linux-kernel - Re: [PATCH v2 4/4] arm64: dts: rockchip: Enable HDMI1 on rock-5b

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Message-ID: <jmb6f6beax3rmyutbkyl2hthlzzaguh2qlfdeibrbjdu44y6ea@rbuf6yjoo4v4>
Date: Mon, 31 Mar 2025 22:30:36 +0200
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Mark Brown <broonie@...nel.org>
Cc: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>, 
	Sandy Huang <hjc@...k-chips.com>, Heiko Stübner <heiko@...ech.de>, 
	Andy Yan <andy.yan@...k-chips.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Alexandre ARNOUD <aarnoud@...com>, kernel@...labora.com, dri-devel@...ts.freedesktop.org, 
	linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	devicetree@...r.kernel.org, Aishwarya.TCV@....com
Subject: Re: [PATCH v2 4/4] arm64: dts: rockchip: Enable HDMI1 on rock-5b

Hi,

On Mon, Mar 31, 2025 at 08:01:34PM +0100, Mark Brown wrote:
> On Wed, Dec 11, 2024 at 01:06:17AM +0200, Cristian Ciocaltea wrote:
> > Add the necessary DT changes to enable the second HDMI output port on
> > Radxa ROCK 5B.
> > 
> > While at it, switch the position of &vop_mmu and @vop to maintain the
> > alphabetical order.
> 
> We're seeing failures in the Arm lab the IGT tests on this board in
> Linus' tree which bisect to 77cea7ca1368 which is this patch.
> core_getversion fails:
>
>[...]
>
> The board is running fine in -next so hopefully there's a fix already
> there which will make it's way to Linus' tree during the merge window.
> We're also seeing something broken with the HDMI audio devices, but I
> didn't look into that.

I guess the root cause for the problem is, that the pull request for
the PHY subsystem [0] has not yet been merged. It contains [1]
("phy: phy-rockchip-samsung-hdptx: Don't use dt aliases to determine phy-id"),
a fix for properly handling the second RK3588 HDMI PHY instance.

[0] https://lore.kernel.org/all/Z+pFou7KOQZJ1iy4@vaman/
[1] https://web.git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git/commit/?h=next&id=f08d1c08563846f9be79a4859e912c8795d690fd

Greetings,

-- Sebastian