Re: [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION

Lecopzer Chen
2020-12-18T05:04:39Z

Hi Catalin,

Thanks for your explanation.

> > so there is two points
> > 1. out-of-tree function can't be approved
> > I totally agree with this :) so we may have a driver upstream in the future.
>
> It may not be upstreamable if it relies on the old APM interface ;).
>
> > 2. APM not make sense on arm64
> > Could you please let me konw the reason why APM on ARM64 doesn't make sense?
>
> It's a very old interface, even on x86 it is disabled in the distro
> kernels. There are more modern alternatives and you should update your
> driver and user space to use them (e.g. /sys/power/).

Got it! I will disscuss with our internal team to update their drivers.

thanks a lot!

BRs,