06.10.2021 01:19, Dmitry Osipenko пишет: ... > I reproduced the OFF problem by removing the clk prepare/unprepare from > the suspend/resume of the clk driver and making some extra changes to > clock tree topology and etc to trigger the problem on Nexus 7. > > tegra-pmc 7000e400.pmc: failed to turn off PM domain heg: -13 > > It happens from genpd_suspend_noirq() -> tegra_genpd_power_off() -> clk > -> GENPD -> I2C -> runtime-pm. > > -13 is EACCES, it comes from the runtime PM of I2C device. RPM is > prohibited/disabled during late (NOIRQ) suspend by the drivers core. My bad, I double-checked and it's not I2C RPM that is failing now, but the clock's RPM [1], which is also unavailable during NOIRQ. [1] https://elixir.free-electrons.com/linux/v5.15-rc4/source/drivers/clk/clk.c#L116 Previously it was I2C RPM that was failing in a similar way, but code changed a tad since that time.
