linux-kernel - Re: [PATCH v4 1/4] ASoC: dt-bindings: move tas2563 from tas2562.yaml to tas2781.yaml

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Date: Wed, 3 Jan 2024 08:38:06 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Shenghao Ding <shenghao-ding@...com>, broonie@...nel.org,
 conor+dt@...nel.org
Cc: robh+dt@...nel.org, andriy.shevchenko@...ux.intel.com, kevin-lu@...com,
 baojun.xu@...com, devicetree@...r.kernel.org, lgirdwood@...il.com,
 perex@...ex.cz, pierre-louis.bossart@...ux.intel.com, 13916275206@....com,
 linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
 liam.r.girdwood@...el.com, soyer@....hu, tiwai@...e.de, peeyush@...com,
 navada@...com
Subject: Re: [PATCH v4 1/4] ASoC: dt-bindings: move tas2563 from tas2562.yaml
 to tas2781.yaml

On 28/12/2023 16:30, Shenghao Ding wrote:
> Move tas2563 from tas2562.yaml to tas2781.yaml to unbind tas2563 from
> tas2562 driver code and bind it to tas2781 driver code, because tas2563
> only work in bypass-DSP mode with tas2562 driver. In order to enable DSP
> mode for tas2563, it has been moved to tas2781 driver. As to the hardware
> part, such as register setting and DSP firmware, all these are stored in
> the binary firmware. What tas2781 drivder dooes is to parse the firmware
> and download it to the chip, then power on the chip. So, tas2781 driver
> can be resued as tas2563 driver. Only attention will be paid to
> downloading corresponding firmware.
> 
> Signed-off-by: Shenghao Ding <shenghao-ding@...com>
> 
> ---
> Change in v4:
>  - remove tas2563, which will be move to tas2781 driver.
>  - Add more comments on why to move tas2563 to tas2781 driver.
>  - Provide rationale in terms of bindings and hardware, not in terms of driver.
>    Or at least not only.
>  - Reorder chip, tas2563 is first, tas2781 is second.
>  - Add datasheet linkings.
>  - squash both tas2562 and tas2781 binding patches.
>  - Put allOf: to the end of the file, after required: block.
> ---
>  .../devicetree/bindings/sound/tas2562.yaml    |  2 -
>  .../devicetree/bindings/sound/ti,tas2781.yaml | 85 ++++++++++++++-----
>  2 files changed, 64 insertions(+), 23 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/tas2562.yaml b/Documentation/devicetree/bindings/sound/tas2562.yaml
> index f01c0dde0cf7..d28c102c0ce7 100644
> --- a/Documentation/devicetree/bindings/sound/tas2562.yaml
> +++ b/Documentation/devicetree/bindings/sound/tas2562.yaml
> @@ -18,7 +18,6 @@ description: |
>  
>    Specifications about the audio amplifier can be found at:
>      https://www.ti.com/lit/gpn/tas2562
> -    https://www.ti.com/lit/gpn/tas2563
>      https://www.ti.com/lit/gpn/tas2564
>      https://www.ti.com/lit/gpn/tas2110
>  
> @@ -29,7 +28,6 @@ properties:
>    compatible:
>      enum:
>        - ti,tas2562
> -      - ti,tas2563
>        - ti,tas2564
>        - ti,tas2110
>  
> diff --git a/Documentation/devicetree/bindings/sound/ti,tas2781.yaml b/Documentation/devicetree/bindings/sound/ti,tas2781.yaml
> index a69e6c223308..78d89008c36f 100644
> --- a/Documentation/devicetree/bindings/sound/ti,tas2781.yaml
> +++ b/Documentation/devicetree/bindings/sound/ti,tas2781.yaml
> @@ -5,36 +5,41 @@
>  $id: http://devicetree.org/schemas/sound/ti,tas2781.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: Texas Instruments TAS2781 SmartAMP
> +title: Texas Instruments TAS2563/TAS2781 SmartAMP
>  
>  maintainers:
>    - Shenghao Ding <shenghao-ding@...com>
>  
> -description:
> -  The TAS2781 is a mono, digital input Class-D audio amplifier
> -  optimized for efficiently driving high peak power into small
> -  loudspeakers. An integrated on-chip DSP supports Texas Instruments
> -  Smart Amp speaker protection algorithm. The integrated speaker
> -  voltage and current sense provides for real time
> +description: |
> +  The TAS2563/TAS2781 is a mono, digital input Class-D audio
> +  amplifier optimized for efficiently driving high peak power into
> +  small loudspeakers. An integrated on-chip DSP supports Texas
> +  Instruments Smart Amp speaker protection algorithm. The
> +  integrated speaker voltage and current sense provides for real time
>    monitoring of loudspeaker behavior.
>  
> -allOf:
> -  - $ref: dai-common.yaml#
> +  Specifications about the audio amplifier can be found at:
> +    https://www.ti.com/lit/gpn/tas2563
> +    https://www.ti.com/lit/gpn/tas2781
>  
>  properties:
>    compatible:
> -    enum:
> -      - ti,tas2781
> -
> -  reg:
> -    description:
> -      I2C address, in multiple tas2781s case, all the i2c address
> -      aggregate as one Audio Device to support multiple audio slots.
> -    maxItems: 8
> -    minItems: 1
> -    items:
> -      minimum: 0x38
> -      maximum: 0x3f
> +    description: |
> +      ti,tas2563: 6.1-W Boosted Class-D Audio Amplifier With Integrated
> +      DSP and IV Sense, 16/20/24/32bit stereo I2S or multichannel TDM.
> +
> +      ti,tas2781: 24-V Class-D Amplifier with Real Time Integrated Speaker
> +      Protection and Audio Processing, 16/20/24/32bit stereo I2S or
> +      multichannel TDM.
> +    oneOf:
> +      - items:
> +          - enum:
> +              - ti,tas2563
> +          - const: ti,tas2781
> +      - enum:
> +          - ti,tas2781
> +
> +  reg: true

min/maxItems must stay here

I already reminded this in v3.


Best regards,
Krzysztof