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From: "Heiko Stübner" <heiko@sntech.de>
To: Shawn Lin <shawn.lin@rock-chips.com>,
	Damon Ding <damon.ding@rock-chips.com>,
	Vicente Bergas <vicencb@gmail.com>
Cc: Sandy Huang <hjc@rock-chips.com>,
	Andy Yan <andy.yan@rock-chips.com>,
	"open list:ARM/Rockchip SoC..."
	<linux-rockchip@lists.infradead.org>
Subject: Re: [REGRESSION][BISECTED] No display on rk3399-gru-kevin
Date: Wed, 17 Jun 2026 10:45:54 +0200	[thread overview]
Message-ID: <14488973.RDIVbhacDa@diego> (raw)
In-Reply-To: <CAAMcf8CXfvzvEUyoASmp=6efRDNszyPJuFg0OU63Z7gT+oVQ8A@mail.gmail.com>

Hi Vicente,

Am Mittwoch, 17. Juni 2026, 01:05:27 Mitteleuropäische Sommerzeit schrieb Vicente Bergas:
> Hello,
> there are two issues that result on a black screen on the rk3399-gru-kevin.
> 
> The first one is due to:
> c8079f83e0bf312645050c17d9c87deb707369c1
> gpio: rockchip: convert to dynamic GPIO base allocation

can you check that your kernel contains
"gpio: rockchip: Fix GPIO regression after conversion to dynamic base allocation"
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5cd9c6d332f46d1de8b68117fe2a3f1b08ee80ff


> Reverting this does not fix the problem as there is a second one:
> 51eb548ade20158b4f4f8693a95b1f31a2480e8e
> drm/bridge: analogix_dp: Apply DP helper API drm_dp_channel_eq_ok()
> 
> That second one depends on:
> d84b087c7662dd65cd51b228219987c31b1cee02
> drm/bridge: analogix_dp: Apply DP helper APIs to get adjusted voltages
> and pre-emphasises
> 
> Reverting all three commits from v7.1 make the display work again.
> 
> Please, can this be resolved?

and as Damon wrote, please provide logs, so we can see the actual problem


Thanks
Heiko



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      parent reply	other threads:[~2026-06-17  8:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-16 23:05 [REGRESSION][BISECTED] No display on rk3399-gru-kevin Vicente Bergas
2026-06-17  7:30 ` Damon Ding
2026-06-17  8:45 ` Heiko Stübner [this message]

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