From: Sander Speetjens <sander.speetjens@gmail.com>
To: Stefan Wahren <wahrenst@gmx.net>, Krzysztof Kozlowski <krzk@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Jonathan Bell <jonathan@raspberrypi.com>,
linux-rtc@vger.kernel.org, devicetree@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 1/2] dt-bindings: rtc: Add property for Raspberry Pi 5 RTC
Date: Fri, 18 Sep 2026 21:33:10 +0200 [thread overview]
Message-ID: <74d59f1e-479a-495e-8413-51e1feca78f5@gmail.com> (raw)
In-Reply-To: <f5c04c5a-20c3-4f4c-bd1f-045516d24140@gmx.net>
> On 9/18/26 15:27, Stefan Wahren wrote:
>> Am 18.09.26 um 13:44 schrieb Krzysztof Kozlowski:
>>> On Thu, Sep 17, 2026 at 03:58:40PM +0200, Sander Speetjens wrote:
>>>> Add trickle-voltage-millivolt property for the Raspberry Pi 5 RTC.
>>> Why? Describe the hardware, the need, not the diff.
>> Is this something we can avoid by making this configurable via
>> userspace / hw_clock --param-set=parameter=value ?
I think it would be handy to have both.
A cm5 board designer could choose to have a super-cap or lithium ion cell
and for that a device-tree property would be handy for it is always the
same.
But for a user attachable battery on the pi 5b via headers or soldering
the userspace version would be easier.
next prev parent reply other threads:[~2026-09-18 19:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-17 13:58 [PATCH v3 0/2] Raspberry Pi 5 RTC driver Sander Speetjens
2026-09-17 13:58 ` [PATCH v3 1/2] dt-bindings: rtc: Add property for Raspberry Pi 5 RTC Sander Speetjens
2026-09-17 14:07 ` sashiko-bot
2026-09-18 11:44 ` Krzysztof Kozlowski
2026-09-18 13:27 ` Stefan Wahren
2026-09-18 19:33 ` Sander Speetjens [this message]
2026-09-21 18:51 ` Alexandre Belloni
2026-09-17 13:58 ` [PATCH v3 2/2] rtc: Add Raspberry Pi 5 RTC driver Sander Speetjens
2026-09-17 14:11 ` sashiko-bot
2026-09-18 11:47 ` Krzysztof Kozlowski
2026-09-21 18:59 ` Alexandre Belloni
2026-09-21 19:36 ` Sander Speetjens
2026-09-21 21:23 ` Alexandre Belloni
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=74d59f1e-479a-495e-8413-51e1feca78f5@gmail.com \
--to=sander.speetjens@gmail.com \
--cc=alexandre.belloni@bootlin.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=florian.fainelli@broadcom.com \
--cc=jonathan@raspberrypi.com \
--cc=krzk+dt@kernel.org \
--cc=krzk@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-rpi-kernel@lists.infradead.org \
--cc=linux-rtc@vger.kernel.org \
--cc=robh@kernel.org \
--cc=wahrenst@gmx.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox