[PATCH v2 1/2] arm: dts: aspeed: add an alt 128M flash layout

[Andrew Jeffery]

Hi Marc,

Regarding the subject prefix, can you please capitalise the 'ARM' portion, so:

   ARM: dts: aspeed: add an alt 128M flash layout

That way it's consistent with the rest of history.

On Thu, 2025-12-18 at 10:48 -0800, Marc Olberding wrote:
> Add a 128M layout for the BMC flash chip we didn't boot from. Including
> this allows the user to write to each partition on the alternate spi
> chip. This dtsi follows the existing standard of using the same layout
> as non alt version and prepending `alt` to each partition's name.
> 
> Testing: Include this in msx4 and cat size, offsets and name

I think this would be better with s/Testing/Tested by/ and associated
grammar fixes.

> ```
> for devdir in /sys/class/mtd/mtd*; do
> >     [[ -d $devdir && -r $devdir/name ]] || continue
> >     name=$(<"$devdir/name")
> >     [[ $name == alt* ]] || continue
> > 
> >     size=$(<"$devdir/size")
> >     offset=0
> >     [[ -r $devdir/offset ]] && offset=$(<"$devdir/offset")
> > 
> >     dev=$(basename "$devdir")
> >     printf "%s name=%s offset=0x%X size=0x%X\n" "$dev" "$name" \
> >        "$offset" "$size"
> > done
> mtd10 name=alt-rofs offset=0xA00000 size=0x5600000
> mtd11 name=alt-rwfs offset=0x6000000 size=0x2000000
> mtd7 name=alt-u-boot offset=0x0 size=0xE0000
> mtd8 name=alt-u-boot-env offset=0xE0000 size=0x20000
> mtd9 name=alt-kernel offset=0x100000 size=0x900000
> ```

Can you rather remove the markdown codeblock and instead indent the
code snippet (IMO 4 spaces is fine)?

Also the shell continuation markers seem a little unfortunate. Maybe
just drop them for clarity? You can separate the output from the
script.

I also found this helpful:

    diff -u arch/arm/boot/dts/aspeed/openbmc-flash-layout-128{,-alt}.dtsi

Andrew