linux-kernel - Re: [PATCH v2] net: phy: meson-gxl: Add generic dummy stubs for MMD register access

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Date:   Mon, 30 Jan 2023 21:16:10 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Chris Healy <cphealy@...il.com>, andrew@...n.ch,
        linux@...linux.org.uk, davem@...emloft.net,
        neil.armstrong@...aro.org, khilman@...libre.com,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        jeremy.wang@...ogic.com
Cc:     Chris Healy <healych@...zon.com>
Subject: Re: [PATCH v2] net: phy: meson-gxl: Add generic dummy stubs for MMD
 register access

On 30.01.2023 21:03, Chris Healy wrote:
> From: Chris Healy <healych@...zon.com>
> 
> The Meson G12A Internal PHY does not support standard IEEE MMD extended
> register access, therefore add generic dummy stubs to fail the read and
> write MMD calls. This is necessary to prevent the core PHY code from
> erroneously believing that EEE is supported by this PHY even though this
> PHY does not support EEE, as MMD register access returns all FFFFs.
> 
> Fixes: 5c3407abb338 ("net: phy: meson-gxl: add g12a support")
> Signed-off-by: Chris Healy <healych@...zon.com>
> ---
> 
> Change in v2:
> * Add fixes tag
> 
Reviewed-by: Heiner Kallweit <hkallweit1@...il.com>