linux-kernel - Re: [PATCH v3 1/2] dt-bindings: display: bridge: Add bindings for SN65DSI83/84/85

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Message-ID: <CAMty3ZAgKPXpkiWuG3cGFs4sZPd182hBNaTbveL9USLj8o=ZxQ@mail.gmail.com>
Date:   Mon, 15 Feb 2021 16:55:36 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Sam Ravnborg <sam@...nborg.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-amarula <linux-amarula@...rulasolutions.com>,
        Marek Vasut <marex@...x.de>
Subject: Re: [PATCH v3 1/2] dt-bindings: display: bridge: Add bindings for SN65DSI83/84/85

On Mon, Feb 15, 2021 at 2:32 PM Neil Armstrong <narmstrong@...libre.com> wrote:
>
> Hi,
>
> On 14/02/2021 18:44, Jagan Teki wrote:
> > SN65DSI83/84/85 devices are MIPI DSI to LVDS based bridge
> > controller IC's from Texas Instruments.
> >
> > SN65DSI83 - Single Channel DSI to Single-link LVDS bridge
> > SN65DSI84 - Single Channel DSI to Dual-link LVDS bridge
> > SN65DSI85 - Dual Channel DSI to Dual-link LVDS bridge
> >
> > Right now the bridge driver is supporting Channel A with single
> > link, so dt-bindings documented according to it.
>
> Shouldn't it describe Dual-link LVDS already for SN65DSI84/85 and Dual Channel DSI for SN65DSI85 even if not implemented in the driver ?

Patch documented only Single link LVDS as it only supported by driver.
Single link LVDS with Channel A configuration is common across all 3
variant chips. I have SN65DSI84 with Single link LVDS which is routed
in Channel A. Idea is to go with Single link and add double link later
and document the same.

Jagan.