Hi Diego, On 2024-02-09 at 16:17:13 +0100, Diego Roversi <[email protected]> wrote: > On Mon, 05 Feb 2024 11:17:34 +0100 > Frank Oltmanns <[email protected]> wrote: > >> Hi Diego, >> >> On 2024-02-05 at 09:52:33 +0100, Diego Roversi <[email protected]> wrote: >> > Hello, >> > >> > I've use git bisect, and I found that the problem is introduced with >> > this commit: >> > >> > commit 1b722407a13b7f8658d2e26917791f32805980a2 (HEAD) >> > Merge: f8824e151fbf 5ff2977b1976 >> > Author: Linus Torvalds <[email protected]> >> > Date: Thu Jun 29 11:00:17 2023 -0700 >> > >> > Merge tag 'drm-next-2023-06-29' of >> > git://anongit.freedesktop.org/drm/drm >> > >> > >> > But this is a lot of stuff, so I'm not sure what is the real issue. >> > >> >> While I don't know how to continue the bisect for this merge, the >> content of the pull request that led to this merge commint is here: >> https://lore.kernel.org/all/CAPM=9twgy8jvci0ipwdfupepvpf6bxmygbtt8hxwkqdsqfc...@mail.gmail.com/ >> >> One can see that there are three commits that touch sunxi-ng: >> >> Roman Beranek (2): >> drm: sun4i: rename sun4i_dotclock to sun4i_tcon_dclk >> drm: sun4i: calculate proper DCLK rate for DSI >> >> XuDong Liu (1): >> drm: sun4i_tcon: use devm_clk_get_enabled in `sun4i_tcon_init_clocks` >> >> As I wrote in IRC, I highly suspect >> 4795c78768bcbd58d4ffab650674d314dc6dd77 "drm: sun4i: calculate proper >> DCLK rate for DSI" to be the culprit here. To confirm, you could try >> reverting it or the other two. >> > > Thanks for advices. I found that the bug was introduced in the kernel > pre-6.5 after the rc1 with this patch: > > https://lore.kernel.org/all/[email protected]/ > > For newer kernel the workaround you suggested, disabling > CLK_SET_RATE_PARENT, works fine. >
What you are saying means that in 6.5 the Teres-I doesn't work with pll-mipi, but with 6.6 + disabling CLK_SET_RATE_PARENT it does. That is quite confusing for me. I should try to get one of those on my desk for testing. Thank you for your analysis! Best regards, Frank > > Thanks again, > Diego. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/871q9jyw7e.fsf%40oltmanns.dev.
