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Date: Thu, 16 Dec 2021 08:52:16 +0100 From: Francesco Dolcini <francesco.dolcini@...adex.com> To: Joakim Zhang <qiangqing.zhang@....com> Cc: Francesco Dolcini <francesco.dolcini@...adex.com>, Andrew Lunn <andrew@...n.ch>, "Russell King (Oracle)" <linux@...linux.org.uk>, Philippe Schenker <philippe.schenker@...adex.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "David S . Miller" <davem@...emloft.net>, Heiner Kallweit <hkallweit1@...il.com>, Jakub Kicinski <kuba@...nel.org>, Fabio Estevam <festevam@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH net-next 3/3] net: fec: reset phy on resume after power-up On Thu, Dec 16, 2021 at 04:52:39AM +0000, Joakim Zhang wrote: > As I can see, when system suspended, PHY is totally powered down, > since you disable the regulator. At this situation, if you > assert reset signal, you mean it will increase the power > consumption? PHY is totally powered down, why assert reset > signal still affect PHY? In general there are *other* use cases in which the PHY is powered in suspend. We should not create a regression there. Francesco
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