Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck

From	Ben Hutchings <benh@debian.org>
Newsgroups	linux.debian.kernel, linux.debian.maint.boot, linux.debian.bugs.dist
Subject	Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck
Date	2017-07-17 23:20 +0200
Message-ID	<u4lAR-1PS-3@gated-at.bofh.it> (permalink)
References	<u4lAR-1PS-5@gated-at.bofh.it> <tX1GV-35M-9@gated-at.bofh.it> <u2Pa1-7UJ-3@gated-at.bofh.it> <u2ROx-1dB-3@gated-at.bofh.it>
Organization	Debian project

Cross-posted to 3 groups.

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On Thu, 2017-07-13 at 21:16 +0200, Karsten Merker wrote:
[...]
> many thanks for tracking this down to the watchdog driver.  We
> had experienced the effect that rebooting from within d-i didn't
> work properly on several sunxi-based systems, but hadn't found
> the actual cause yet.  I've tried to do a bit of further research
> and it looks like sunxi-based platforms are somewhat special in
> requiring the watchdog even for the normal system reset
> functionality and not only for an actual watchdog function.
> I haven't found indicators for similar dependencies on other
> platforms during my search, but of course they might exist
> nonetheless.
> 
> Ben, do you know of any other platforms that require a watchdog
> driver for a "normal" system reset?

No, but then I'm not an ARM porter.

> If sunxi is the sole "odd" platform here, I suppose the best
> solution would be to integrate the sunxi_wdt module directly into
> the kernel-image-<version>-armmp-di udeb.

Any driver like this that is needed for basic functionality in every
installer flavour should go into kernel-image.

So I've made this change on the stretch and sid branches for armhf.

> Probably we will need
> to include it for arm64 as well, as AFAIK the 64bit Allwinner
> SoCs A64 and H5 use the same watchdog logic as the older 32bit
> SoCs.  Proper support for A64 and H5 will be available in kernel
> 4.13, so those will become target platforms for d-i in the nearer
> future.

I'll add 'sunxi_wdt ?' for arm64 now so this should work right once we
actually enable the driver.

Ben.

-- 
Ben Hutchings - Debian developer, member of kernel, installer and LTS teams

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Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck Cyril Brulebois <kibi@debian.org> - 2017-07-13 18:30 +0200
  Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck Karsten Merker <merker@debian.org> - 2017-07-13 21:20 +0200
    Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck Cyril Brulebois <kibi@debian.org> - 2017-07-14 22:10 +0200
    Re: Bug#866130: Missing sunxi_wdt.ko for cubietruck Ben Hutchings <benh@debian.org> - 2017-07-17 23:20 +0200

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