On 1/9/26 12:00 AM, Val Packett wrote: > > On 1/7/26 8:44 AM, Petr Hodina via B4 Relay wrote: >> From: Petr Hodina <[email protected]> >> >> Add CLK_OPS_PARENT_ENABLE to MDSS pixel clock sources to ensure parent >> clocks are enabled during clock operations, preventing potential >> stability issues during display configuration. >> >> Fixes: 81351776c9fb ("clk: qcom: Add display clock controller driver for >> SDM845") >> Signed-off-by: Petr Hodina <[email protected]> >> --- >> We are currently running the latest linux-next snapshots (next-202511* >> and next-202512*) and have encountered random freezes and crashes on the >> Pixel 3, as well as crash dumps on the OnePlus 6 and 6T. >> >> This commit fixes the stability issue. I've checked other SDM dispcc >> files and they also contain this configuration. > > Hm, we don't have this flag set in dispcc-x1e80100.c either! > > The only random freeze we have on that platform seems related to PCIe ASPM > with NVMe drives, but during display configuration.. *extremely* rarely, but > the eDP display output can get stuck on a blue screen. Many run with > clk_ignore_unused for the early uefi framebuffer though.
Your device doesn't have a DSI-attached display The Linux clock controller representation of the DSI PHY implements an actually meaningful set of operations that (un)gate the clock Both DP and eDP PHYs just provide funny fixed clocks to make the clock tree resonable and filter allowed rates Konrad
