Hi Biju, > -----Original Message----- > From: Biju Das > Sent: Tuesday, July 20, 2021 11:55 AM > RZ/G2L document says we should not turn off cd clock during suspend. > Otherwise card detection >From a hardware standpoint....yes. > Won't work. So whether SDHI can reliably work in this case? Basically if > there is no activity, > this module can go into suspend state. If the cd clock turned off and card > detection fails > during resume, how the SDHI functionality going to work? What I am saying is that from a system design standpoint, you need to wake up the system first before you can use the SD card (even detecting a card insert/remove). > Note:- > Currently I am configuring CD pin as gpio rather than function due to some > reset issue[1]. After reset > cd detection fails. But it works ok, if it configured as GPIO. > 1) Handle it in SDHI driver? ie, enable it during probe only once and > > avoid turning it off > > > > or > > > > 2) Add this clock as critical clock, so it will be turned on > > permanently and don't handle it in SDHI driver? So does that mean your #1 and #2 both do not work unless the pin is configured as GPIO? Chris
