Re: [PATCH 4/5] arm64: dts: rockchip: Add DSI panel to RK3588 EVB1

[Chaoyi Chen <chaoyi.chen@rock-chips.com>]

Hi Sebastian,
On 11/9/2026 3:42 AM, Sebastian Reichel wrote:
> Hello Chaoyi,
> 
> On Sun, Nov 08, 2026 at 11:15:09AM +0800, Chaoyi Chen wrote:
>> Hi Sebastian,
>>
>> On 11/7/2026 5:57 AM, Sebastian Reichel wrote:
>>> The RK3588 EVB1 comes with a W552793DBA-V10 Touchscreen/Display
>>> combination. It contains a Wanchanglong W552793BAA panel and a
>>> Goodix GT1158 touchscreen. This adds the DT description of it.
>>> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
>>> ---
>>>  arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts | 90 ++++++++++++++++++++++++
>>>  1 file changed, 90 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
>>> index 6a95a8bb6fb8..327ca13b60f0 100644
>>> --- a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
>>> +++ b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
>>> @@ -204,6 +204,15 @@ vcc12v_dcin: regulator-vcc12v-dcin {
>>>  		regulator-max-microvolt = <12000000>;
>>>  	};
>>>  
>>
>> I seem unable to apply the patch to the latest linux-next tree.
>>
>> So I tried to resolve the conflict manually, but the actual
>> test screen did not display. I will look into this further.
> 
> Strange. The base of this series was Heiko's for-next tree from
> Friday. No RK3588 EVB1 patches landed since then:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/commit/?h=for-next&id=cabb6811c38a46337d5f4252b4dc390f9296856c
> 
> If your board uses the original Rockchip bootloader, which shows a
> Rockchip logo on the panel, you also need Cristian's latest YUV420
> patches that reset VOP2 at probe time avoiding some issues with the
> pre-initialized panel as a side effect. Those were recently applied
> by Heiko to the DRM tree, so testing on linux-next is indeed
> sensible.
> 

Hmm, the newest linux-next tag which I used is next-20261105, and Heiko's 
tree last updated date is1106. I'll give it a try on Heiko's tree.

And I'm using mainline U-Boot, which obtained from the latest nightly build:
https://gitlab.collabora.com/hardware-enablement/rockchip-3588/debian-image-recipes.

The backlight working correctly, and the DCS command has been sent, but nothing display.
Perhaps I should look elsewhere.

> Greetings,
> 
> -- Sebastian

-- 
Best, 
Chaoyi