linux-kernel - Re: [PATCH v3] arm64: dts: freescale: imx93-phycore-som: Delay the phy reset by a gpio

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Message-ID: <aKU0lPi485xA5SS9@dragon>
Date: Wed, 20 Aug 2025 10:36:04 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Christoph Stoidner <c.stoidner@...tec.de>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, upstream@...ts.phytec.de
Subject: Re: [PATCH v3] arm64: dts: freescale: imx93-phycore-som: Delay the
 phy reset by a gpio

On Sat, May 24, 2025 at 01:23:15PM +0200, Christoph Stoidner wrote:
> According to the datasheet the phy needs to be held in reset until the
> reference clock got stable. Even though no issue was observed, fix this
> as the software should always comply with the specification.
> 
> Use gpio4 23, which is connected to the phy reset pin. On the same pin
> RX_ER was used before, but this signal is optional and can be dropped.
> 
> Note: This comes into effect with the phyCOREs SOM hardware revision 4.
> In revisions before, this gpio is not connected, and the phy reset is
> managed with the global hardware reset circuit.
> 
> Signed-off-by: Christoph Stoidner <c.stoidner@...tec.de>

Applied, thanks!