Hi,
On Fri, 2021-08-06 at 13:54 +0300, Matwey V. Kornilov wrote:
> Hello,
>
> I've found that the following commit breaks USB on BeagleBone Black
> board (am335x based):
>
> commit 942853dd96df5de1c0a2a61c877c1cf1c24f1e91
> Author: Paul Barker <paul.bar...@sancloud.com>
> Date: Mon Jul 12 21:14:09 2021 +0100
>
> arm: dts: Resync BeagleBone device trees
>
>
> When commit is applied then I see the following:
>
> starting USB...
> No working controllers found
> USB is stopped. Please issue 'usb start' first.
> starting USB...
> No working controllers found
>
> Before the commit USB was working as expected:
>
> starting USB...
> Bus usb@47401800: scanning bus usb@47401800 for devices... 1 USB Device(s)
> found
> scanning usb for storage devices... 1 Storage Device(s) found
>
> Device 0: Vendor: Rev: PMAP Prod: USB DISK Pro
> Type: Removable Hard Disk
> Capacity: 7381.2 MB = 7.2 GB (15116736 x 512)
> ... is now current device
It looks the the arch/arm/dts/am33xx.dtsi file is out of sync with
Linux, leading to this regression. In the current U-Boot version, it
has
status = "disabled";
lines for e.g. usb0 while in Linux mainline, those are missing. As the
commit you found by bisecting drops the
status = "okay";
lines from arch/arm/dts/am335x-bone-common.dtsi, the device now are no
longer enabled. Maybe try syncing am33xx.dtsi as well to check if it
helps?
--
Harald
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-62 Fax: +49-8142-66989-80 Email: h...@denx.de
