Add TI J721e R5 and BeagleBone AI64 R5 initial support

[slpp95prashanth]

This PR (non-working port) adds device tree and soc support for TI J721e_r5 and Beaglebone AI64 board support for hello_world application.

TRM for J721e https://www.ti.com/lit/zip/spruil1
File: spruil1c.pdf

BeagleBone AI_64 https://beagleboard.org/ai-64

Signed-off-by: Prashanth S [email protected]

[github-actions]

Hello @slpp95prashanth, and thank you very much for your first pull request to the Zephyr project!

A project maintainer just triggered our CI pipeline to run it against your PR and ensure it's compliant and doesn't cause any issues. You might want to take this opportunity to review the project's Contributor Expectations and make any updates to your pull request if necessary. 😊

[cfriedt]

I thought that filenames in the board directory should match the board name. I think that's a convention.

[carlocaione]

I'm quite strongly opinionated about adding support in-tree for a board without an interrupt controller and only with the hello world sample running. The feature set for a new SoC / board should be enough to at least pass the kernel tests.

[carlocaione]

I'm tired of this.

Did you at least try to compile this?

# west build -b beagle_bbai64_r5 samples/hello_world -p

dts/arm/ti/j721e.dtsi:10:10: fatal error: zephyr/dt-bindings/interrupt-controller/ti-vim.h: No such file or directory
   10 | #include <zephyr/dt-bindings/interrupt-controller/ti-vim.h>

I honestly feel you are wasting mine and maintainers time here. I'm going to remove myself from this PR.

[carlocaione]

remove if not needed

[slpp95prashanth]

@carlocaione j721e_init is passed to SYS_INIT as a initialisation function.

[gmarull]

+1, drop if empty

[slpp95prashanth]

Can we pass NULL as a first argument to SYS_INIT()?

[gmarull]

what's the point of a no-op SYS_INIT...?

[slpp95prashanth]

Removing SYS_INIT() and j721e_init().

[vaishnavachath]

@slpp95prashanth , sorry for the late response, but you will need to atleast unlock the CTRL MMR regions during, all the necessary regions might not always be unlocked by bootloader for you.
See https://github.com/zephyrproject-rtos/zephyr/blob/main/soc/arm/ti_k3/am62x_m4/soc.c#L47

I'm out

[slpp95prashanth]

I'm tired of this.

Did you at least try to compile this?

# west build -b beagle_bbai64_r5 samples/hello_world -p

dts/arm/ti/j721e.dtsi:10:10: fatal error: zephyr/dt-bindings/interrupt-controller/ti-vim.h: No such file or directory
   10 | #include <zephyr/dt-bindings/interrupt-controller/ti-vim.h>

I honestly feel you are wasting mine and maintainers time here. I'm going to remove myself from this PR.

@carlocaione
Yes I compiled and tested.

I apologize, but this PR depends on #60856 and #61020 which is mentioned in #59191 (comment).

I do not have any intention to waste yours and maintainers time, please do not say like that.

[jadonk]

Why is example capitalized?

I should have read this section before commenting above. I was thinking you were talking about west flash. Can you implement west flash to flash the image and provide documentation on what it does?

[slpp95prashanth]

Yes, I can implement west flash for this.

[gmarull]

why not implement a proper runner so you can west flash?

[gmarull]

?

[slpp95prashanth]

@KarthikL1729 can you please update this?

[gmarull]

-1, please make sure drivers select this

[slpp95prashanth]

@gmarull should I remove this from here, and add "select PINCTRL" in drivers.
Or select at both places.

[gmarull]

+1, drop if empty

[slpp95prashanth]

I am adding west flash support, I will try to add ASAP.

[github-actions]

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