Raspberrypi3: Mini UART driver

[Christian Mauderer]

On 28/12/2019 07:12, Niteesh wrote:
> 
> 
> On Sat, 28 Dec, 2019, 3:51 AM Christian Mauderer, <list at c-mauderer.de
> <mailto:list at c-mauderer.de>> wrote:
> 
>     On 27/12/2019 19:06, Niteesh wrote:
>     > Is there something else that I could work on? I am interested in
>     taking
>     > part 
>     > GSOC of 2020. And I want to learn as much as possible.
> 
>     Do you search tasks specific to raspberry or general ones? Do you search
>     something for GSoC or just to warm up?
> 
> Anything is fine as long as I am learning something. Since rpi3 is the
> only hardware I have, I am interested in tasks specific to raspi and
> general ones which do not require any hardware.

For raspberry I think you could continue to get it running on RPi3. My
suggestion would be to replace the table based initialization (which is
handled by console-termios-init.c) with one based on the fdt that is
similar to the one in the imx BSP. That will allow to use the same
binary on RPi2 and RPi3. But please do that in an extra patch after the
one that you currently have sent to the mailing list.


Some other raspberry specific topics could be the following. Note that
this are only suggestions. I don't want to force you to do any of them
if you don't like them:

- Documentation how you run an application in QEMU / on real hardware
for the user manual:
https://docs.rtems.org/branches/master/user/bsps/bsps-arm.html#raspberrypi
(I hope I didn't miss a patch that you already sent ;-) )

- A configuration for RTEMS tester that uses the QEMU or real hardware
(I think the pi3 allows network boot?). This allows regular test runs
for this BSP:
https://docs.rtems.org/branches/master/user/testing/index.html and
https://docs.rtems.org/branches/master/user/tools/tester.html

- Chris created a boot image generator last year. It would be great if
you could add a configuration to create raspberry SD images to it:
https://docs.rtems.org/branches/master/user/tools/boot-image.html

- You can pick basically any component that isn't already there and
integrate it. If you want to work with libbsd: Testing or porting
Ethernet support could be something.

- You most likely want to do something with RPi in your GSoC too. So
maybe some comments ("x is already done", "y seems to be still open")
for the ticket for it would be nice too: https://devel.rtems.org/ticket/2899


For non raspberry topics: We have a lot of open bugs where everyone is
happy if they are closed: https://devel.rtems.org/query

A lot of them might are even out of date and just need someone who reads
them and asks whether they can be closed.

> 
> 
>     >
>     > On Fri, Dec 27, 2019 at 5:07 PM Christian Mauderer
>     <list at c-mauderer.de <mailto:list at c-mauderer.de>
>     > <mailto:list at c-mauderer.de <mailto:list at c-mauderer.de>>> wrote:
>     >
>     >     On 27/12/2019 12:20, Niteesh wrote:
>     >     > I have sent the patch. I also sent a documentation update
>     for the
>     >     > quick-start section
>     >     > a few months ago. But no one took a look at it. Can you have a
>     >     look at it?
>     >
>     >     I'll try to have a look at it soon.
>     >
>     >     >
>     >     > https://www.mail-archive.com/devel@rtems.org/msg20965.html
>     >
>     >     If you don't get any responses to a patch please just send a
>     reminder
>     >     one or two weeks later. It's quite likely that the patch just
>     slipped
>     >     the attention.
>     >
>     >     Normally I leave documentation patches to our native speakers.
>     They spot
>     >     a lot of errors that I won't be able to find.
>     >
>     >     Can you please send a ping for the patch. You can add me to CC
>     and for
>     >     this one I would suggest to CC Chris Johns too.
>     >
>