linux-kernel - Re: [PATCH v2] net: bcmgenet: Fix attaching to PYH failed on RPi 4B

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Date:   Thu, 24 Jun 2021 10:47:01 +0800
From:   Jian-Hong Pan <jhp@...lessos.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     patchwork-bot+netdevbpf@...nel.org,
        Stefan Wahren <stefan.wahren@...e.com>,
        Doug Berger <opendmb@...il.com>, Andrew Lunn <andrew@...n.ch>,
        bcm-kernel-feedback-list@...adcom.com,
        Linux Netdev List <netdev@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        linux@...lessos.org, linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] net: bcmgenet: Fix attaching to PYH failed on RPi 4B

Florian Fainelli <f.fainelli@...il.com> 於 2021年6月24日 週四 上午5:19寫道：
>
> On 6/23/21 1:50 PM, patchwork-bot+netdevbpf@...nel.org wrote:
> > Hello:
> >
> > This patch was applied to netdev/net.git (refs/heads/master):
> >
> > On Wed, 23 Jun 2021 11:28:03 +0800 you wrote:
> >> The Broadcom UniMAC MDIO bus from mdio-bcm-unimac module comes too late.
> >> So, GENET cannot find the ethernet PHY on UniMAC MDIO bus. This leads
> >> GENET fail to attach the PHY as following log:
> >>
> >> bcmgenet fd580000.ethernet: GENET 5.0 EPHY: 0x0000
> >> ...
> >> could not attach to PHY
> >> bcmgenet fd580000.ethernet eth0: failed to connect to PHY
> >> uart-pl011 fe201000.serial: no DMA platform data
> >> libphy: bcmgenet MII bus: probed
> >> ...
> >> unimac-mdio unimac-mdio.-19: Broadcom UniMAC MDIO bus
> >>
> >> [...]
> >
> > Here is the summary with links:
> >   - [v2] net: bcmgenet: Fix attaching to PYH failed on RPi 4B
> >     https://git.kernel.org/netdev/net/c/b2ac9800cfe0

This bot is interesting!!!  Good feature! :)

> There was feedback given that could have deserved a v3, if nothing else
> to fix the typo in the subject, I suppose that would do though.

I can prepare the v3 patch with Florian's suggestion!

Jian-Hong Pan