[PATCH v4 1/1] arm64: dts: ti: k3-am62-wakeup: Configure ti-sysc for wkup_uart0

[Markus Schneider-Pargmann]

Hi Tony,

On Fri, Jan 26, 2024 at 10:20:06AM +0200, Tony Lindgren wrote:
> * Markus Schneider-Pargmann <msp at baylibre.com> [240124 13:55]:
> > I tested this patch on am62-lp-sk and required this additional property:
> > 
> >   ti,no-reset-on-init;
> > 
> > I am not sure at the moment why a reset doesn't work. But with the given
> > property (so without reset) the wakeup on wkup_uart0 works as expected.
> 
> OK. This might be some firmware related difference. Care to describe what
> goes wrong so that can be added to the patch description?

I tested this patch on sk-am62-lp on the upstream kernel and on the
latest ti-sdk 6.1 kernel. With the ti-sdk 6.1 kernel I get mbox timeouts
if the driver resets the ti-sysc. If it doesn't reset it, everything
works on ti-sdk 6.1 as expected as well including wakeup from the
wkup_uart0.

Best,
Markus