Re: [PATCH v5] arm64: dts: marvell: add Globalscale MOCHAbin

[Marek Behún]

On Fri, 8 Oct 2021 17:52:40 +0200
Robert Marko <robert.marko@xxxxxxxxxx> wrote:

> I have to agree, so I did some digging.
> I don't think that the Armada 8k PCI driver actually supports HW level PERST#.
> I then looked at the functional specs and the only thing that looks
> related to PERST#
> is PCIe Software Reset Register which has a SoftWarePERst bit.
> 
> Can you maybe look at it?
> 
> Removed the reset-gpios and set the PERST pinmux to PCIe, and the
> QCA9377 card will
> show up, but I have no idea whether PERST# actually ever gets toggled.

You can check with voltmeter, toggle the bit via mw command in u-boot.