On Fri, May 27, 2022 at 1:01 PM Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx> wrote: > > I have the following problem. The latest kernel version I am using for > my devices is 5.4.x. In my DTS I don't explicitly expose the GPIOs to > the usespace but I can read input both via sysfs as also libgpiod API. > > With the newest kernel like 5.17 or 5.18, I can read the same input > pin but I always read 0. I have also tried to add my GPIOs as > "default" into the am33xx_pinmux section (the way it is done in [1]) but > it didn't help. > > [1] https://patchwork.kernel.org/project/linux-omap/patch/20200712103717.1219765-1-drew@xxxxxxxxxxxxxxx/ > > Regards, > Yegor Hello Yegor, Which am335x board are you using? Is it the PocketBeagle? Have you tried reverting abe4e4675dfc ("ARM: dts: am335x-pocketbeagle: set default mux for gpio pins") to see if the results change? Please post the dts files you created or modified so I can better familiarize myself with your environment. Unfortunately, I'm currently traveling with only a BeagleBone Black, but it might be useful for testing depending on what the issue is. Thanks, Drew
