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Subject: Re: [RESEND PATCH] ARM: dts: keystone-k2g-evm: fix rgmii phy-mode for
 ksz9031 phy
To:     "arm@kernel.org" <arm@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Olof Johansson <olof@lixom.net>
Cc:     Grygorii Strashko <grygorii.strashko@ti.com>,
        Murali Karicheri <m-karicheri2@ti.com>,
        Santosh Shilimkar <ssantosh@kernel.org>,
        Sekhar Nori <nsekhar@ti.com>,
        linux-arm-kernel@lists.infradead.org,
        "David S . Miller" <davem@davemloft.net>,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        devicetree@vger.kernel.org,
        Oleksij Rempel <o.rempel@pengutronix.de>,
        Andrew Lunn <andrew@lunn.ch>,
        Philippe Schenker <philippe.schenker@toradex.com>
References: <20200724214221.28125-1-grygorii.strashko@ti.com>
From:   "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com>
Organization: Oracle Corporation
Message-ID: <a91d2bad-b794-fe07-679a-e5096aa5ace8@oracle.com>
Date:   Fri, 24 Jul 2020 14:55:19 -0700
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Hi Arnd, Olof,

On 7/24/20 2:42 PM, Grygorii Strashko wrote:
> Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the
> KSZ9031 PHY") the networking is broken on keystone-k2g-evm board.
> 
> The above board have phy-mode = "rgmii-id" and it is worked before because
> KSZ9031 PHY started with default RGMII internal delays configuration (TX
> off, RX on 1.2 ns) and MAC provided TX delay by default.
> After above commit, the KSZ9031 PHY starts handling phy mode properly and
> enables both RX and TX delays, as result networking is become broken.
> 
> Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous
> behavior.
> 
> Cc: Oleksij Rempel <o.rempel@pengutronix.de>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Philippe Schenker <philippe.schenker@toradex.com>
> Fixes: bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> ---
> Fix for one more broken TI board with KSZ9031 PHY.
Can you please apply this patch to your v5.8 fixes branch and send it 
upstream ? Without the fix K2G EVM board is broken with v5.8.

Am hoping you can pick this up with pull request since it just one
patch.

Regards,
Santosh