[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <0bbdb132-4cf4-4278-b887-28e06fa97b9f@linaro.org>
Date: Mon, 11 Mar 2024 15:29:34 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] arch: arm64: dts: sm8650-hdk: add support for the
Display Card overlay
On 03/03/2024 00:32, Vladimir Zapolskiy wrote:
> Hi Neil,
>
> On 2/23/24 10:52, Neil Armstrong wrote:
>> With the SM8650-HDK, a Display Card kit can be connected to provide
>> a VTDR6130 display with Goodix Berlin Touch controller.
>>
>> In order to route the DSI lanes to the connector for the Display
>> Card kit, a switch must be changed on the board.
>>
>> The HDMI nodes are disabled since the DSI lanes are shared with
>> the DSI to HDMI transceiver.
>>
>> Add support for this card as an overlay and apply it it at
>> build-time to the sm8650-hdk dtb.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> ---
>
> <snip>
>
>> + mdp_vsync_active: mdp-vsync-active-state {
>> + pins = "gpio86";
>> + function = "mdp_vsync";
>> + drive-strength = <2>;
>> + bias-pull-down;
>> + };
>> +
>> + mdp_vsync_suspend: mdp-vsync-suspend-state {
>> + pins = "gpio86";
>> + function = "mdp_vsync";
>> + drive-strength = <2>;
>> + bias-pull-down;
>> + };
>
> If you have a single pin configuration for active and suspend states,
> then likely you may have only one device tree node here.
>
> Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
>
> I don't add my Tested-by tag, since I don't get a panel working on 6.8.0-rc6,
> while in runtime MSM and DSI are enabled, the panel driver is not initialized:
>
> panel-visionox-vtdr6130 ae94000.dsi.0: Failed to initialize panel: -22
This is unrelated to to the HDK, it requires this:
https://lore.kernel.org/all/20240201-visionox-vtdr-prev-first-v2-1-32db52867624@quicinc.com/
that has been applied fr next release.
Thanks,
Neil
>
> --
> Best wishes,
> Vladimir
Powered by blists - more mailing lists