linux-kernel - Re: [PATCH net-next v12 3/3] net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family

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Message-ID: <aYxYRZZkVFz2jHaF@shell.armlinux.org.uk>
Date: Wed, 11 Feb 2026 10:21:57 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Joey Lu <a0987203069@...il.com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, mcoquelin.stm32@...il.com,
	richardcochran@...il.com, alexandre.torgue@...s.st.com,
	joabreu@...opsys.com, ychuang3@...oton.com, schung@...oton.com,
	yclu4@...oton.com, peppe.cavallaro@...com,
	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	openbmc@...ts.ozlabs.org, linux-stm32@...md-mailman.stormreply.com,
	Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH net-next v12 3/3] net: stmmac: dwmac-nuvoton: Add dwmac
 glue for Nuvoton MA35 family

On Wed, Feb 11, 2026 at 05:52:21PM +0800, Joey Lu wrote:
> > Is this register preserved over suspend/resume ?
> 
> It is not preserved by the GMAC suspend/resume flow and therefore needs to
> be treated as a system register rather than a GMAC local context.

That is another reason to use .set_phy_intf_sel as that will be called
just before GMAC soft-reset in the .ndo_open() and resume paths.

-- 
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