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

From: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
To: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
	bgoswami@codeaurora.org,
	Venkata Prasad Potturu <potturu@codeaurora.org>,
	linux-arm-msm@vger.kernel.org, plai@codeaurora.org,
	tiwai@suse.com, agross@kernel.org, swboyd@chromium.org,
	lgirdwood@gmail.com, broonie@kernel.org, rohitkr@codeaurora.org,
	bjorn.andersson@linaro.org, judyhsiao@chromium.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 08/10] ASoC: dt-bindings: Add SC7280 lpass cpu bindings
Date: Mon, 29 Nov 2021 16:07:31 +0530	[thread overview]
Message-ID: <9c21dc98-6bbb-bf33-361c-a768d185f07a@codeaurora.org> (raw)
In-Reply-To: <YaO0ER2pNIQrvlxM@robh.at.kernel.org>


On 11/28/2021 10:23 PM, Rob Herring wrote:
Thanks for Your Time Rob!!!
> 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@codeaurora.org>
>> Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org>
>> Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.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.
Yes. but these clock names are defined by HW design team. clock drivers 
fallowed the same,  hence in audio drivers.
>
>> +
>> +        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.)
Okay.. order is maintained as per register addresses. if it's okay, even 
address range is out of order, will change accordingly.
>
>> +        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.
  Replied above for the same.
>> +
>> +      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.
>>
>>
-- 
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.