23c0e..0f5a57c 100644
> --- a/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.yaml
> +++ b/Documentation/devicetree/bindings/sound/qcom,lpass-cpu.yaml
> @@ -22,35 +22,36 @@ properties:
>        - qcom,lpass-cpu
>        - qcom,apq8016-lpass-cpu
>        - qcom,sc7180-lpass-cpu
> +      - qcom,sc7280-lpass-cpu
>  
>    reg:
> -    maxItems: 2
> +    maxItems: 5
>      description: LPAIF core registers
>  
>    reg-names:
> -    maxItems: 2
> +    maxItems: 5
>  
>    clocks:
>      minItems: 3
> -    maxItems: 6
> +    maxItems: 7
>  
>    clock-names:
>      minItems: 3
> -    maxItems: 6
> +    maxItems: 7
>  
>    interrupts:
> -    maxItems: 2
> +    maxItems: 4
>      description: LPAIF DMA buffer interrupt
>  
>    interrupt-names:
> -    maxItems: 2
> +    maxItems: 4
>  
>    qcom,adsp:
>      $ref: /schemas/types.yaml#/definitions/phandle
>      description: Phandle for the audio DSP node
>  
>    iommus:
> -    maxItems: 2
> +    maxItems: 3
>      description: Phandle to apps_smmu node with sid mask
>  
>    power-domains:
> @@ -69,7 +70,7 @@ patternProperties:
>    "^dai-link@[0-9a-f]$":
>      type: object
>      description: |
> -      LPASS CPU dai node for each I2S device. Bindings of each node
> +      LPASS CPU dai node for each I2S device or Soundwire device. Bindings of each node
>        depends on the specific driver providing the functionality and
>        properties.
>      properties:
> @@ -174,6 +175,58 @@ allOf:
>          - iommus
>          - power-domains
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,sc7280-lpass-cpu
> +
> +    then:
> +      properties:
> +        clock-names:
> +          oneOf:
> +            - items:   #for I2S
> +                - const: lpass_aon_cc_audio_hm_h_clk
> +                - const: lpass_core_cc_sysnoc_mport_core_clk
> +                - const: lpass_core_cc_ext_if1_ibit_clk
> +            - items:   #for Soundwire
> +                - const: lpass_aon_cc_audio_hm_h_clk
> +                - const: lpass_audio_cc_codec_mem0_clk
> +                - const: lpass_audio_cc_codec_mem1_clk
> +                - const: lpass_audio_cc_codec_mem2_clk
> +            - items:   #for HDMI
> +                - const: lpass_aon_cc_audio_hm_h_clk

'lpass_' and '_clk' are redundant.

> +
> +        reg-names:
> +          anyOf:
> +            - items:   #for I2S
> +                - const: lpass-lpaif
> +            - items:   #for I2S and HDMI
> +                - const: lpass-hdmiif
> +                - const: lpass-lpaif

Doesn't this apply to other SoCs?

> +            - items:   #for I2S, soundwire and HDMI
> +                - const: lpass-cdc-lpm
> +                - const: lpass-rxtx-lpaif
> +                - const: lpass-va-lpaif
> +                - const: lpass-hdmiif
> +                - const: lpass-lpaif

'lpass-' is redundant too, but consistency across SoCs is better.

hdmiif and lpaif should be first. (Add new resources on the end.)

> +        interrupt-names:
> +          anyOf:
> +            - items:   #for I2S
> +                - const: lpass-irq-lpaif
> +            - items:   #for I2S and HDMI
> +                - const: lpass-irq-lpaif
> +                - const: lpass-irq-hdmi
> +            - items:   #for I2S, soundwire and HDMI
> +                - const: lpass-irq-lpaif
> +                - const: lpass-irq-vaif
> +                - const: lpass-irq-rxtxif
> +                - const: lpass-irq-hdmi

Again, add new entries to the end.

> +
> +      required:
> +        - iommus
> +        - power-domains
> +
>  examples:
>    - |
>      #include <dt-bindings/sound/sc7180-lpass.h>
> -- 
> Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
> is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
> 
>