Re: [PATCH v4 0/6] Add MSM8939 SoC support with two devices

[Bryan O'Donoghue]

On 23/01/2023 16:21, Konrad Dybcio wrote:
> > Please change it to VDDMX (without _AO). It will most likely not make
> > any difference
> Wouldn't it make wake-on-wifi-with-cpus-off possible?
> (obviously given the wlan chip supports it and can ping
> the cpu etc etc)
>
> Konrad

WOWLAN is done via SMD not by raising of an interrupt between WCNSS and 
APSS directly and we do hit VDD min with AO in 4.19.

So, so counter-intuitively so long as the SMD interrupt is unmasked in 
suspend - not a specific WCNSS interrupt, we will wake on WLAN.

Its a complete tangent but, the WCNSS firmware has an SMD RPC call 
called "wake-on-wlan" or somesuch which *would* wake the system via 
interrupt but, appears to never have been implemented...

Anyway.

---
bod