misc/58109: Add a DTS file for the ALINX AX7021B Zynq based board

[lloyd%must-have-coffee.gen.nz@localhost]

>Number:         58109
>Category:       misc
>Synopsis:       Add a DTS file for the ALINX AX7021B Zynq based board
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    misc-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 03 21:25:00 +0000 2024
>Originator:     Lloyd Parkes
>Release:        current
>Organization:
Must Have Coffee
>Environment:
NetBSD armv7 10.99.10 NetBSD 10.99.10 (GENERIC) #3: Mon Apr  1 11:12:36 NZDT 2024  lloyd%kudzu.must-have-coffee.gen.nz@localhost:/vol/build/zybo2/objdir.evbearmv7hf-el/sys/arch/evbarm/compile/GENERIC evbarm
>Description:
NetBSD won't boot on an ALINX AX7021B because it doesn't have a suitable FDT.

>How-To-Repeat:
Run the following commands in U-Boot.

setenv bootargs root=ld0a
fatload mmc 0 $kernel_addr_r netbsd-GENERIC.ub
fatload mmc 0 $fdt_addr_r dtb/ax7021b.dtb
bootm $kernel_addr_r - $fdt_addr_r

or

setenv bootargs root=ld0a
fatload mmc 0 $kernel_addr_r netbsd-GENERIC.ub
bootm $kernel_addr_r -

>Fix:
Apply the following two patches

https://www.must-have-coffee.gen.nz/lloyd/sys-dtb-arm-Makefile.patch
https://www.must-have-coffee.gen.nz/lloyd/distrib-sets-lists-dtb.patch

Add the following file to src/sys/arch/arm/dts/

https://www.must-have-coffee.gen.nz/lloyd/ax7021b.dts

These patches add the new .dts file to the DTS list and the resulting .dtb file to the dtb mtree sets. I used "make update-sets" to regenerate the file lists.