[PATCH v2 0/2] Fix 'no USB device found' error.

[Nishanth Menon]

On 13:59-20230623, Tom Rini wrote:
> On Fri, Jun 23, 2023 at 09:42:01AM +0200, Julien Panis wrote:
> > 
> > 
> > On 6/22/23 17:49, Tom Rini wrote:
> > > On Thu, Jun 22, 2023 at 04:34:34PM +0200, Julien Panis wrote:
> > > > This series fixes usb0 dr_mode for am335x-icev2
> > > > and am335x-evmsk. It must be set to 'peripheral'
> > > > in order to avoid 'no USB device found' error,
> > > > in usb_ether_init() function.
> > > > 
> > > > Signed-off-by: Julien Panis <jpanis at baylibre.com>
> > > > ---
> > > > Changes in v2:
> > > > - Drop the modification made in arch/arm/mach-omap2/am33xx/board.c
> > > > - Configure usb0 dr_mode as peripheral in 'am335x-icev2-u-boot.dtsi'
> > > >    and 'am335x-evmsk-u-boot.dtsi' device trees.
> > > > - Link to v1: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v1-1-2156923994a9@baylibre.com
> > > > 
> > > > ---
> > > > Julien Panis (2):
> > > >        arm: dts: am335x-icev2-u-boot: Configure peripheral mode for usb0
> > > >        arm: dts: am335x-evmsk-u-boot: Configure peripheral mode for usb0
> > > > 
> > > >   arch/arm/dts/am335x-evmsk-u-boot.dtsi | 4 ++++
> > > >   arch/arm/dts/am335x-icev2-u-boot.dtsi | 4 ++++
> > > >   2 files changed, 8 insertions(+)
> > > I'll ask the first question that Nishanth might also ask, which is why
> > > don't these belong in the kernel dts files?  Thanks!
> > > 
> > 
> > That's a good question. :) Looping Nishanth...
> > usb0 dr_mode property is already overlayed for am335x-evm,
> > in 'am335x-evm-u-boot.dtsi'. So, it appeared more consistent
> > to me to do the same thing for am335x-icev2 and am335x-evmsk.
> > I guess that the goal is to configure usb0 as host by default at
> > kernel boot, since we do not necessarily want to use this usb0
> > as peripheral from userspace.
> > Is it the right explanation @Vignesh @Nishanth ?
> 
> It's I think even more likely that the am335x_evm fragment needs to go
> upstream too.
 
Adding Tony to the thread, but I think it is better to send the changes
to upstream kernel.

--
Regards
Nishanth Menon