Hi Stefan,
> Am 19.01.2025 um 01:36 schrieb Stefan Wahren <wahrenst@xxxxxxx>:
>
> Hi,
>
> Am 18.01.25 um 17:27 schrieb H. Nikolaus Schaller:
>> This reverts commit 27ab05e1b7e5c5ec9b4f658e1b2464c0908298a6.
>>
>> I tried to upgrade a RasPi 3B+ with Waveshare 7inch HDMI LCD
>> from 6.1.y to 6.6.y but found that the display is broken with
>> this log message:
>>
>> [ 17.776315] vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_drm_unregister [vc4])
>> [ 17.784034] platform 3f806000.vec: deferred probe pending
>>
>> Some tests revealed that while 6.1.y works, 6.2-rc1 is already broken but all
>> newer kernels as well. And a bisect did lead me to this patch.
> I successfully tested every Kernel release until Linux 6.13-rc with the
> Raspberry Pi 3B+, so i prefer to step back and analyze this issue further.
Yes, I would be happy with any solution.
> What kernel config do you use ?
a private one which enables application specific drivers.
> What is the value of CONFIG_CLK_RASPBERRYPI ?
CONFIG_CLK_RASPBERRYPI is not set
I checked where this is defined and it is in bcm2835_defconfig and
multi_v7_defconfig by
4c6f5d4038af2c ("ARM: defconfig: enable cpufreq driver for RPi")
which hides this requirement quite well and got therefore unnoticed...
Setting CONFIG_CLK_RASPBERRYPI=y makes HDMI work without my proposed revert.
Tested with v6.2.16, v6.6.72, v6.12.10 and v6.13-rc7.
BR and thanks,
Nikolaus
