linux-kernel - Re: [PATCH v3 1/3] arm64: dts: rockchip: disable display subsystem for Radxa E52C

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Message-Id: <20250928070008.74952-1-amadeus@jmu.edu.cn>
Date: Sun, 28 Sep 2025 15:00:08 +0800
From: Chukun Pan <amadeus@....edu.cn>
To: heiko@...ech.de
Cc: amadeus@....edu.cn,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	krzk+dt@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	naoki@...xa.com,
	robh@...nel.org
Subject: Re: [PATCH v3 1/3] arm64: dts: rockchip: disable display subsystem for Radxa E52C

Hi,

> I'm torn on the approach vs. just removing the error line in the driver.
>
> Returning -ENODEV from rockchip_drm_platform_of_probe() is correct,
> but the error log could just be a debug one instead.
>
> Because running a system without active vops is obviously fine.

We have disabled the display subsystem in the device tree for some
rk3328/rk3568 SBC. Not sure if drm allows silencing this log, I'll
try to send a patch.

Thanks,
Chukun