[Tinkerphones] CI20 - was Re: New LetuxOS Kernels and some tricks and thoughts

[H. Nikolaus Schaller]

Hi Paul,

> Am 09.06.2019 um 18:01 schrieb Paul Boddie <paul at boddie.org.uk>:
> 
> On Tuesday 21. May 2019 14.12.22 Paul Boddie wrote:
>> On Tuesday 21. May 2019 10.22.50 H. Nikolaus Schaller wrote:
>>> What else is going on in the LetuxOS eco-system?
>>> 
>>> We now support MIPS devices, not only ARM. Well one. The Imagination CI20
>>> board. Just do "makesd ci20" to get a first SD card.
>> 
>> I'll have to stop procrastinating and try this now. Well done for getting to
>> the bottom of the kernel configuration problems, too!
> 
> Ignoring the investigations into configuration and deployment tools, I did 
> manage to compile an upstream kernel for the CI20 today. Choosing the 5.1.8 
> kernel, on the CI20 itself, I did the usual...
> 
> make ci20_defconfig
> make
> make uImage
> 
> Installing the uImage to /boot and rebooting actually worked without any 
> problems.

Great!

You could also try the latest

http://git.goldelico.com/?p=letux-kernel.git;a=shortlog;h=refs/heads/letux-5.1.8

with letux_defconfig.

The main differences are
* adds your JZ4730 code (but does not make use it, obviously)
* some diffs in the defconfig
* prepared to build pvrsrv.ko

> I was able to ssh into the CI20 and find it over the network again! 

Yes, Ethernet and ssh seems to work.

> So, thanks to the hard work done by Mathieu and others, this went surprisingly 
> well.
> 
> Paul

What I have observed that it is not working:
* USB
* HDMI
* Camera
* PVR/SGX (obviously)
* untested: Audio
* untested: Infrared (?). LED0..3, SW1
* untested: Wireless

Does any of these work for you?

BR,
Nikolaus