Re: Failure to stop CAMSS stream (sc8280xp)

[Bryan O'Donoghue <bryan.odonoghue@linaro.org>]

On 03/07/2024 14:07, Johan Hovold wrote:
> Is this a known issue with CAMSS or is something missing in the sc8280xp
> integration?

A known issue on my end, I also want to root cause intermittent sensor 
startup failure, before switching on the sensor upstream for more common 
use.


> I'm using the following (squashed) devicetree patch from Bryan to enable
> the camera (everything else is upstream):
> 
> 	https://github.com/jhovold/linux/commit/85b41b8d0efd418509df548592f95b43b9663409
> 
> The issue was there with 6.9 as well so it's not a (recent) regression.
> 
> Probing the camera sometimes, but infrequently, also fails with:
> 
> 	qcom-camss ac5a000.camss: Failed to power up pipeline: -13

Yes this. If you recall on the pm8010 I had mentioned to you about a 
wait-time to startup the regulator - thinking it was the regulator 
causing this error.

More likely the GPIO reset polarity or delay needs to be tweaked in the 
sensor driver.

> and I'm seeing the following warning on every boot:
> 
> 	i2c-qcom-cci ac4c000.cci: Found 19200000 cci clk rate while 37500000 was expected

That's hanging around for quite a long time 19.2 MHz is a perfectly 
valid clock, useless error message.

---
bod