On Thu, Sep 03, 2020 at 08:34:55PM +0530, satya priya wrote: > Add the necessary pinctrl and interrupts to make UART wakeup capable. > > If QUP function is selected in sleep state, UART RTS/RFR is pulled high > during suspend and BT SoC not able to send wakeup bytes. So, configure > GPIO mode in sleep state to keep it low during suspend. > > Signed-off-by: satya priya <skakit@xxxxxxxxxxxxxx> > Reviewed-by: Akash Asthana <akashast@xxxxxxxxxxxxxx> One more doubt: does it actually make sense/is it safe to add the sleep config for all UARTs in the SoC file? I wonder if there could be undesired behavior (like noise on TX or RTS looking active to the other side) without the corresponding pinconf in the board file. If the pinconf is needed to avoid unexpected behavior then it is better to change the muxing in the board file to have a sane default configuration in the SoC .dtsi. >From a quick grep it seems that most SoCs don't specify a sleep config for their UART pins and some boards add it in their DT.
