linux-kernel - Re: [PATCH 02/14] dt-bindings: media: sun4i-csi: Add compatible for CSI0 on R40

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Message-ID: <20191216103009.knlby7rxf5pghf5q@gilmour.lan>
Date:   Mon, 16 Dec 2019 11:30:09 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Chen-Yu Tsai <wens@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chen-Yu Tsai <wens@...e.org>
Subject: Re: [PATCH 02/14] dt-bindings: media: sun4i-csi: Add compatible for
 CSI0 on R40

On Mon, Dec 16, 2019 at 12:59:12AM +0800, Chen-Yu Tsai wrote:
> From: Chen-Yu Tsai <wens@...e.org>
>
> The CSI0 block in the Allwinner R40 SoC looks to be the same as the one
> in the A20. The register maps line up, and they support the same
> features. The R40 appears to support BT.1120 based on the feature
> overview, but it is not mentioned anywhere else. Also like the A20, the
> ISP is not mentioned, but the CSI special clock needs to be enabled for
> the hardware to function. The manual does state that the CSI special
> clock is the TOP clock for all CSI hardware, but currently no hardware
> exists for us to test if CSI1 also depends on it or not.
>
> Add a compatible string for the CSI0 block in the R40, with the A20
> compatible string as a fallback.
>
Acked-by: Maxime Ripard <mripard@...nel.org>

Maxime

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