linux-kernel - Re: [PATCH] gpio: pca953x: Add optional reset gpio control

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Date:   Tue, 10 Jan 2017 11:21:00 -0800
From:   Steve Longerbeam <slongerbeam@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     linus.walleij@...aro.org, gnurou@...il.com, mark.rutland@....com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: Re: [PATCH] gpio: pca953x: Add optional reset gpio control



On 01/04/2017 05:22 AM, Rob Herring wrote:
> On Mon, Jan 02, 2017 at 01:07:51PM -0800, Steve Longerbeam wrote:
>> Add optional reset-gpios pin control. If present, de-assert the
>> specified reset gpio pin to bring the chip out of reset.
>>
>> Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
>> Cc: Linus Walleij <linus.walleij@...aro.org>
>> Cc: Alexandre Courbot <gnurou@...il.com>
>> Cc: linux-gpio@...r.kernel.org
>> Cc: linux-kernel@...r.kernel.org
>> ---
>>   Documentation/devicetree/bindings/gpio/gpio-pca953x.txt |  4 ++++
>>   drivers/gpio/gpio-pca953x.c                             | 11 +++++++++++
>>   2 files changed, 15 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
>> index 08dd15f..da54f4c 100644
>> --- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
>> +++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
>> @@ -29,6 +29,10 @@ Required properties:
>>   	onsemi,pca9654
>>   	exar,xra1202
>>   
>> +Optional properties:
>> + - reset-gpios: GPIO specification for the RESET input
> Need to specify active high or low.

done (it's an active low signal).

Steve