Re: Fwd: Re: CMA on raspberry pi 4

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Thanks. Just out of curiosity, how can I use "dmesg" w/o keyboard?

Appreciate, Thomas

On Mon, Aug 3, 2020 at 7:37 PM Stefan Wahren <stefan.wahren@xxxxxxxx> wrote:
Hi,

Am 03.08.20 um 12:04 schrieb Peter Robinson:
> On Mon, Aug 3, 2020 at 10:57 AM <ng0177@xxxxxxxxx> wrote:
>> I used today's rawhide image from https://dl.fedoraproject.org/pub/fedora/linux/releases/32/Workstation/aarch64/images/ and get to the Welcome screen but then neither USB keyboard nor mouse work and I am stuck on my RPi4/8GB.
> I don't think the support for loading the USB firmware on the 8Gb
> model has made it upstream yet. In the 1/2/4gb models it was loaded by
> the Raspberry Pi firmware from SPI flash, in the 8Gb model they
> dropped the SPI flash and there has to be kernel patches to load it.
> That problem is unrelated to the CMA/DMA issue.

the USB quirk is available in Linux 5.8 [1], but there is a related
report [2].

It seems to be related to the board revision and possibly arm64.

A dmesg output might be helpful.

Regards
Stefan

[1] -
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.8&id=c65822fef4adc0ba40c37a47337376ce75f7a7bc

[2] - https://github.com/raspberrypi/linux/issues/3747



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