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Message-ID: <583981f9-b2ed-45fe-a327-4fd8218dc23e@lunn.ch>
Date: Mon, 8 Sep 2025 18:54:15 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Lorenzo Bianconi <lorenzo@...nel.org>, Sean Wang <sean.wang@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Benjamin Larsson <benjamin.larsson@...exis.eu>,
	linux-mediatek@...ts.infradead.org, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] pinctrl: airoha: fix wrong MDIO function bitmaks

On Mon, Sep 08, 2025 at 01:37:19PM +0200, Christian Marangi wrote:
> With further testing with an attached Aeonsemi it was discovered that
> the pinctrl MDIO function applied the wrong bitmask. The error was
> probably caused by the confusing documentation related to these bits.
> 
> Inspecting what the bootloader actually configure, the SGMII_MDIO_MODE
> is never actually set but instead it's set force enable to the 2 GPIO
> (gpio 1-2) for MDC and MDIO pin.

Is the MDIO bus implemented using the GPIO bitbanging driver?

	Andrew

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