raspberrypi
config.txt core_freq=499 causes camera error
Describe the bug
setting core_freq=499 causes the camera to error.
Steps to reproduce the behaviour
attach pi camera apt install rpicam-apps-lite libcamera-hello (works. good)
vim /boot/firmware/config.txt add core_freq=499 reboot
libcamera-hello ... [0:00:32.157091886] [791] ERROR V4L2 v4l2_videodevice.cpp:1906 /dev/video0[13:cap]: Failed to start streaming: Invalid argument
dmesg [ 251.039813] unicam fe801000.csi: failed to set up VPU clock
Device (s)
Raspberry Pi 4 Mod. B
System
https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2024-03-15/2024-03-15-raspios-bookworm-armhf-lite.img.xz
07:48:28 pi@pi3:~ $ cat /etc/rpi-issue Raspberry Pi reference 2024-03-15 Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 11096428148f0f2be3985ef3126ee71f99c7f1c2, stage2
07:51:48 pi@pi3:~ $ vcgencmd version Feb 29 2024 12:24:53 Copyright (c) 2012 Broadcom version f4e2138c2adc8f3a92a3a65939e458f11d7298ba (clean) (release) (start)
07:52:15 pi@pi3:~ $ uname -a Linux pi3 6.6.20+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 (2024-03-07) aarch64 GNU/Linux
Logs
No response
Additional context
I have over 10 pies w/camears, all running the same everything. core_freq=250 works fine on all but one. seems odd. there is a chance the camera is different as not all cameras were bought at the same time.
dmesg [ 251.039813] unicam fe801000.csi: failed to set up VPU clock
which seems to come from: https://github.com/raspberrypi/linux/blob/477f26fb73b8c73dea6503f62992d53ce0f3b00c/drivers/media/platform/bcm2835/bcm2835-unicam.c#L99
This also seems relevant: https://github.com/raspberrypi/linux/blob/rpi-6.6.y/drivers/media/platform/bcm2835/bcm2835-unicam.c#L98-L102
