netdev - Re: [PATCH RFC v2 06/11] net: stmmac: dwmac-meson8b: Fetch the "timing-adjustment" clock

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Date:   Fri, 1 May 2020 17:35:34 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     robh+dt@...nel.org, f.fainelli@...il.com,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        jianxin.pan@...ogic.com, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RFC v2 06/11] net: stmmac: dwmac-meson8b: Fetch the
 "timing-adjustment" clock

On Wed, Apr 29, 2020 at 10:16:39PM +0200, Martin Blumenstingl wrote:
> The PRG_ETHERNET registers have a built-in timing adjustment circuit
> which can provide the RX delay in RGMII mode. This is driven by an
> external (to this IP, but internal to the SoC) clock input. Fetch this
> clock as optional (even though it's there on all supported SoCs) since
> we just learned about it and existing .dtbs don't specify it.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew