linux-kernel - Re: [PATCH v2] net: phy: DP83822: enable rgmii mode if phy_interface_is

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Message-ID: <YoaUPvwccJZ6vT/S@lunn.ch>
Date:   Thu, 19 May 2022 21:02:22 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
Cc:     michael@...rulasolutions.com, alberto.bianchi@...rulasolutions.com,
        linux-amarula@...rulasolutions.com, linuxfancy@...glegroups.com,
        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>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: phy: DP83822: enable rgmii mode if
 phy_interface_is_rgmii

On Thu, May 19, 2022 at 08:50:56PM +0200, Tommaso Merciai wrote:
> RGMII mode can be enable from dp83822 straps, and also writing bit 9
> of register 0x17 - RMII and Status Register (RCSR).
> When phy_interface_is_rgmii rgmii mode must be enabled, same for
> contrary, this prevents malconfigurations of hw straps
> 
> References:
>  - https://www.ti.com/lit/gpn/dp83822i p66
> 
> Signed-off-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
> Co-developed-by: Michael Trimarchi <michael@...rulasolutions.com>
> Suggested-by: Alberto Bianchi <alberto.bianchi@...rulasolutions.com>
> Tested-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
> ---
> Changes since v1:
>  - Improve commit msg
>  - Add definition of bit 9 reg rcsr (rgmii mode en)
>  - Handle case: phy_interface_is_rgmii is false

Please don't post a new version for at least 24 hours. Give people
time to review the code and make comments.

     Andrew