From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Lunn <andrew@lunn.ch>
Subject: Re: [PATCH 2/2] PCI: armada8k: don't toggle reset twice
Date: Thu, 10 Jan 2019 14:19:12 +0100
Message-ID: <20190110131912.GB29612@lunn.ch>
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To: Baruch Siach <baruch@tkos.co.il>
Cc: linux-pwm@vger.kernel.org, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Sven Auhagen <sven.auhagen@voleatech.de>, Jason Cooper <jason@lakedaemon.net>, linux-gpio@vger.kernel.org, linux-pci@vger.kernel.org, Linus Walleij <linus.walleij@linaro.org>, Bartosz Golaszewski <bgolaszewski@baylibre.com>, Thierry Reding <thierry.reding@gmail.com>, Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Bjorn Helgaas <bhelgaas@google.com>, Gregory Clement <gregory.clement@bootlin.com>, linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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> Sven Auhagen reported the same issue with Intel NIC attached to
> mini-PCIe slots on a custom Armada 8K design.

O.K. so that suggests the issue is on the Armada side.
 
> How would you suggest to investigate this issue?

I presume reboot works O.K? So it is possible to toggle the reset
multiple times, but reboot must do something additional which makes it
work? Do you have sources for the bootloader?

Are there status bits in the comphy about the state of the link? Maybe
comphy needs to be kicked to reestablish the link?

       Andrew