Re: [PATCH] rtc: max77686: Fix wake-ups for max77620

[Krzysztof Kozlowski <krzk@kernel.org>]

On Thu, Aug 06, 2020 at 01:54:31PM +0100, Jon Hunter wrote:
> Following commit d8f090dbeafd ("rtc: max77686: Do not allow interrupt to
> fire before system resume"), RTC wake-ups stopped working on Jetson TX2
> and Jetson Xavier platforms. The Jetson TX2 uses the max77620 PMIC and
> the Jetson Xavier uses max20024 PMIC. Both of these PMICs have the same
> max77620 RTC controller.
> 
> For the max77620 RTC, the variable 'rtc_irq_from_platform' is defined as
> true in the max77686 driver and because of this the IRQ passed to the
> max77686 driver for RTC is the PMIC IRQ and not the parent. Hence,
> following commit d8f090dbeafd ("rtc: max77686: Do not allow interrupt to
> fire before system resume"), for the max77620 the RTC IRQ within the
> PMIC is now getting disabled on entry to suspend and unable to wake the
> system up. Fix this by only disabling interrupts on entry to suspend
> in the max77686 RTC driver, if the interrupt is the parent interrupt.
> 
> Fixes: d8f090dbeafd ("rtc: max77686: Do not allow interrupt to fire before system resume")
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
>  drivers/rtc/rtc-max77686.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof