linux-kernel - Re: [PATCH] i2c: tegra: dynamically control fast clk

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Date:	Fri, 17 Aug 2012 13:07:50 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
CC:	"khali@...ux-fr.org" <khali@...ux-fr.org>,
	"ben-linux@...ff.org" <ben-linux@...ff.org>,
	"w.sang@...gutronix.de" <w.sang@...gutronix.de>,
	Stephen Warren <swarren@...dia.com>,
	"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH] i2c: tegra: dynamically control fast clk

On 08/17/2012 12:45 PM, Laxman Dewangan wrote:
> On Saturday 18 August 2012 12:11 AM, Stephen Warren wrote:
>> On 08/17/2012 01:48 AM, Laxman Dewangan wrote:
>>> Tegra I2C driver enables the fast clock during initialization
>>> and does not disable till driver removed.
>>> Enable this clock before transfer and disable after transfer done.
>>>
>>> Signed-off-by: Laxman Dewangan<ldewangan@...dia.com>
>>> ---
>>> This patch is on top of the clock chnages which is in Tegra sub
>>> system and
>>> based on
>>>   i2c: tegra: I2_M_NOSTART functionality not supported in Tegra20
>>> So recommend to go on tegra sub-system.
>> What exactly is this patch based on? I checked out Tegra's
>> for-3.7/drivers-i2c, cherry-picked the M_NOSTART patch you mentioned,
>> and attempted to apply this patch. It doesn't apply. Same if I don't
>> cherry-pick the M_NOSTART patch, and same for next-20120816 with/without
>> the M_NOSTART patch.
> 
> Then It seems I need to create the patch again and send it.  The
> M_NOSTART patch was on tot before clock related change and that is the
> reason it is not applying.
> Should I re-send these two patches together as 1/2 and 2/2 to maintain
> sequence?
> I can create based on your clock tree.

For any I2C-related changes I take through the Tegra tree, basing them
on top of for-3.7/drivers-i2c would be best. Feel free to send both
patches together again if that's easiest.
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