linux-kernel - Re: [PATCH 2/4] counter: new TI eQEP driver

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Message-ID: <58ef00df-4d99-f4f2-0eda-01db2afe5502@lechnology.com>
Date:   Tue, 30 Jul 2019 10:28:10 -0500
From:   David Lechner <david@...hnology.com>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc:     linux-iio@...r.kernel.org, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org
Subject: Re: [PATCH 2/4] counter: new TI eQEP driver

On 7/30/19 7:35 AM, Uwe Kleine-König wrote:
> On Mon, Jul 22, 2019 at 10:45:36AM -0500, David Lechner wrote:
>> This adds a new counter driver for the Texas Instruments Enhanced
>> Quadrature Encoder Pulse (eQEP) module.
>>
>> Only very basic functionality is currently implemented - only enough to
>> be able to read the position. The actual device has many more features
>> which can be added to the driver on an as-needed basis.
>>
>> Signed-off-by: David Lechner <david@...hnology.com>
>> ---
>>   MAINTAINERS               |   6 +
>>   drivers/counter/Kconfig   |  12 ++
>>   drivers/counter/Makefile  |   1 +
>>   drivers/counter/ti-eqep.c | 381 ++++++++++++++++++++++++++++++++++++++
>>   drivers/pwm/Kconfig       |   2 +-
> 
> It's not obvious why the change to drivers/pwm/Kconfig is needed. Can
> you please motivate that in the change log?

Will do. The short version is that it is needed for power management.

> 
> Best regards
> Uwe
>