From 0d3a67b1954a3988fef20ba7641d33e6085ad313 Mon Sep 17 00:00:00 2001 From: "Markus Schneider-Pargmann (TI)" Date: Fri, 28 Aug 2026 20:47:45 +0200 Subject: clocksource/drivers/timer-ti-dm: Register clocksource/event only for am654 Registering clocksource/clockevent for the older platforms breaks booting them. The older platforms have their own implementation in early boot that is used to register clocksource/clockevent in timer-ti-dm-systimer.c. With am654, the timer is much more complex with more dependencies so doing this in early boot with the other driver is very difficult and gets ugly. Instead it is implemented in the platform driver for am654. However the old platforms may not register clocksource/clockevent in this driver as that would break the boot. Add a system_timer_capable flag that is only set for am654-timer that gates the clocksource/clockevent registration. Reported-by: H. Nikolaus Schaller Closes: https://lore.kernel.org/r/2013A99A-0502-4128-ACFA-B04886224393@goldelico.com Fixes: b8eeeca55456 ("clocksource/drivers/timer-ti-dm: Add clocksource support") Signed-off-by: Markus Schneider-Pargmann (TI) Signed-off-by: Daniel Lezcano Tested-by: Andreas Kemnade # OMAP3 GTA04 Tested-by: Kevin Hilman # OMAP3 Beagle XM Tested-by: H. Nikolaus Schaller # OMAP3 OpenPandora Link: https://patch.msgid.link/20260828-v7-3-next-topic-ti-timer-dm-clocksource-omap-fix-v1-1-85f0e4dc6f9f@baylibre.com --- include/linux/platform_data/dmtimer-omap.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/dmtimer-omap.h b/include/linux/platform_data/dmtimer-omap.h index 726d89143842..b78ee4676b98 100644 --- a/include/linux/platform_data/dmtimer-omap.h +++ b/include/linux/platform_data/dmtimer-omap.h @@ -57,6 +57,8 @@ struct dmtimer_platform_data { u32 timer_errata; int (*get_context_loss_count)(struct device *); const struct omap_dm_timer_ops *timer_ops; + /* always-on timers can be used for clocksource/clockevent */ + bool system_timer_capable; }; #endif /* __PLATFORM_DATA_DMTIMER_OMAP_H__ */ -- cgit v1.2.3