From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] soc: mediatek: Add SMI driver
Date: Tue, 10 Mar 2015 10:05:59 +0100 [thread overview]
Message-ID: <2220384.lLJEdfpchj@wuerfel> (raw)
In-Reply-To: <1425968824.4871.146.camel@mtksdaap41>
On Tuesday 10 March 2015 14:27:04 Yingjoe Chen wrote:
> On Mon, 2015-03-09 at 22:56 +0100, Arnd Bergmann wrote:
> > On Monday 09 March 2015 11:26:52 Yingjoe Chen wrote:
> > > On Fri, 2015-03-06 at 18:48 +0800, yong.wu at mediatek.com wrote:
> > > > From: Yong Wu <yong.wu@mediatek.com>
> > > >
> > > > This patch add SMI(Smart Multimedia Interface) driver. This driver is
> > > > responsible to enable/disable iommu and control the clocks of each
> > > > local arbiter.
> > > >
> > > > Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> > > > ---
> > > > drivers/soc/mediatek/Kconfig | 7 ++
> > > > drivers/soc/mediatek/Makefile | 1 +
> > > > drivers/soc/mediatek/mt8173-smi.c | 143 ++++++++++++++++++++++++++++++++++++++
> > > > include/linux/mtk-smi.h | 40 +++++++++++
> > > > 4 files changed, 191 insertions(+)
> > > > create mode 100644 drivers/soc/mediatek/mt8173-smi.c
> > > > create mode 100644 include/linux/mtk-smi.h
> > > >
> > >
> > > Hi Arnd, Matthias,
> > >
> > > For the SMI driver, we can't find a better place, so we put it in
> > > drivers/soc/mediatek now. Please let us know if you have any suggestion
> > > or concern. Thanks
> >
> > From what I understand from your description, I think it would better
> > fit in drivers/iommu. Another option is drivers/memory, which I think
> > is where the respective Tegra driver ended up.
>
> Hi Arnd,
>
> The description above only describe what is implemented now. Besides
> that, SMI HW also does:
>
> - Prioritize/arbitrate memory requests between different ports & larbs.
> - Bandwidth limiter
> - Performance monitor
>
> I think drivers/memory make more sense. I can't find info about
> drivers/memory in MAINTAINERS. Can this go through ARM SoC tree if we
> put SMI driver there?
>
Yes, that works for me. I'd like to see a review from Thierry Reding
though, since he wrote the Tegra driver that is used for very similar
hardware, and I want to make sure you two are on the same page with
the internal APIs.
Arnd
next prev parent reply other threads:[~2015-03-10 9:05 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 10:48 [RFC PATCH 0/5] MT8173 IOMMU support yong.wu at mediatek.com
2015-03-06 10:48 ` [PATCH 1/5] soc: mediatek: Add SMI driver yong.wu at mediatek.com
2015-03-06 11:30 ` Paul Bolle
2015-03-09 11:57 ` Yong Wu
2015-03-09 17:59 ` Paul Bolle
2015-03-09 21:54 ` Arnd Bergmann
2015-03-10 6:17 ` Yingjoe Chen
2015-03-09 3:26 ` Yingjoe Chen
2015-03-09 21:56 ` Arnd Bergmann
2015-03-10 6:27 ` Yingjoe Chen
2015-03-10 9:05 ` Arnd Bergmann [this message]
2015-03-10 9:24 ` Lucas Stach
2015-03-09 11:03 ` Sascha Hauer
2015-03-06 10:48 ` [PATCH 2/5] iommu/mediatek: Add mt8173 IOMMU driver yong.wu at mediatek.com
2015-03-06 10:58 ` Will Deacon
2015-03-09 12:11 ` Yong Wu
2015-03-17 15:14 ` Will Deacon
2015-03-06 17:15 ` Mitchel Humpherys
2015-03-09 12:16 ` Yong Wu
2015-03-09 16:57 ` Mitchel Humpherys
2015-03-08 4:12 ` Tomasz Figa
2015-03-12 14:16 ` Yong Wu
2015-03-09 8:24 ` Daniel Kurtz
2015-03-09 11:11 ` Tomasz Figa
2015-03-09 14:46 ` Yingjoe Chen
2015-03-09 17:00 ` Tomasz Figa
2015-03-10 3:41 ` Yingjoe Chen
2015-03-10 4:06 ` Tomasz Figa
2015-03-11 10:53 ` Tomasz Figa
2015-03-18 11:22 ` Yong Wu
2015-03-20 19:14 ` Robin Murphy
2015-04-14 6:50 ` Yong Wu
2015-03-27 9:41 ` Tomasz Figa
2015-04-14 6:31 ` Yong Wu
2015-04-15 2:20 ` Tomasz Figa
2015-04-15 7:06 ` Yong Wu
2015-04-15 7:41 ` Tomasz Figa
2015-04-29 6:23 ` Yong Wu
2015-03-06 10:48 ` [PATCH 3/5] dt-bindings: mediatek: Add smi dts binding yong.wu at mediatek.com
2015-03-06 11:13 ` Mark Rutland
2015-03-09 12:55 ` Yong Wu
2015-04-14 9:07 ` Yong Wu
2015-04-14 10:06 ` Mark Rutland
2015-04-14 13:49 ` Yong Wu
2015-04-14 13:55 ` Yong Wu
2015-04-14 13:56 ` Mark Rutland
2015-03-06 14:48 ` Sergei Shtylyov
2015-03-09 12:32 ` Yong Wu
2015-03-06 10:48 ` [PATCH 4/5] dt-bindings: iommu: Add binding for mediatek IOMMU yong.wu at mediatek.com
2015-03-06 11:21 ` Mark Rutland
2015-03-09 11:30 ` Yong Wu
2015-03-06 10:48 ` [PATCH 5/5] dts: mt8173: Add iommu/smi nodes for mt8173 yong.wu at mediatek.com
2015-03-07 15:20 ` Daniel Kurtz
2015-03-09 12:18 ` Yong Wu
-- strict thread matches above, loose matches on Subject: below --
2015-03-06 10:37 [RFC PATCH 0/5] MT8173 IOMMU support yong.wu at mediatek.com
2015-03-06 10:37 ` [PATCH 1/5] soc: mediatek: Add SMI driver yong.wu at mediatek.com
2015-03-09 7:51 ` Daniel Kurtz
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