pinctrl: SAMx7x: Fix incorrect pinctrl config for pa21

[mcscholtz]

The pinctrl configuration for SAMx7x SOC pa21 is incorrect. Instead of afe1_ad1 it should be afe0_ad1.

This updates the pinconfigs yml file and all the updated header files.

See the associated datasheet section:

[nandojve]

Hi @mcscholtz ,

Thank you for fixing this. Where is the Zephyr side to update hal ?
It should be linked here.

[mcscholtz]

@nandojve I was under the impression it needs to be merged before creating the Zephyr PR to update west.yml?

Or do I update it to commit: 122f969 and create a PR for that?

[nandojve]

@nandojve I was under the impression it needs to be merged before creating the Zephyr PR to update west.yml?

No, you need create PR in Zephyr to pass CI. When you open the PR you need replace the current hash code by pull/36/head. If CI is green (in this case will be) we merge the PR 36 here. After that you update the Zephyr counter part with the new hash and get the approvals.

Since this is a simple update hal case, you can a PR in Zephyr to sync hal_atmel only, for instance:

commit 812187a87f3f056c1052b7a5cd64d0a942e2a488
Author: Keith Packard <[email protected]>
Date:   Thu Mar 30 10:16:22 2023 -0700

    west.yml: update hal_atmel to include picolibc compat fix
    
    This update removes the LITTLE_ENDIAN/__LITTLE_ENDIAN defines in all of the
    chip-specific headers as those conflict with usage of these macros in
    picolibc.
    
    Signed-off-by: Keith Packard <[email protected]>

If it is necessary to update anything here I'll ask you to send the update here before open the Zephyr PR.

I hope it is more clear now, otherwise, let me know.

[mcscholtz]

@nandojve Thank you for the explanation

I created the PR, looks like the bot already linked it here