Hi,
On 10/20/25 16:15, Konrad Dybcio wrote:
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]/
Thanks,
Neil
Konrad
