On 4.12.2023 10:55, Stephan Gerhold wrote:
> Looks like not all firmware versions used for MSM8939 program the timer
> frequency for both broadcast/MMIO timers, causing a WARNING at runtime:
>
> WARNING: CPU: 0 PID: 0 at kernel/time/clockevents.c:38 cev_delta2ns+0x74/0x90
> pc : cev_delta2ns+0x74/0x90
> lr : clockevents_config.part.0+0x64/0x8c
> Call trace:
> cev_delta2ns+0x74/0x90
> clockevents_config_and_register+0x20/0x34
> arch_timer_mem_of_init+0x374/0x534
> timer_probe+0x88/0x110
> time_init+0x14/0x4c
> start_kernel+0x2c0/0x640
>
> Unfortunately there is no way to fix the firmware on most of these
> devices since it's proprietary and signed. As a workaround, specify the
> clock-frequency explicitly in the DT to fix the warning.
>
> Fixes: 61550c6c156c ("arm64: dts: qcom: Add msm8939 SoC")
> Reported-by: Vincent Knecht <vincent.knecht@xxxxxxxxxx>
> Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx>
> ---
Ouch.
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Konrad
