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From: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	patches-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org,
	frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org
Subject: [PATCH v2 1/5] gpio: of: Reflect decoupling of open collector and active low/high
Date: Tue, 23 May 2017 15:47:28 +0100	[thread overview]
Message-ID: <1495550852-3672-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> (raw)

Commit 4c0facddb7d8 ("gpio: core: Decouple open drain/source flag with
active low/high") decoupled the open collector outputs from active
low/high but did not update the documentation.

Update the device tree documentation to correctly reflect this new
separation between the two concepts.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
---

New to the series.

Thanks,
Charles

 Documentation/devicetree/bindings/gpio/gpio.txt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt
index 2209c16..bccb8623 100644
--- a/Documentation/devicetree/bindings/gpio/gpio.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio.txt
@@ -74,11 +74,12 @@ GPIO pin number, and GPIO flags as accepted by the "qe_pio_e" gpio-controller.
 Optional standard bitfield specifiers for the last cell:
 
 - Bit 0: 0 means active high, 1 means active low
-- Bit 1: 1 means single-ended wiring, see:
+- Bit 1: 0 mean push-pull wiring, see:
+           https://en.wikipedia.org/wiki/Push-pull_output
+         1 means single-ended wiring, see:
            https://en.wikipedia.org/wiki/Single-ended_triode
-	   When used with active-low, this means open drain/collector, see:
+- Bit 2: 0 means open-source, 1 means open drain, see:
            https://en.wikipedia.org/wiki/Open_collector
-	   When used with active-high, this means open source/emitter
 
 1.1) GPIO specifier best practices
 ----------------------------------
-- 
2.1.4

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             reply	other threads:[~2017-05-23 14:47 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-23 14:47 Charles Keepax [this message]
2017-05-23 14:47 ` [PATCH v2 2/5] gpio: Add new flags to control sleep status of GPIOs Charles Keepax
2017-05-29  9:08   ` Linus Walleij
2017-05-23 14:47 ` [PATCH v2 3/5] gpio: arizona: Add support for GPIOs that need to be maintained Charles Keepax
     [not found]   ` <1495550852-3672-3-git-send-email-ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2017-05-29  9:09     ` Linus Walleij
2017-05-23 14:47 ` [PATCH v2 4/5] gpio: of: Add documentation of new sleep standard GPIO specifiers Charles Keepax
2017-05-24  8:42   ` Laxman Dewangan
     [not found]   ` <1495550852-3672-4-git-send-email-ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2017-05-29  9:10     ` Linus Walleij
     [not found] ` <1495550852-3672-1-git-send-email-ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2017-05-23 14:47   ` [PATCH v2 5/5] mfd: arizona: Update GPIO binding for newly supported specifiers Charles Keepax
2017-05-24  8:35     ` Lee Jones
2017-05-29  9:11       ` Linus Walleij
     [not found]     ` <1495550852-3672-5-git-send-email-ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2017-05-30  7:17       ` Lee Jones
2017-05-24  8:40 ` [PATCH v2 1/5] gpio: of: Reflect decoupling of open collector and active low/high Laxman Dewangan
2017-05-29  9:06 ` Linus Walleij

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