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bus: ti-sysc: Make omap3 gpt12 quirk handling SoC specific

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[ Upstream commit a12315d6d2 ]

On beagleboard revisions A to B4 we need to use gpt12 as the system timer.
However, the quirk handling added for gpt12 caused a regression for system
suspend for am335x as the PM coprocessor needs the timers idled for
suspend.

Let's make the gpt12 quirk specific to omap34xx, other SoCs don't need
it. Beagleboard revisions C and later no longer need to use the gpt12
related quirk. Then at some point, if we decide to drop support for the old
beagleboard revisions A to B4, we can also drop the gpt12 related quirks
completely.

Fixes: 3ff340e24c ("bus: ti-sysc: Fix gpt12 system timer issue with reserved status")
Reported-by: Kevin Hilman <khilman@baylibre.com>
Suggested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tony Lindgren 2022-04-12 12:26:51 +03:00 committed by Greg Kroah-Hartman
parent b3401d4016
commit 25bb9e3ea2
1 changed files with 15 additions and 1 deletions
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16
drivers/bus/ti-sysc.c
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@ -3232,13 +3232,27 @@ static int sysc_check_disabled_devices(struct sysc *ddata)
*/
static int sysc_check_active_timer(struct sysc *ddata)
{
int error;
if (ddata->cap->type != TI_SYSC_OMAP2_TIMER &&
ddata->cap->type != TI_SYSC_OMAP4_TIMER)
return 0;
/*
* Quirk for omap3 beagleboard revision A to B4 to use gpt12.
* Revision C and later are fixed with commit 23885389dbbb ("ARM:
* dts: Fix timer regression for beagleboard revision c"). This all
* can be dropped if we stop supporting old beagleboard revisions
* A to B4 at some point.
*/
if (sysc_soc->soc == SOC_3430)
error = -ENXIO;
else
error = -EBUSY;
if ((ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT) &&
(ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE))
return -ENXIO;
return error;
return 0;
}