On Tue, 25 Mar 2025 00:37:59 +0100 Marek Vasut <ma...@denx.de> wrote:
> On 3/24/25 9:43 AM, Boris Brezillon wrote: > > [...] > > >> @@ -563,6 +585,7 @@ int panthor_device_suspend(struct device *dev) > >> > >> panthor_devfreq_suspend(ptdev); > >> > >> + reset_control_assert(ptdev->resets); > > > > Hm, that might be the cause of the fast reset issue (which is a fast > > resume more than a fast reset BTW): if you re-assert the reset line on > > runtime suspend, I guess this causes a full GPU reset, and the MCU ends > > up in a state where it needs a slow reset (all data sections reset to > > their initial state). Can you try to move the reset_control_[de]assert > > to the unplug/init functions? > Is it correct to assume , that if I remove all reset_control_assert() > calls (and keep only the _deassert() calls), the slow resume problem > should go away too ? Yeah, dropping the _assert()s should do the trick.
