linux-kernel - Re: [PATCH v11 4/7] dt-bindings: sun6i-dsi: Add VCC-DSI supply property

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Message-ID: <20191003114733.56mlar666l76uoyb@gilmour>
Date:   Thu, 3 Oct 2019 13:47:33 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, michael@...rulasolutions.com,
        Icenowy Zheng <icenowy@...c.io>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v11 4/7] dt-bindings: sun6i-dsi: Add VCC-DSI supply
 property

On Thu, Oct 03, 2019 at 12:15:24PM +0530, Jagan Teki wrote:
> Allwinner MIPI DSI controllers are supplied with SoC DSI
> power rails via VCC-DSI pin.
>
> Some board still work without supplying this but give more
> faith on datasheet and hardware schematics and document this
> supply property in required property list.
>
> Reviewed-by: Rob Herring <robh@...nel.org>
> Tested-by: Merlijn Wajer <merlijn@...zup.org>
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
>  .../bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml         | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> index 47950fced28d..9d4c25b104f6 100644
> --- a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> @@ -36,6 +36,9 @@ properties:
>    resets:
>      maxItems: 1
>
> +  vcc-dsi-supply:
> +    description: VCC-DSI power supply of the DSI encoder
> +

The driver treats it as mandatory, so I've added it to the binding, as
suggested by the commit log.

Maxime

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