linux-kernel - Re: [PATCH 2/2] stmmac: intel: Honor phy LED set by system firmware on a Dell hardware

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Message-ID: <20220113203523.310e13d3@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Thu, 13 Jan 2022 20:35:23 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     peppe.cavallaro@...com, alexandre.torgue@...s.st.com,
        joabreu@...opsys.com, "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Marek Behún <kabel@...nel.org>,
        Ivan Bornyakov <i.bornyakov@...rotek.ru>,
        Pali Rohár <pali@...nel.org>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] stmmac: intel: Honor phy LED set by system firmware
 on a Dell hardware

On Fri, 14 Jan 2022 12:07:54 +0800 Kai-Heng Feng wrote:
> BIOS on Dell Edge Gateway 3200 already makes its own phy LED setting, so
> instead of setting another value, keep it untouched and restore the saved
> value on system resume.
> 
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>

I defer to PHY experts for review. Coincidentally the first Marvell
flag appears dead, nobody sets it:

$ git grep MARVELL_PHY_M1145_FLAGS_RESISTANCE
drivers/net/phy/marvell.c:      if (phydev->dev_flags & MARVELL_PHY_M1145_FLAGS_RESISTANCE) {
include/linux/marvell_phy.h:#define MARVELL_PHY_M1145_FLAGS_RESISTANCE  0x00000001
$

unless it's read from DT under different name or something.


Once you get some reviews please wait for net-next to open:

http://vger.kernel.org/~davem/net-next.html

and repost. It should happen the week of Jan 24th. When you repost
please drop the first patch, I believe Russell does not like the BIT()
macro, his opinion overrides checkpatch.

Thanks!