From: Flora Fu <flora.fu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Matthias Brugger
<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Samuel Ortiz <sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
HenryC Chen <henryc.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Menghui Lin <menghui.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
Sascha Hauer <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Grant Likely
<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Yingjoe Chen
<yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Eddie Huang <eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Dongdong Cheng
<dongdong.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH v3 1/8] soc: mediatek: Add PMIC wrapper for MT8135 and MT6397 SoC
Date: Tue, 9 Dec 2014 10:15:37 +0800 [thread overview]
Message-ID: <1418091337.5663.9.camel@mtksdaap41> (raw)
In-Reply-To: <2751641.o51TuZRl88@wuerfel>
Hi, Arnd,
On Fri, 2014-12-05 at 11:13 +0100, Arnd Bergmann wrote:
> On Friday 05 December 2014 12:07:52 Flora Fu wrote:
> > Add PMIC wrapper of MT8135 to access MT6397 MFD.
> >
> > Signed-off-by: Flora Fu <flora.fu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> >
>
> Please explain what a PMIC wrapper is and why you need one for MT8135.
> I don't understand the purpose of this code at all. Is this just another
> way of accessing the MT6397 when not using i2c or spi like other
> PMIC drivers do?
>
Yes, MT8135 uses a proprietary hardware to communicate with MT6397.
The hardware is called PMIC Wrapper or PWRAP.
Since it is not standard i2c or spi protocols, a soc related software
driver is implemented to handle access protocols in AP side.
+-----------------+ +---------------+
| | | |
| Mediatek AP SoC | | |
| (ex. MT8135) | | MT6397 |
| | | |
| +--------+ | (SPI bus) | +--------+ |
| | | |-----------| | | |
| | PMIC | |-----------| | PMIC | |
| | Wrapper| |-----------| | Wrapper| |
| | | |-----------| | | |
| +--------+ | | +--------+ |
| | | |
+-----------------+ +---------------+
Thanks,
Flora
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2014-12-09 2:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-05 4:07 [PATCH v3 0/8] Add Support for MediaTek PMIC MT6397 MFD Core and Regulator Flora Fu
2014-12-05 4:07 ` [PATCH v3 1/8] soc: mediatek: Add PMIC wrapper for MT8135 and MT6397 SoC Flora Fu
[not found] ` <1417752479-4749-2-git-send-email-flora.fu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2014-12-05 10:13 ` Arnd Bergmann
2014-12-09 2:15 ` Flora Fu [this message]
2014-12-09 8:23 ` Arnd Bergmann
2014-12-09 10:13 ` Sascha Hauer
[not found] ` <20141209101341.GV30369-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2014-12-09 10:30 ` Matthias Brugger
[not found] ` <CABuKBe+whgVryssULCu2MAXRu3u+pYwM2nN3ToTEGpEvniQ6Jw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-09 11:20 ` Arnd Bergmann
2014-12-11 10:04 ` Flora Fu
2014-12-14 20:18 ` Arnd Bergmann
2014-12-15 17:22 ` Mark Brown
[not found] ` <1417752479-4749-1-git-send-email-flora.fu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2014-12-05 4:07 ` [PATCH v3 2/8] mfd: MT6397: Add support for PMIC MT6397 MFD Flora Fu
[not found] ` <1417752479-4749-3-git-send-email-flora.fu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2014-12-08 8:46 ` Lee Jones
2014-12-05 4:07 ` [PATCH v3 3/8] regulator: MT6397: Add support for MT6397 regulator Flora Fu
2014-12-24 12:41 ` Mark Brown
2014-12-05 4:07 ` [PATCH v3 4/8] dt-bindings:: Add document for MT8135 PMIC Wrapper Flora Fu
2014-12-05 4:07 ` [PATCH v3 5/8] dt-bindings: Add document for MT6397 MFD Flora Fu
2014-12-05 4:07 ` [PATCH v3 6/8] dt-bindings: Add document for MT6397 regulator Flora Fu
2014-12-24 12:41 ` Mark Brown
2014-12-05 4:07 ` [PATCH v3 7/8] ARM: dts: mt8135: Add support for MT8135 PMIC wrapper Flora Fu
2014-12-05 4:07 ` [PATCH v3 8/8] ARM: dts: mt8135: Add support for MT6397 MFD and regulator Flora Fu
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=1418091337.5663.9.camel@mtksdaap41 \
--to=flora.fu-nus5lvnupcjwk0htik3j/w@public.gmane.org \
--cc=arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=arnd-r2nGTMty4D4@public.gmane.org \
--cc=broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=dongdong.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
--cc=eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
--cc=galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org \
--cc=grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=henryc.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
--cc=ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org \
--cc=kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org \
--cc=lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org \
--cc=mark.rutland-5wv7dgnIgG8@public.gmane.org \
--cc=matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=menghui.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
--cc=olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org \
--cc=pawel.moll-5wv7dgnIgG8@public.gmane.org \
--cc=robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
--cc=srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
--cc=yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org \
/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;
as well as URLs for NNTP newsgroup(s).