netdev - RE: [net-next 3/3] ravb: TROCR register is only present on R-Car Gen3

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Message-ID: <TYAPR01MB45444FCB6B49AC2EAD8CEA72D8BE0@TYAPR01MB4544.jpnprd01.prod.outlook.com>
Date:   Mon, 2 Sep 2019 10:51:25 +0000
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     Simon Horman <horms+renesas@...ge.net.au>,
        David Miller <davem@...emloft.net>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:     Magnus Damm <magnus.damm@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>
Subject: RE: [net-next 3/3] ravb: TROCR register is only present on R-Car Gen3

Hi Simon-san,

> From: Simon Horman, Sent: Monday, September 2, 2019 5:06 PM
> 
> Only use the TROCR register on R-Car Gen3.
> It is not present on other SoCs.
> 
> Offsets used for the undocumented registers are also considered reserved
> and should not be written to.
> 
> After some internal investigation with Renesas it remains unclear why this
> driver accesses these fields on R-Car Gen2 but regardless of what the
> historical reasons are the current code is considered incorrect.
> 
> Signed-off-by: Simon Horman <horms+renesas@...ge.net.au>

Thank you for the patch!

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

Best regards,
Yoshihiro Shimoda