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| author | Markus Schneider-Pargmann (TI) <msp@baylibre.com> | 2026-08-28 20:47:45 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@kernel.org> | 2026-10-02 12:03:36 +0200 |
| commit | 0d3a67b1954a3988fef20ba7641d33e6085ad313 (patch) | |
| tree | 97712c502685693096a0d4fe931b7668404fc079 /include/linux/platform_data | |
| parent | a2cab84d6601d92f8b67b9dbdae568f5276bf841 (diff) | |
| download | linux-next-0d3a67b1954a3988fef20ba7641d33e6085ad313.tar.gz linux-next-0d3a67b1954a3988fef20ba7641d33e6085ad313.zip | |
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 <hns@goldelico.com>
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) <msp@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Tested-by: Andreas Kemnade <andreas@kemnade.info> # OMAP3 GTA04
Tested-by: Kevin Hilman <khilman@baylibre.com> # OMAP3 Beagle XM
Tested-by: H. Nikolaus Schaller <hns@goldelico.com> # OMAP3 OpenPandora
Link: https://patch.msgid.link/20260828-v7-3-next-topic-ti-timer-dm-clocksource-omap-fix-v1-1-85f0e4dc6f9f@baylibre.com
Diffstat (limited to 'include/linux/platform_data')
| -rw-r--r-- | include/linux/platform_data/dmtimer-omap.h | 2 |
1 files changed, 2 insertions, 0 deletions
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__ */ |