Hi, * Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> [230403 05:48]: > So if there is some clk handling necessary before the register access, > I'm not aware where it's hidden. Is there some bus or omap specific code > that ensures clk handling? I think the missing part is that the runtime PM calls in the i2c driver cause the parent ti-sysc interconnect target module device to get enabled and clocked before accessing the i2c registers. Regards, Tony