Hi Nicolas,
Why were there camera nodes in the 4.14 kernel? Isn’t this also used by DB820c?
Thanks,
Kim
From: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Sent: Monday, December 19, 2022 1:35 AM
To: Kim Steiner <kim.steiner@sightlineapplications.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>; Jordan Holt <jordan.holt@sightlineapplications.com>; Paul Neuhardt <paul.neuhardt@linaro.org>; sightlineapplications@lists.linaro.org
Subject: Re: [Sightlineapplications] Re: Project Status and Burn Report
On Thu, Dec 15, 2022 at 3:20 PM Kim Steiner <kim.steiner@sightlineapplications.com> wrote:
Hi. We were talking about camera testing on the DB820c yesterday and Linaro said that no camera has been tested. I asked Penguin Solutions how things are going with their patches. They said there are no camera nodes in the device tree. I noticed this too and had to add my own camera nodes. Is this something that you would have to add in order to test a camera on the DB820c?
Yes, you are correct. We never sent upstream the camera support in the 820c DTS, the main reason is that QCOM never really shipped an official mezzanine for the 820c that has camera, even today it's difficult to get the hardware. The 820c
DTS upstream describes the 820c as you can 'buy' it. But there is camera (camss) support in the msm8996.dtsi platform, so that any 8996 based board can use camera, once they configure the camera nodes in the corresponding DTS.
Once we start working on your custom hardware, we can help review the DTS.
Thanks,
Kim
-----Original Message-----
From: Kim Steiner
Sent: Wednesday, December 14, 2022 2:17 PM
To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>; Jordan Holt <jordan.holt@sightlineapplications.com>
Cc: Paul Neuhardt <paul.neuhardt@linaro.org>; sightlineapplications@lists.linaro.org
Subject: RE: [Sightlineapplications] Re: Project Status and Burn Report
Thanks Dmitry. I will test this later this week.
Attached is the DB820C boot up and .config. I disabled CONFIG_BT, CONFIG_SND, and CONFIG_CFG80211, but I still see a CONFIG_WIRELESS enabled. I've attached a snapshot of the DB820c as well.
Also, we were running a 1280x720 @60 fps when we saw the capture/display glitch when capture and encoding.
I will get back to you about the bootloader when I figure that out.
Thanks,
Kim
-----Original Message-----
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Sent: Wednesday, December 14, 2022 10:14 AM
To: Kim Steiner <kim.steiner@sightlineapplications.com>; Jordan Holt <jordan.holt@sightlineapplications.com>
Cc: Paul Neuhardt <paul.neuhardt@linaro.org>; sightlineapplications@lists.linaro.org
Subject: Re: [Sightlineapplications] Re: Project Status and Burn Report
Hi Kim,
On 08/12/2022 16:03, Kim Steiner wrote:
> Hi Dmitry,
>
> I did some more testing on the DB820C. I see a couple of more boot up failures.
As promised, quick and dirty patch to unlock CPU frequencies.
Using this patch I got the following frequencies after bootup:
root@linaro-alip:~# cpufreq-info | grep current
current policy: frequency should be within 307 MHz and 1.59 GHz.
current CPU frequency is 1.59 GHz (asserted by call to hardware).
current policy: frequency should be within 307 MHz and 1.59 GHz.
current CPU frequency is 1.59 GHz (asserted by call to hardware).
current policy: frequency should be within 307 MHz and 2.15 GHz.
current CPU frequency is 2.00 GHz (asserted by call to hardware).
current policy: frequency should be within 307 MHz and 2.15 GHz.
current CPU frequency is 2.00 GHz (asserted by call to hardware).
--
With best wishes
Dmitry
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