On Tue, Oct 13, 2026 at 12:34 PM Pengyu Luo <[email protected]> wrote: > > On Tue, Oct 13, 2026 at 7:53 AM Qianhui Xu <[email protected]> > wrote: > > > > Hi, > > > > We are bringing up a Lenovo Legion Y700 (2025) tablet, TB322FC / Qualcomm > > SM8750P, with a Novatek NT36536 panel (1904x3040, DSC, video mode) driven by > > bonded dual DSI (ae94000.dsi master, ae96000.dsi peer). Our tree is > > GEEKiDOS/linux, a 7.2-based tree that carries the bonded command path > > (dsi_mgr_bonded_cmd_xfer() plus the "bonded command DMA failed" / "peer > > command > > DMA timeout" messages). We could not find that path in the vanilla 7.2 > > sources > > we compared against, so question 1 is partly whether it is > > upstream-supported > > at all. > > > > In a word, the panel driver is supported, the DPU may not be. > > I think most drivers for dual dsi dual dsc panels in the upstream are > alright, but they may still not work due to the DPU. Once I upstreamed > partial patches, but it is not enough, we need more, like we need to > hack the dsi clk source select for the 10-bit CPHY plane, etc. > Integrating such kind of patch to upstream is time-consuming and > troublesome for me. Even if it works in Ver, nobody would ensure that > it still works in Ver + 0.1, as there would be many features and > regressions for the DPU when promotion. > > I cannot help with this for now, sorry about that, I have not focused > on this for a while due to things irl, You can find some threads in > LKML about 10bpc 10bpp support on DPU discussions that I was involved > in, it may give you some insight. You can also find some records about > bringup, for instance, please check the image in this thread if you
OOPS, the thread is https://lore.kernel.org/all/cah2e8h4vp9fjyauubomohskb25wakpbvmpwa62btrqgrqbm...@mail.gmail.com Best wishes, Pengyu > are confused about if it is __really__ supported(i.e. > https://postimg.cc/xJr11DK5, and another snapshot for GPU bringup > https://postimg.cc/0zz30h8P). > > Best wishes, > Pengyu
