Re: [PATCH 4.19.y-cip 01/12] arm64: dts: renesas: r8a774a1-hihope-rzg2m[-ex/-ex-idk-1110wr]: Rename HiHope RZ/G2M boards


Biju Das <biju.das.jz@...>
 

Hi Pavel,

Thanks for the feedback.

Subject: Re: [PATCH 4.19.y-cip 01/12] arm64: dts: renesas: r8a774a1-hihope-
rzg2m[-ex/-ex-idk-1110wr]: Rename HiHope RZ/G2M boards

Hi!

I believe it would be better to always use explicit revision in
these cases; anything else is fairly confusing, as kernel update
breaks your setup (aka a regresssion).

Now, if -rev2 had few copies, and people really have -rev4, there
will not be much breakage. But imagine if rare -rev5 is released in
future...

But mainline already made the choice. I'd just prefer not making
same choice in future.

Now, what to do here? One way would be to apply a series, but add a
README.cip file explaining incompatible change (and any future stuff
people need to know).
OK. Either README.cip or " by including more information on the reference
hardware and test information on CIP wiki." as suggested by Nobuhiro.
Please let us know, How do we want to proceed?
I guess we should really have README file in the tree, explaining potential
compatibility issues and anything unusual happening in the tree. I went
through old changelogs, and collected these for 4.19
tree:

* -cip3: MDS sampling vulnerability fixes

This release includes many CVE fixes including MDS (Microarchitectural Data
Sampling: CVE-2018-12130, CVE-2018-12126, CVE-2018-12127, CVE-2019-
11091). These fixes were more extensive and harder to review than usual for
-stable tree.

* -cip9: m57621-mmc driver was removed

m57621-mmc driver was removed due to uncertainty about its licensing.

* -cip34: Support for Renesas RZ/G2[MN] revision 4 board

In -cip34, support for revision 4 of the board was merged. After the merge,
r8a774a1-hihope-rzg2m*.dtb files are suitable for revision 4 of the board; if
you want to produce dtb files for revision 2 of the board, append -rev2 to the
file names.

---

Does that sound ok?
Yes, It looks good to me.

Cheers,
Biju


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