linux-kernel - Re: [PATCH v2] regulator: core: Use different devices for resource allocation and DT lookup

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Message-ID: <Y5nQYom7SsbFnir+@sirena.org.uk>
Date:   Wed, 14 Dec 2022 13:32:18 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     ChiYuan Huang <u0084500@...il.com>, djrscally@...il.com,
        hdegoede@...hat.com, markgross@...nel.org, lgirdwood@...il.com,
        mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com,
        yangyingliang@...wei.com, gene_chen@...htek.com,
        chiaen_wu@...htek.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        ChiYuan Huang <cy_huang@...htek.com>
Subject: Re: [PATCH v2] regulator: core: Use different devices for resource
 allocation and DT lookup

On Tue, Dec 13, 2022 at 11:23:01PM +0100, Marek Szyprowski wrote:
> On 13.12.2022 17:32, Mark Brown wrote:

> > Thanks for jumping on this so quickly!  Marek, are these boards (or
> > similar ones) generally available?  They seem great at showing up issues
> > so it'd be good if I could get them into my CI and spot problems earlier
> > (or something like kernelci.org would be about as good)?

> Well, they are quite old, but I've seen some used ones on eBay. Just 
> look for "Samsung Chomebook XE503C12" (Peach-Pit) or XE503C32 (Peach-Pi, 
> very rare).

> Getting it integrated into the CI requires a bit of manual work. You 
> have to solder UART lines to the test points on the motherboard. The 
> board can be fully controlled via so called Embedded Controller, what in 
> practice means that you can turn power on/off by sending commands to the 
> dedicated EC UART. The kernel console UART uses 1.8V, while the EC UART 
> - 3.3V. Let me know if you need more details.

Ah, oh dear - I'm afraid my soldering ability isn't up to that sort of
modification.

> Peach-Pi was used on kernelci.org some time ago, but I have no idea what 
> has happened to it.

I suspect it might've fallen off the end of the ChromeOS support window 
and got pulled, I'll see if I can find out.  Perhaps there's some
modified boards kicking about that didn't get thrown out.

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