netdev - Re: riscv defconfig CONFIG_PM/macb/generic PHY regression in v5.18-rc1

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Date:   Tue, 5 Apr 2022 16:53:06 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Conor.Dooley@...rochip.com
Cc:     palmer@...osinc.com, apatel@...tanamicro.com,
        netdev@...r.kernel.org, Nicolas.Ferre@...rochip.com,
        Claudiu.Beznea@...rochip.com, andrew@...n.ch, hkallweit1@...il.com,
        linux-riscv@...ts.infradead.org
Subject: Re: riscv defconfig CONFIG_PM/macb/generic PHY regression in
 v5.18-rc1

On Tue, Apr 05, 2022 at 01:05:12PM +0000, Conor.Dooley@...rochip.com wrote:
> Hey,
> I seem to have come across a regression in the default riscv defconfig
> between riscv-for-linus-5.18-mw0 (bbde015227e8) & v5.18-rc1, exposed by
> c5179ef1ca0c ("RISC-V: Enable RISC-V SBI CPU Idle driver for QEMU virt
> machine") which causes the ethernet phy to not come up on my Icicle kit:
> [ 3.179864] macb 20112000.ethernet eth0: validation of sgmii with support 0000000,00000000,00006280 and advertisement 0000000,00000000,00004280 failed: -EINVAL
> [ 3.194490] macb 20112000.ethernet eth0: Could not attach PHY (-22)

I don't think that would be related to the idle driver. This looks like
the PHY hasn't filled in the supported mask at probe time - do you have
the driver for the PHY built-in or the PHY driver module loaded?

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