linux-kernel - Re: [RFC PATCH 1/8] drm/panel: nv3052c: Document known register names

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Date:   Thu, 14 Sep 2023 13:27:00 -0700
From:   Jessica Zhang <quic_jesszhan@...cinc.com>
To:     John Watts <contact@...kia.org>
CC:     <dri-devel@...ts.freedesktop.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, Sam Ravnborg <sam@...nborg.org>,
        Chris Morgan <macromorgan@...mail.com>,
        <linux-kernel@...r.kernel.org>, Jagan Teki <jagan@...eble.ai>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>
Subject: Re: [RFC PATCH 1/8] drm/panel: nv3052c: Document known register names



On 9/13/2023 9:12 PM, John Watts wrote:
> On Wed, Sep 13, 2023 at 02:43:43PM -0700, Jessica Zhang wrote:
>> Hi John,
>>
>> Just curious, what do you mean by these registers being mostly unknown?
>>
>> I do see them specified in the online specs -- some even seem to map to
>> existing MIPI_DCS_* enums (ex. 0x01 to MIPI_DCS_SOFT_RESET, and 0x04 to
>> MIPI_DCS_GET_DISPLAY_ID).
>>
>> Thanks,
>>
>> Jessica Zhang
> 
> Hi Jessica,
> 
> Unfortunately these registers are not MIPI ones, but on a separate page of
> registers. So page 2 register 1 isn't MIPI_DCS_SOFT_RESET, that is page 0
> register 1.

Got it -- thanks for the explanation.

In that case,

Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>

Thanks,

Jessica Zhang

> 
> John.