linux-kernel - Re: [PATCH] arm64: dts: rockchip: fix PHY handling for ROCK 4D

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Message-ID: <175213962000.1887379.7289714383827183619.b4-ty@sntech.de>
Date: Thu, 10 Jul 2025 11:27:18 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: Heiko Stuebner <heiko@...ech.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: rockchip: fix PHY handling for ROCK 4D


On Fri, 04 Jul 2025 19:31:59 +0200, Sebastian Reichel wrote:
> Old revisions of the ROCK 4D board have a dedicated crystal to
> supply the RTL8211F PHY's 25MHz clock input. At least some newer
> revisions instead use REFCLKO25M_GMAC0_OUT. The DT already has
> this half-prepared, but there are some issues:
> 
> 1. The DT relies on auto-selecting the right PHY driver, which
>    requires that it works good enough to read the ID registers.
>    This does not work without the clock, which is handled by
>    the PHY driver. By updating the compatible to contain the
>    RTL8211F IDs, so that the operating system can choose the
>    right PHY driver without relying on a pre-powered PHY.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: rockchip: fix PHY handling for ROCK 4D
      commit: cd803da7c033e376a66793a43ee98e136bc6cc25

Best regards,
-- 
Heiko Stuebner <heiko@...ech.de>