From: Michael Walle <michael@walle.cc>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrew Lunn <andrew@lunn.ch>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Subject: Re: [PATCH net-next 7/9] net: phy: icplus: select page before writing control register
Date: Wed, 10 Feb 2021 11:38:18 +0100 [thread overview]
Message-ID: <d35f726f82c6c743519f3d8a36037dfa@walle.cc> (raw)
In-Reply-To: <20210210103059.GR1463@shell.armlinux.org.uk>
Am 2021-02-10 11:30, schrieb Russell King - ARM Linux admin:
> On Wed, Feb 10, 2021 at 08:03:07AM +0100, Heiner Kallweit wrote:
>> On 09.02.2021 17:40, Michael Walle wrote:
>> > +out:
>> > + return phy_restore_page(phydev, oldpage, err);
>>
>> If a random page was set before entering config_init, do we actually
>> want
>> to restore it? Or wouldn't it be better to set the default page as
>> part
>> of initialization?
>
> I think you've missed asking one key question: does the paging on this
> PHY affect the standardised registers at 0..15 inclusive, or does it
> only affect registers 16..31?
For this PHY it affects only registers >=16. But that doesn't invaldiate
the point that for other PHYs this might affect all regsisters. Eg. ones
where you could select between fiber and copper pages, right?
> If it doesn't affect the standardised registers, then the genphy_*
> functions don't care which page is selected.
--
-michael
next prev parent reply other threads:[~2021-02-10 10:42 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 16:40 [PATCH net-next 0/9] net: phy: icplus: cleanups and new features Michael Walle
2021-02-09 16:40 ` [PATCH net-next 1/9] net: phy: icplus: use PHY_ID_MATCH_MODEL() macro Michael Walle
2021-02-10 1:55 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 2/9] net: phy: icplus: use PHY_ID_MATCH_EXACT() for IP101A/G Michael Walle
2021-02-10 1:57 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 3/9] net: phy: icplus: drop address operator for functions Michael Walle
2021-02-10 1:57 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 4/9] net: phy: icplus: use the .soft_reset() of the phy-core Michael Walle
2021-02-10 2:02 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 5/9] net: phy: icplus: add IP101A/IP101G model detection Michael Walle
2021-02-09 20:03 ` Heiner Kallweit
2021-02-09 16:40 ` [PATCH net-next 6/9] net: phy: icplus: don't set APS_EN bit on IP101G Michael Walle
2021-02-10 2:04 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 7/9] net: phy: icplus: select page before writing control register Michael Walle
2021-02-10 2:07 ` Andrew Lunn
2021-02-10 7:03 ` Heiner Kallweit
2021-02-10 8:25 ` Michael Walle
2021-02-10 9:03 ` Heiner Kallweit
2021-02-10 9:14 ` Michael Walle
2021-02-10 10:30 ` Russell King - ARM Linux admin
2021-02-10 10:38 ` Michael Walle [this message]
2021-02-10 10:49 ` Russell King - ARM Linux admin
2021-02-10 11:14 ` Michael Walle
2021-02-10 11:48 ` Russell King - ARM Linux admin
2021-02-10 12:17 ` Michael Walle
2021-02-10 12:26 ` Heiner Kallweit
2021-02-10 20:27 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 8/9] net: phy: icplus: add PHY counter for IP101G Michael Walle
2021-02-10 2:10 ` Andrew Lunn
2021-02-09 16:40 ` [PATCH net-next 9/9] net: phy: icplus: add MDI/MDIX support for IP101A/G Michael Walle
2021-02-10 2:12 ` Andrew Lunn
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