Hi Denys,
Should be easy enough to test it quickly as a proof of concept, thank you.
Will bitbake know to compile this overlay, tell the u-boot to load it and
so on?
On December 22, 2023 02:49:39 Denys Dmytriyenko <[email protected]> wrote:
You could simply add your overlay in one of the conf files, such as
local.conf:
KERNEL_DEVICETREE += "your-overlay.dtbo"
Check the existing machine conf files for examples.
On Thu, Dec 21, 2023 at 08:51:49PM +0000, Lukasz Przenioslo wrote:
Hi Jon,
I guess the first option is more feasible, as I would not like to
modify any files provided by the Poky repo, but rather create my own
recipe that would somehow cover the default settings during the
build. There is still a lot ahead for me to understand though...
Thank you for the useful links.
--
Łukasz Przeniosło
------ Original Message ------
From "Jon Cormier" <[email protected]>
To "Bremenpl" <[email protected]>
Cc [email protected]
Date 2023-12-21 16:17:38
Subject Re: [meta-ti] Custom device tree overlay for BBB
>This solution seems like a good place to start. I haven't tried it
>myself but it looks clean and easy to implement.
>https://stackoverflow.com/a/68650774
>
>The alternative would be to bbappend the kernel and patch your
>overlay into the correct folder.
>https://stackoverflow.com/a/39343720
>
>On Thu, Dec 21, 2023 at 10:03 AM Bremenpl <[email protected]> wrote:
>>Hi and thank you for the answer Jonathan!
>>
>>Do you happen to also know a good reference on how to
>>incorporate an overlay into the yocto build?
>>
>>On December 21, 2023 15:58:56 Jon Cormier
>><[email protected]> wrote:
>>
>>>Here is a possible example overlay that configures pinmuxes
>>>with the expectation that the pru's will use them. There is
>>>likely a similar example in that long list of overlays that
>>>disables hdmi.
>>>
>>>https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/AM335X-PRU-RPROC-4-19-TI-PRUCAPE-00A0.dts
>>>
>>>Note its entirely possible these examples won't build or apply
>>>correctly on a different kernel version, but they should still
>>>be a decent starting point.
>>>
>>>On Thu, Dec 21, 2023 at 6:34 AM Lukasz Przenioslo
>>><[email protected]> wrote:
>>>>Hello there,
>>>>
>>>>I was able to compile the Poky image (Dunfell) with meta-ti
>>>>included for the BBB. I am working on an open source project
>>>>intended for home automation based on the BBB:
>>>>https://github.com/Beaglenode/BeagleNodeHW
>>>>
>>>>The next step I am trying to make is to prepare a proper
>>>>device tree overlay that would align with the HW
>>>>requirements of this project (or "cape"). I need to:
>>>>- Disable the HDMI pins,
>>>>- configure multiple pins as either PRU0 or PRU1 controlled.
>>>>
>>>>For that I thought the best approach would be to prepare a
>>>>DTO, instead of modifying the default one for BBB. I don't
>>>>know how to prepare that DTO yet and I don't know how to
>>>>include it in my build. I would like to ask for some help in
>>>>this manner, especially the prior part (how to load the
>>>>custom DTO). Right now I am still modifying everything in
>>>>the local.conf, as I do not have the knowledge yet to build
>>>>my own distro for this device (that's the end plan).
>>>>
>>>>I would appreciate all help!
>>>>
>>>>
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