From: Heiner Kallweit <hkallweit1@gmail.com>
To: Claudiu.Beznea@microchip.com, linux@armlinux.org.uk
Cc: andrew@lunn.ch, davem@davemloft.net, kuba@kernel.org,
rjw@rjwysocki.net, pavel@ucw.cz, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Subject: Re: [PATCH] net: phy: micrel: reconfigure the phy on resume
Date: Thu, 14 Jan 2021 12:05:21 +0100 [thread overview]
Message-ID: <56366231-4a1f-48c3-bc29-6421ed834bdf@gmail.com> (raw)
In-Reply-To: <fe4c31a0-b807-0eb2-1223-c07d7580e1fc@microchip.com>
On 14.01.2021 11:41, Claudiu.Beznea@microchip.com wrote:
>
>
> On 14.01.2021 12:25, Russell King - ARM Linux admin wrote:
>>
>> As I've said, if phylib/PHY driver is not restoring the state of the
>> PHY on resume from suspend-to-ram, then that's an issue with phylib
>> and/or the phy driver.
>
> In the patch I proposed in this thread the restoring is done in PHY driver.
> Do you think I should continue the investigation and check if something
> should be done from the phylib itself?
>
It was the right move to approach the PM maintainers to clarify whether
the resume PM callback has to assume that power had been cut off and
it has to completely reconfigure the device. If they confirm this
understanding, then:
- the general question remains why there's separate resume and restore
callbacks, and what restore is supposed to do that resume doesn't
have to do
- it should be sufficient to use mdio_bus_phy_restore also as resume
callback (instead of changing each and every PHY driver's resume),
because we can expect that somebody cutting off power to the PHY
properly suspends the MDIO bus before
> Thank you,
> Claudiu Beznea
>
>>
>> --
>> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
>> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2021-01-14 11:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 15:45 [PATCH] net: phy: micrel: reconfigure the phy on resume Claudiu Beznea
2021-01-08 16:10 ` Andrew Lunn
2021-01-08 16:31 ` Heiner Kallweit
2021-01-13 9:29 ` Claudiu.Beznea
2021-01-13 11:09 ` Heiner Kallweit
2021-01-13 12:36 ` Claudiu.Beznea
2021-01-13 21:34 ` Heiner Kallweit
2021-01-13 22:01 ` Russell King - ARM Linux admin
2021-01-14 7:30 ` Heiner Kallweit
2021-01-14 10:12 ` Claudiu.Beznea
2021-01-14 10:25 ` Russell King - ARM Linux admin
2021-01-14 10:41 ` Claudiu.Beznea
2021-01-14 11:05 ` Heiner Kallweit [this message]
2021-02-11 11:18 ` Claudiu.Beznea
2021-02-11 12:17 ` Pavel Machek
2021-02-11 12:36 ` Heiner Kallweit
2021-02-11 20:34 ` Pavel Machek
2021-01-13 23:28 ` Jakub Kicinski
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