netdev - Re: [PATCH net-next v3 2/2] net: phy: mscc: RGMII skew delay configuration

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Date:   Thu, 19 Mar 2020 17:52:40 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Antoine Tenart <antoine.tenart@...tlin.com>
Cc:     davem@...emloft.net, f.fainelli@...il.com, hkallweit1@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 2/2] net: phy: mscc: RGMII skew delay
 configuration

On Thu, Mar 19, 2020 at 03:19:58PM +0100, Antoine Tenart wrote:
> This patch adds support for configuring the RGMII skew delays in Rx and
> Tx. The Rx and Tx skews are set based on the interface mode. By default
> their configuration is set to the default value in hardware (0.2ns);
> this means the driver do not rely anymore on the bootloader
> configuration.
> 
> Then based on the interface mode being used, a 2ns delay is added:
> - RGMII_ID adds it for both Rx and Tx.
> - RGMII_RXID adds it for Rx.
> - RGMII_TXID adds it for Tx.
> 
> Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>

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

    Andrew