linux-kernel - Re: [PATCH] net: phy: dp83867: w/a for fld detect threshold bootstrapping issue

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Message-Id: <20200321.201022.719210614219273669.davem@davemloft.net>
Date:   Sat, 21 Mar 2020 20:10:22 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     grygorii.strashko@...com
Cc:     andrew@...n.ch, f.fainelli@...il.com, dmurphy@...com,
        hkallweit1@...il.com, netdev@...r.kernel.org, nsekhar@...com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: phy: dp83867: w/a for fld detect threshold
 bootstrapping issue

From: Grygorii Strashko <grygorii.strashko@...com>
Date: Tue, 17 Mar 2020 20:04:54 +0200

> When the DP83867 PHY is strapped to enable Fast Link Drop (FLD) feature
> STRAP_STS2.STRAP_ FLD (reg 0x006F bit 10), the Energy Lost Threshold for
> FLD Energy Lost Mode FLD_THR_CFG.ENERGY_LOST_FLD_THR (reg 0x002e bits 2:0)
> will be defaulted to 0x2. This may cause the phy link to be unstable. The
> new DP83867 DM recommends to always restore ENERGY_LOST_FLD_THR to 0x1.
> 
> Hence, restore default value of FLD_THR_CFG.ENERGY_LOST_FLD_THR to 0x1 when
> FLD is enabled by bootstrapping as recommended by DM.
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>

Applied, thank you.

Let me know if I should queue this up for -stable.