[PATCH 2/2] pinctrl: aspeed: Allow monitoring of power control input GPIOs
Andrew Jeffery
andrew at aj.id.au
Thu Feb 3 09:55:01 AEDT 2022
On Thu, 3 Feb 2022, at 06:30, Bills, Jason M wrote:
> The pass-through input GPIOs cannot be monitored because when
> requested, pass-through is disabled which causes a change on the
> pass-through output.
>
> The SIO GPIOs cannot be monitored because when requested, the
> request is rejected based on the value of the ACPI strap.
>
> This change removes the register check condition from the pass-
> through and desired SIO GPIOs so they can be requested and
> monitored from power control.
I'll have to take some time to convince myself of the impact of this
one.
I'm wondering whether we're better off adding some explicit support in
the generic aspeed pinctrl code. The behaviour is essentially allowing
the GPIO controller to snoop the pin state of other mux configurations.
Again, thanks for surfacing this patch.
Andrew
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