From: Wolfram Sang <wsa@the-dreams.de>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 0/5] ARM: shmobile: r8a7790: enable IIC(B) cores
Date: Tue, 25 Mar 2014 16:31:38 +0000 [thread overview]
Message-ID: <20140325163137.GD6374@katana> (raw)
In-Reply-To: <2570845.PngjMN9sWk@avalon>
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> > This series allows r8a7790 boards to use the alternative IIC(B) controller
> > handled by the i2c-sh_mobile driver. Since both i2c cores always use the
> > same pins only in a different function group, you can easily use this or
> > that core for your devices. For that reason, there is currently no
> > enablement on the Lager board, since it needs discussion which core we want
> > to have on which bus. sh_mobile seems more stable currently, so I'd vote
> > for that.
>
> Do you have a short list of pros and cons from a hardware point of view ?
iic has DMA capability for which we don't have software support yet.
Other than that, I guess it is just details and I haven't looked that deep
into the datasheets yet. That might be coming after this DT enablement.
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From: wsa@the-dreams.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/5] ARM: shmobile: r8a7790: enable IIC(B) cores
Date: Tue, 25 Mar 2014 17:31:38 +0100 [thread overview]
Message-ID: <20140325163137.GD6374@katana> (raw)
In-Reply-To: <2570845.PngjMN9sWk@avalon>
> > This series allows r8a7790 boards to use the alternative IIC(B) controller
> > handled by the i2c-sh_mobile driver. Since both i2c cores always use the
> > same pins only in a different function group, you can easily use this or
> > that core for your devices. For that reason, there is currently no
> > enablement on the Lager board, since it needs discussion which core we want
> > to have on which bus. sh_mobile seems more stable currently, so I'd vote
> > for that.
>
> Do you have a short list of pros and cons from a hardware point of view ?
iic has DMA capability for which we don't have software support yet.
Other than that, I guess it is just details and I haven't looked that deep
into the datasheets yet. That might be coming after this DT enablement.
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next prev parent reply other threads:[~2014-03-25 16:31 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-11 21:24 [PATCH 0/5] ARM: shmobile: r8a7790: enable IIC(B) cores Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-11 21:24 ` [PATCH 1/5] pinctrl: pfc: r8a7790: add i2c0 muxing Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-12 10:23 ` Laurent Pinchart
2014-03-12 10:23 ` Laurent Pinchart
2014-03-11 21:24 ` [PATCH 2/5] pinctrl: pfc: r8a7790: add mux data for IIC(B) cores Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-12 10:31 ` Laurent Pinchart
2014-03-12 10:31 ` Laurent Pinchart
2014-03-11 21:24 ` [PATCH 3/5] ARM: shmobile: r8a7790: add IIC0-2 clock macros Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-12 10:32 ` Laurent Pinchart
2014-03-12 10:32 ` Laurent Pinchart
2014-03-11 21:24 ` [PATCH 4/5] ARM: shmobile: r8a7790: add IIC(B) clocks to dtsi Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-12 10:37 ` Laurent Pinchart
2014-03-12 10:37 ` Laurent Pinchart
2014-03-12 11:05 ` Magnus Damm
2014-03-12 11:05 ` Magnus Damm
2014-03-25 16:48 ` Wolfram Sang
2014-03-25 16:48 ` Wolfram Sang
2014-03-11 21:24 ` [PATCH 5/5] ARM: shmobile: r8a7790: add IIC(B) cores " Wolfram Sang
2014-03-11 21:24 ` Wolfram Sang
2014-03-12 10:39 ` Laurent Pinchart
2014-03-12 10:39 ` Laurent Pinchart
2014-03-12 10:40 ` [PATCH 0/5] ARM: shmobile: r8a7790: enable IIC(B) cores Laurent Pinchart
2014-03-12 10:40 ` Laurent Pinchart
2014-03-25 16:31 ` Wolfram Sang [this message]
2014-03-25 16:31 ` Wolfram Sang
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