netdev - Re: [PATCH net v2] net: phy: broadcom: stub c45 read/write for 54810

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Message-ID: <21a9cd2d-3c9c-dd2c-c86a-b1099c61f6fd@broadcom.com>
Date: Sun, 13 Aug 2023 07:58:43 -0700
From: Florian Fainelli <florian.fainelli@...adcom.com>
To: Justin Chen <justin.chen@...adcom.com>, netdev@...r.kernel.org
Cc: Broadcom internal kernel review list
 <bcm-kernel-feedback-list@...adcom.com>, Andrew Lunn <andrew@...n.ch>,
 Heiner Kallweit <hkallweit1@...il.com>, Russell King
 <linux@...linux.org.uk>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Jon Mason <jon.mason@...adcom.com>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net v2] net: phy: broadcom: stub c45 read/write for 54810

On 8/12/2023 9:41 PM, Justin Chen wrote:
> The 54810 does not support c45. The mmd_phy_indirect accesses return
> arbirtary values leading to odd behavior like saying it supports EEE
> when it doesn't. We also see that reading/writing these non-existent
> MMD registers leads to phy instability in some cases.
> 
> Fixes: b14995ac2527 ("net: phy: broadcom: Add BCM54810 PHY entry")
> Signed-off-by: Justin Chen <justin.chen@...adcom.com>

Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
-- 
Florian

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