linux-kernel - Re:Re: [PATCH 0/6] Add support for RK3588 DisplayPort Controller

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Message-ID: <25401bfa.291d.19564244e54.Coremail.andyshrk@163.com>
Date: Wed, 5 Mar 2025 10:30:55 +0800 (CST)
From: "Andy Yan" <andyshrk@....com>
To: "Piotr Oniszczuk" <piotr.oniszczuk@...il.com>
Cc: heiko@...ech.de, neil.armstrong@...aro.org,
	sebastian.reichel@...labora.com, devicetree@...r.kernel.org,
	hjc@...k-chips.com, mripard@...nel.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org, yubing.zhang@...k-chips.com,
	dri-devel@...ts.freedesktop.org,
	"Andy Yan" <andy.yan@...k-chips.com>, krzk+dt@...nel.org,
	robh@...nel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re:Re: [PATCH 0/6] Add support for RK3588 DisplayPort Controller


Hi Piotr,

在 2025-03-04 21:12:50，"Piotr Oniszczuk" <piotr.oniszczuk@...il.com> 写道：
>
>
>> Wiadomość napisana przez Andy Yan <andyshrk@....com> w dniu 1 mar 2025, o godz. 13:24:
>> 
>> 
>> Hi Piotr,
>> 
>>> 
>>> is it worth to play with this or it is too early?
>> 
>> I think you could give it a try if it using the Standard DP（non-ALT mode） port for output. 
>> Since I don't currently have a development board with DP1 output available, I haven't been
>> able to test it yet. As for the Type-C Alternate Mode output, some patches are still required 
>> I'll  send it with V2 tomorrow or next week.
>> Feel free to let me know if If you encounter any issues。
>> 
>
>Andy,
>I added dp1 enablement in rock5 itx like this: https://gist.github.com/warpme/bddf75912193f57724c49216d5d85d4a
>Unfortunately it not works.
>For /sys/kernel/debug/dri/0/state - pls see above link…
>I’m not sure: do i missed something in dt or rather issue issue  is in dp code...

I only see the HDMI connector from your dri/state ; so it appears the DP driver hasn't been successfully
initialized（I think kernel dmesg can tell that）. 
Have you enabled CONFIG_ROCKCHIP_DW_DP ? This is needed.


>
>FYI: schematic: https://dl.radxa.com/rock5/5itx/v1110/radxa_rock_5itx_v1110_schematic.pdf
>
>
>