linux-kernel - [BISECTED, REGRESSION] Broken networking on MIPS/OCTEON EdgeRouter Lite

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Message-ID: <20190322002125.GD7872@darkstar.musicnaut.iki.fi>
Date:   Fri, 22 Mar 2019 02:21:26 +0200
From:   Aaro Koskinen <aaro.koskinen@....fi>
To:     Vinod Koul <vkoul@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [BISECTED, REGRESSION] Broken networking on MIPS/OCTEON EdgeRouter
 Lite

Hi,

When booting v5.1-rc1 on EdgeRouter Lite (MIPS/OCTEON), with at803x phy
driver enabled, networking no longer works - I even need to go physically
power cycle the board before getting networking to work again (otherwise
bootloader cannot tftp an older working image).

Bisected to:

	commit 6d4cd041f0af5b4c8fc742b4a68eac22e420e28c
	Author: Vinod Koul <vkoul@...nel.org>
	Date:   Thu Feb 21 15:53:15 2019 +0530

	    net: phy: at803x: disable delay only for RGMII mode

Booting v5.1-rc1 with this commit reverted makes networking to work
fine again.

A.