On Thu, Jun 20, 2024 at 03:30:29PM GMT, Caleb Connolly wrote: > > > On 20/06/2024 15:15, Dmitry Baryshkov wrote: > > On Wed, 19 Jun 2024 at 23:33, Caleb Connolly <caleb.connolly@xxxxxxxxxx> wrote: > > > > > > Give a hint to the OS which role we prefer. Host mode generally makes > > > the most sense. > > > > Why? > > I guess this is subjective, but on these boards the more common usecase is > host mode (before we had role switching we forced them to host mode...). > > > > > > > > Signed-off-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx> > > > --- > > > arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 4 ++++ > > > 1 file changed, 4 insertions(+) > > > > Would it make sense to set this for all the RB and HDK boards? > > The rb1/2 are the only boards which lack multiple USB controllers. For > others it's fine to leave the default (peripheral mode). SM8450-HDK and SM8650-HDK also have just a single USB-C port. My logic was slightly different. We consider these devices to be SBCs, so I'd expect that they act as hosts _by_default_. If somebody plugs RB board into a laptop, then it's logical that it should work as a device, but between the phone and the RB board the RB is a host. -- With best wishes Dmitry
