[PATCH] clocksource/drivers/timer-ti-dm: fix regression from errata i940 fix

[Drew Fustini]

On Wed, Feb 02, 2022 at 03:33:45PM -0600, Suman Anna wrote:
> On 2/2/22 15:25, Drew Fustini wrote:
> > The existing fix for errata i940 causes a conflict for IPU2 which is
> > using timer 3 and 4. From arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi:
> > 
> >   &ipu2 {
> >           mboxes = <&mailbox6 &mbox_ipu2_ipc3x>;
> >           ti,timers = <&timer3>;
> >           ti,watchdog-timers = <&timer4>, <&timer9>;
> >   };
> > 
> > I discovered the timer conflict from when booting mainline on a
> > BeagleBoard X15 (AM5728):
> > 
> >   remoteproc remoteproc1: 55020000.ipu is available
> >   remoteproc remoteproc1: powering up 55020000.ipu
> >   remoteproc remoteproc1: Booting fw image dra7-ipu2-fw.xem4
> >   omap-rproc 55020000.ipu: could not get timer platform device
> >   omap-rproc 55020000.ipu: omap_rproc_enable_timers failed: -19
> >   remoteproc remoteproc1: can't start rproc 55020000.ipu: -19
> > 
> > I modified the errata fix to use timer 15 and 16 instead which resolves
> > the timer conflict.
> > 
> > Fixes: 25de4ce5ed02 ("clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940")
> > Link: https://lore.kernel.org/linux-omap/YfWsG0p6to3IJuvE@x1/
> 
> Suggested-by: Suman Anna <s-anna at ti.com>

Yes, thank you for adding.