linux-kernel - [PATCH v2 5/8] dt-bindings: display: add data-enable polarity property

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Message-Id: <20180912183222.25414-6-stefan@agner.ch>
Date:   Wed, 12 Sep 2018 11:32:19 -0700
From:   Stefan Agner <stefan@...er.ch>
To:     linus.walleij@...aro.org, Laurent.pinchart@...asonboard.com,
        airlied@...ux.ie, robh+dt@...nel.org, mark.rutland@....com,
        shawnguo@...nel.org, s.hauer@...gutronix.de, p.zabel@...gutronix.de
Cc:     kernel@...gutronix.de, fabio.estevam@....com, linux-imx@....com,
        architt@...eaurora.org, a.hajda@...sung.com, gustavo@...ovan.org,
        maarten.lankhorst@...ux.intel.com, sean@...rly.run,
        marcel.ziswiler@...adex.com, max.krummenacher@...adex.com,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Stefan Agner <stefan@...er.ch>
Subject: [PATCH v2 5/8] dt-bindings: display: add data-enable polarity property

Allow to specify the data-enable polarity required by a dumb VGA
DAC converting parallel RGB to VGA.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 .../devicetree/bindings/display/bridge/dumb-vga-dac.txt         | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/dumb-vga-dac.txt b/Documentation/devicetree/bindings/display/bridge/dumb-vga-dac.txt
index 164cbb15f04c..727111ade203 100644
--- a/Documentation/devicetree/bindings/display/bridge/dumb-vga-dac.txt
+++ b/Documentation/devicetree/bindings/display/bridge/dumb-vga-dac.txt
@@ -18,6 +18,8 @@ graph bindings specified in Documentation/devicetree/bindings/graph.txt.
 
 Optional properties:
 - vdd-supply: Power supply for DAC
+- de-active: Polarity of the data enable signal. 0 for active low, 1 for
+  active high, unset for system-specific defaults.
 
 Example
 -------
-- 
2.18.0