From mboxrd@z Thu Jan  1 00:00:00 1970
From: hkallweit1@gmail.com (Heiner Kallweit)
Date: Sun, 12 Nov 2017 01:14:05 +0100
Subject: Ethernet stopped working after commit "ARM64: dts: meson-gx: add
 external PHY interrupt on some platforms"
In-Reply-To: <c398c180-e1dc-dea6-36b4-bc385a4c2eb3@gmail.com>
References: <c398c180-e1dc-dea6-36b4-bc385a4c2eb3@gmail.com>
Message-ID: <00aba1d0-6230-c368-4fa6-425e8b406c36@gmail.com>
To: linus-amlogic@lists.infradead.org
List-Id: linus-amlogic.lists.infradead.org

Am 10.11.2017 um 23:30 schrieb Heiner Kallweit:
> Hi Jerome,
> 
> after commit b94d22d94ad22 "ARM64: dts: meson-gx: add external PHY
> interrupt on some platforms" ethernet stopped working on my Odroid-C2.
> 
> AFAIK you meanwhile also have an Odroid-C2 for testing. Does it work for you?
> 
> Rgds, Heiner
> 
After some more checking I found that the RTL8211F INER register doesn't seem
to accept writes. If I read back the INER register value in
rtl8211f_config_intr() I always get 0x0000, no matter which values I write to
the register before.
If no interrupt is triggered by the chip it's clear that ethernet isn't working.

I add Shengzhou who submitted the RTL8211F support as I'm curious whether anybody
ever used the RTL8211F successfully in interrupt mode.

I have some doubts as the code doesn't enable the interrupt for finished aneg
(only the one for link change).

Or may there be chip versions w/o interrupt support?

Rgds, Heiner