linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: tom burkart <tom@aussec.com>
To: Rob Herring <robh@kernel.org>
Cc: Linux kernel mailing list <linux-kernel@vger.kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [PATCH v7 1/4] dt-bindings: pps: descriptor-based gpio, capture-clear addition
Date: Sat, 17 Nov 2018 21:35:22 +1100	[thread overview]
Message-ID: <20181117213522.12672utznrvpbn56@www.aussec.com> (raw)
In-Reply-To: <20181116224919.GA18008@bogus>

Quoting Rob Herring <robh@kernel.org>:

> On Wed, Nov 14, 2018 at 11:54:29PM +1100, Tom Burkart wrote:
>> This patch changes the devicetree bindings for the pps-gpio driver
>> from the integer based ABI to the descriptor based ABI.
> ? That has nothing to do with DT.

I believe it does, as the change in ABI forces a rename in the DT  
naming convention.
This is due to the descriptor based ABI appending "-gpio" or "-gpios" (see
Documentation/gpio/base.txt.)
Admittedly, I may have called it by the wrong name due to ignorance,  
my apologies.

>>  It also adds
>> documentation for the device tree capture-clear option.  The legacy
>> device tree entry for the GPIO pin is supported.
>>
>> Signed-off-by: Tom Burkart <tom@aussec.com>
>> ---
>>  Documentation/devicetree/bindings/pps/pps-gpio.txt | 8 ++++++--
>>  1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pps/pps-gpio.txt  
>> b/Documentation/devicetree/bindings/pps/pps-gpio.txt
>> index 3683874832ae..6c9fc0998d94 100644
>> --- a/Documentation/devicetree/bindings/pps/pps-gpio.txt
>> +++ b/Documentation/devicetree/bindings/pps/pps-gpio.txt
>> @@ -5,19 +5,23 @@ a GPIO pin.
>>
>>  Required properties:
>>  - compatible: should be "pps-gpio"
>> -- gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
>> +- pps-gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
>> +Alternatively (DEPRECATED), instead of pps-gpios above, it may have:
>> +- gpios: one PPS GPIO as above
>>
>>  Optional properties:
>>  - assert-falling-edge: when present, assert is indicated by a falling edge
>>                         (instead of by a rising edge)
>> +- capture-clear: when present, also capture the PPS clear event
>
> Is this a h/w thing? or driver configuration?

Driver configuration.  Most of the code was present in the driver, yet  
it was not documented, or usable due to a two line (code) omission  
(the value was not being fetched from DT).

>>
>>  Example:
>>  	pps {
>>  		pinctrl-names = "default";
>>  		pinctrl-0 = <&pinctrl_pps>;
>>
>> -		gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
>> +		pps-gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
>>  		assert-falling-edge;
>> +		capture-clear;
>>
>>  		compatible = "pps-gpio";
>>  	};
>> --
>> 2.12.3
>>
>
>



  reply	other threads:[~2018-11-17 10:35 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-14 12:54 [PATCH v7 0/4] PPS: pps-gpio PPS ECHO implementation Tom Burkart
2018-11-14 12:54 ` [PATCH v7 1/4] dt-bindings: pps: descriptor-based gpio, capture-clear addition Tom Burkart
2018-11-14 12:54   ` [PATCH v7 2/4] " Tom Burkart
2018-11-14 12:54     ` [PATCH 3/4] dt-bindings: pps: pps-gpio PPS ECHO implementation Tom Burkart
2018-11-14 12:54       ` [PATCH v7 4/4] pps: pps-gpio pps-echo implementation Tom Burkart
2018-11-16 22:49   ` [PATCH v7 1/4] dt-bindings: pps: descriptor-based gpio, capture-clear addition Rob Herring
2018-11-17 10:35     ` tom burkart [this message]
2018-11-17 14:22       ` Rob Herring
2018-11-18  0:35         ` tom burkart
2018-11-26 19:39           ` Rob Herring
2018-11-27  3:57             ` tom burkart
2018-11-28 17:13               ` Rob Herring
2018-11-29  0:29                 ` tom burkart
2018-11-29  2:05                 ` tom burkart
2018-11-29 18:00                   ` Rob Herring
2018-12-01 22:24                     ` tom burkart

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181117213522.12672utznrvpbn56@www.aussec.com \
    --to=tom@aussec.com \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robh@kernel.org \
    --subject='Re: [PATCH v7 1/4] dt-bindings: pps: descriptor-based gpio, capture-clear addition' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).