linux-kernel - Re: [PATCH v2] net: netsec: Ignore 'phy-mode' on SynQuacer in DT mode

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Message-ID: <0a208142-1c71-f997-4d77-961d3bc91343@gmail.com>
Date:   Fri, 28 Jul 2023 15:54:08 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Mark Brown <broonie@...nel.org>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Ard Biesheuvel <ardb@...nel.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: netsec: Ignore 'phy-mode' on SynQuacer in DT mode

On 7/28/23 15:51, Mark Brown wrote:
> As documented in acd7aaf51b20 ("netsec: ignore 'phy-mode' device
> property on ACPI systems") the SocioNext SynQuacer platform ships with
> firmware defining the PHY mode as RGMII even though the physical
> configuration of the PHY is for TX and RX commits. 

Did you mean to write "delays" instead of "commits" here?

> Since
> bbc4d71d63549bc ("net: phy: realtek: fix rtl8211e rx/tx delay config")
> this has caused misconfiguration of the PHY, rendering the network
> unusable.
> 
> This was worked around for ACPI by ignoring the phy-mode property but
> the system is also used with DT.  For DT instead if we're running on a
> SynQuacer force a working PHY mode, as well as the standard EDK2
> firmware with DT there are also some of these systems that use u-boot
> and might not initialise the PHY if not netbooting.  Newer firmware
> imagaes for at least EDK2 are available from Linaro so print a warning
> when doing this.
> 
> Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver")
> Signed-off-by: Mark Brown <broonie@...nel.org>
-- 
Florian