linux-kernel - Re: [PATCH 2/4] media: dt-bindings: cedrus: Make allwinner,sram optional

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Date:   Thu, 5 Jan 2023 10:57:27 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Conor Dooley <conor@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maxime Ripard <mripard@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH 2/4] media: dt-bindings: cedrus: Make allwinner,sram
 optional

Hi Samuel,

On Sat 31 Dec 22, 10:46, Samuel Holland wrote:
> Allwinner SoCs can remap some bits of peripheral SRAM to a contiguous
> range of addresses for use by early boot software. Usually the video
> engine's SRAM is used for this purpose, so its mapping must be switched
> back before the hardware can be used.
> 
> However, the D1 and related SoCs use the DSP SRAM for this purpose. As a
> result, the video engine SRAM is not switchable, and there is no need
> for an allwinner,sram reference in the devicetree.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>

Reviewed-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>

Cheers,

Paul

> ---
> 
>  .../bindings/media/allwinner,sun4i-a10-video-engine.yaml         | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml b/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml
> index d5be7f604e8c..74363b242fff 100644
> --- a/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml
> +++ b/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml
> @@ -73,7 +73,6 @@ required:
>    - clocks
>    - clock-names
>    - resets
> -  - allwinner,sram
>  
>  additionalProperties: false
>  
> -- 
> 2.37.4
> 

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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