On 2/3/2022 1:20 PM, Stephen Boyd wrote: > Quoting Anjelique Melendez (2022-02-02 17:08:07) >> From: David Collins <collinsd@xxxxxxxxxxxxxx> >> >> On certain PMICs, an unexpected assertion of KPDPWR_DEB (the >> positive logic hardware debounced power key signal) may be seen >> during the falling edge of KPDPWR_N (i.e. a power key press) when >> it occurs close to the rising edge of SLEEP_CLK. This then >> triggers a spurious KPDPWR interrupt. >> >> Handle this issue by adding software debouncing support to ignore >> key events that occur within the hardware debounce delay after the >> most recent key release event. >> >> Signed-off-by: David Collins <collinsd@xxxxxxxxxxxxxx> >> Signed-off-by: Anjelique Melendez <quic_amelende@xxxxxxxxxxx> >> --- > > Is there a Fixes tag that should be here? Is it a new problem with newer > PMICs? There is no Fixes tag since this is a workaround for a HW bug. Yes, this is a relatively new problem with the past few PMICs. Starting with PM8450, we need this workaround in pm8941-pwrkey since we are no longer using an older downstream driver that had an equivalent work around.
