netdev - Re: [RFC PATCH 2/2] net: stmmac: dwmac-sun8i: Allow runtime AC200/AC300 phy selection

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Message-ID: <a2538232-be98-42ed-ae82-45e2fcff3368@lunn.ch>
Date: Mon, 26 May 2025 21:58:26 +0200
From: Andrew Lunn <andrew@...n.ch>
To: James Hilliard <james.hilliard1@...il.com>
Cc: "Russell King (Oracle)" <linux@...linux.org.uk>, netdev@...r.kernel.org,
	linux-sunxi@...ts.linux.dev, Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Yinggang Gu <guyinggang@...ngson.cn>,
	Huacai Chen <chenhuacai@...nel.org>,
	Yanteng Si <si.yanteng@...ux.dev>,
	Feiyang Chen <chenfeiyang@...ngson.cn>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Jinjie Ruan <ruanjinjie@...wei.com>,
	Paul Kocialkowski <paulk@...-base.io>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 2/2] net: stmmac: dwmac-sun8i: Allow runtime
 AC200/AC300 phy selection

> I'm currently doing most of the PHY initialization in u-boot to simplify testing
> of the efuse based PHY selection logic in the kernel. I'm sending this
> separately as a number of subsequent drivers for kernel side PHY
> initialization will be dependent upon specific PHY's being discovered at
> runtime via the ac300 efuse bit.

Do the different PHYs have different ID values in register 2 and 3?

	Andrew