Hello Tony, On 1/16/24 08:43, Tony Lindgren wrote: > * Thomas Richard <thomas.richard@xxxxxxxxxxx> [240115 16:16]: >> Some IOs can be needed during suspend_noirq/resume_noirq. >> So move suspend/resume callbacks to noirq. > > So have you checked that the pca953x_save_context() and restore works > this way? There's i2c traffic and regulators may sleep.. I wonder if > you instead just need to leave gpio-pca953x enabled in some cases > instead? > Yes I tested it, and it works (with my setup). But this patch may have an impact for other people. How could I leave it enabled in some cases ? Regards, -- Thomas Richard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com