netdev - Re: [PATCH] net: phy: realtek: fix RTL8211F interrupt mode

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Date:   Mon, 13 Nov 2017 17:36:02 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        Shengzhou Liu <Shengzhou.Liu@...escale.com>
Subject: Re: [PATCH] net: phy: realtek: fix RTL8211F interrupt mode

On Sun, 2017-11-12 at 16:16 +0100, Heiner Kallweit wrote:
> After commit b94d22d94ad22 "ARM64: dts: meson-gx: add external PHY
> interrupt on some platforms" ethernet stopped working on my Odroid-C2
> which has a RTL8211F phy.
> 
> It turned out that no interrupts were triggered. Further analysis
> showed the register INER can't be altered on page 0.
> Because register INSR needs to be accessed via page 0xa43 I assumed
> that register INER needs to be accessed via some page too.
> Some brute force check resulted in page 0xa42 being the right one.
> 
> With this patch the phy is working properly in interrupt mode.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>

Tested-by: Jerome Brunet <jbrunet@...libre.com>