On 10/20/25 4:05 PM, [email protected] wrote: > Hi, > > On 5/7/25 03:38, Jessica Zhang wrote: >> Filter out modes that have a clock rate greater than the max core clock >> rate when adjusted for the perf clock factor >> >> This is especially important for chipsets such as QCS615 that have lower >> limits for the MDP max core clock. >> >> Since the core CRTC clock is at least the mode clock (adjusted for the >> perf clock factor) [1], the modes supported by the driver should be less >> than the max core clock rate. >> >> [1] >> https://elixir.bootlin.com/linux/v6.12.4/source/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c#L83 >> >> Reviewed-by: Dmitry Baryshkov <[email protected]> >> Signed-off-by: Jessica Zhang <[email protected]> > > This change breaks the T14s OLED display, no modes are reported on the eDP > connector. > msm_dpu ae01000.display-controller: [drm:update_display_info.part.0 [drm]] > [CONNECTOR:41:eDP-1] Assigning EDID-1.4 digital sink color depth as 10 bpc. > msm_dpu ae01000.display-controller: [drm:update_display_info.part.0 [drm]] > [CONNECTOR:41:eDP-1] ELD monitor > msm_dpu ae01000.display-controller: [drm:update_display_info.part.0 [drm]] > [CONNECTOR:41:eDP-1] ELD size 20, SAD count 0 > [drm:drm_mode_object_put.part.0 [drm]] OBJ ID: 113 (1) > msm_dpu ae01000.display-controller: [drm:drm_mode_prune_invalid [drm]] > Rejected mode: "2880x1800": 120 652260 2880 2912 2920 2980 1800 1808 1816 > 1824 0x48 0x9 (CLOCK_HIGH) > msm_dpu ae01000.display-controller: [drm:drm_mode_prune_invalid [drm]] > Rejected mode: "2880x1800": 60 652260 2880 2888 2920 2980 1800 1808 1816 3648 > 0x40 0x9 (CLOCK_HIGH) > > With this reverted on v6.18-rc, display works again.
https://lore.kernel.org/linux-arm-msm/[email protected]/ Konrad
