netdev - Re: [PATCH net v1 1/3] net: phy: mscc: adding LCPLL reset to VSC8514

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Message-ID: <20210212162318.zx6nx2suzdfocu55@skbuf>
Date:   Fri, 12 Feb 2021 16:23:19 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Bjarni Jonasson <bjarni.jonasson@...rochip.com>
CC:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Antoine Tenart <atenart@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Steen Hegelund <steen.hegelund@...rochip.com>
Subject: Re: [PATCH net v1 1/3] net: phy: mscc: adding LCPLL reset to VSC8514

On Fri, Feb 12, 2021 at 03:06:41PM +0100, Bjarni Jonasson wrote:
> At Power-On Reset, transients may cause the LCPLL to lock onto a
> clock that is momentarily unstable. This is normally seen in QSGMII
> setups where the higher speed 6G SerDes is being used.
> This patch adds an initial LCPLL Reset to the PHY (first instance)
> to avoid this issue.
> 
> Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
> Signed-off-by: Bjarni Jonasson <bjarni.jonasson@...rochip.com>
> Fixes: e4f9ba642f0b ("net: phy: mscc: add support for VSC8514 PHY.")
> ---

Tested-by: Vladimir Oltean <vladimir.oltean@....com> # for regressions