linux-kernel - [PATCH 1/2] devicetree: mxsfb: add reset-active property

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Message-Id: <1450200297-19243-1-git-send-email-mans@mansr.com>
Date:	Tue, 15 Dec 2015 17:24:56 +0000
From:	Mans Rullgard <mans@...sr.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	marex@...x.de
Subject: [PATCH 1/2] devicetree: mxsfb: add reset-active property

Some boards connect the LCD_RESET pin to a reset input on the
display panel.  On these boards, this pin must be set to the
proper level for the display to function.

This adds an optional "reset-active" property to the "display"
subnode such that devicetrees can specify the desired polarity
of the LCD_RESET pin.

Signed-off-by: Mans Rullgard <mans@...sr.com>
---
 Documentation/devicetree/bindings/display/mxsfb.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mxsfb.txt b/Documentation/devicetree/bindings/display/mxsfb.txt
index 96ec517..cb7212a 100644
--- a/Documentation/devicetree/bindings/display/mxsfb.txt
+++ b/Documentation/devicetree/bindings/display/mxsfb.txt
@@ -13,6 +13,11 @@ Required properties:
 - bits-per-pixel : <16> for RGB565, <32> for RGB888/666.
 - bus-width : number of data lines.  Could be <8>, <16>, <18> or <24>.
 
+Optional properties:
+- reset-active : <0>: reset pin is active low
+                 <1>: reset pin is active high
+                 omitted: reset pin not used
+
 Required sub-node:
 - display-timings : Refer to binding doc display-timing.txt for details.
 
-- 
2.6.3

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