Re: [PATCH v6 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se_cache save

From: Vignesh R <vigneshr@ti.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Jonathan Cameron <jic23@kernel.org>,
	Hartmut Knaack <knaack.h@gmx.de>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Kumar Gala <galak@codeaurora.org>,
	Benoit Cousson <bcousson@baylibre.com>,
	Tony Lindgren <tony@atomide.com>,
	Russell King <linux@arm.linux.org.uk>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald <pmeerw@pmeerw.net>,
	Samuel Ortiz <sameo@linux.intel.com>,
	Brad Griffis <bgriffis@ti.com>,
	Paul Gortmaker <paul.gortmaker@windriver.com>,
	Sanjeev Sharma <sanjeev_sharma@mentor.com>,
	Jan Kardell <jan.kardell@telliq.com>, Felipe Balbi <balbi@ti.com>,
	Wolfram Sang <wsa@the-dreams.de>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-iio@vger.kernel.org>, <linux-input@vger.kernel.org>
Subject: Re: [PATCH v6 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se_cache save
Date: Wed, 25 Feb 2015 09:37:25 +0530	[thread overview]
Message-ID: <54ED4A7D.4060609@ti.com> (raw)
In-Reply-To: <54D30BE5.4070906@ti.com>

Hi,

On Thursday 05 February 2015 11:51 AM, Vignesh R wrote:
> 
> 
> On Wednesday 21 January 2015 03:44 PM, Vignesh R wrote:
>> On Tuesday 20 January 2015 09:34 PM, Lee Jones wrote:
>>> On Tue, 20 Jan 2015, R, Vignesh wrote:
>>>> On 1/20/2015 5:23 PM, Lee Jones wrote:
>>>>> On Wed, 07 Jan 2015, Vignesh R wrote:
>>>>>
>>>>>> In one shot mode, sequencer automatically disables all enabled steps at
>>>>>> the end of each cycle. (both ADC steps and TSC steps) Hence these steps
>>>>>> need not be saved in reg_se_cache for clearing these steps at a later
>>>>>> stage.
>>>>>> Also, when ADC wakes up Sequencer should not be busy executing any of the
>>>>>> config steps except for the charge step. Previously charge step was 1 ADC
>>>>>> clock cycle and hence it was ignored.
>>>>>> TSC steps are always disabled at the end of each conversion cycle, hence
>>>>>> there is no need to explicitly disable TSC steps by writing 0 to REG_SE.
>>>>>>
>>>>>> Signed-off-by: Vignesh R <vigneshr@ti.com>
>>>>>> ---
>>>>>>
>>>>>> v5:
>>>>>>  - Remove unnecessary clearing of REG_SE
>>>>>>
>>>>>>  drivers/mfd/ti_am335x_tscadc.c       | 13 +++++--------
>>>>>>  include/linux/mfd/ti_am335x_tscadc.h |  1 +
>>>>>>  2 files changed, 6 insertions(+), 8 deletions(-)
>>>>>
>>>>> Looks fine.
>>>>>
>>>>> For my own reference:
>>>>>   Acked-by: Lee Jones <lee.jones@linaro.org>
>>>>>
>>>>> Can this patch be applied on its own?
>>>>>
>>>>
>>>> I prefer to wait until input patches are picked up.
>>>
>>> I have no problem with that, but is there a technical reason why?
>>>
>>
>> Nothing, in particular. This patch alone has no impact on the
>> performance of TSC/ADC unit. Patch 2/6 is necessary to observe the
>> changes caused by this series. Hence, please wait until those patches
>> are picked up.
> 
> Input maintainer has applied other patches. You can pick this one.

Gentle ping... Can you pull this patch into 4.0-rc? Other patches of
this series are already in mainline.

Regards
Vignesh