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

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Message-Id: <20250811130108.462673-1-amadeus@jmu.edu.cn>
Date: Mon, 11 Aug 2025 21:01:08 +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 1/3] arm64: dts: rockchip: disable display subsystem for Radxa E52C

Hi,

> What actual problem does this fix?
>
> For example we also enable on-soc iommus all the time, because they're
> on the soc and don't need board-level properties.
>
> The "display-subsystem" without users looks mostly in the same spot.
>
> So I do expect a description of what problem gets fixed that this needs
> to be disabled.

Disable the display-subsystem to remove this error log:
[    1.382440] rockchip-drm display-subsystem: [drm:0xffffa3985873555c] *ERROR* No available vop found for display-subsystem.

I will improve the commit message in v2. Do I need to remove the Fixes tag?

Thanks,
Chukun

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