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authorMaxime Ripard <maxime.ripard@free-electrons.com>2017-12-21 12:02:27 +0100
committerMaxime Ripard <maxime.ripard@free-electrons.com>2018-01-05 10:00:12 +0100
commit2e7e2ebc68979d984c99c29be0e1af390a49b48c (patch)
tree9b6c5fdab0ff7317b02d82d6e45066334c684d92 /Documentation/devicetree/bindings/display
parent2f0d7bb16e54ccaf6a7fac2fcc21e45287d94ec9 (diff)
dt-bindings: panel: lvds: Document power-supply property
The power-supply property is used by a vast majority of panels, including panel-simple. Let's document it as a common property Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Link: https://patchwork.freedesktop.org/patch/msgid/0a6a3abcf1a6b7f0e66a81af8a44c5c0566ce06c.1513854122.git-series.maxime.ripard@free-electrons.com
Diffstat (limited to 'Documentation/devicetree/bindings/display')
-rw-r--r--Documentation/devicetree/bindings/display/panel/panel-common.txt10
-rw-r--r--Documentation/devicetree/bindings/display/panel/panel-lvds.txt1
-rw-r--r--Documentation/devicetree/bindings/display/panel/simple-panel.txt2
3 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.txt b/Documentation/devicetree/bindings/display/panel/panel-common.txt
index ec52c472c845..557fa765adcb 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-common.txt
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.txt
@@ -78,6 +78,16 @@ used for panels that implement compatible control signals.
while active. Active high reset signals can be supported by inverting the
GPIO specifier polarity flag.
+Power
+-----
+
+- power-supply: display panels require power to be supplied. While several
+ panels need more than one power supply with panel-specific constraints
+ governing the order and timings of the power supplies, in many cases a single
+ power supply is sufficient, either because the panel has a single power rail,
+ or because all its power rails can be driven by the same supply. In that case
+ the power-supply property specifies the supply powering the panel as a phandle
+ to a regulator.
Backlight
---------
diff --git a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
index b938269f841e..250850a2150b 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
+++ b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
@@ -32,6 +32,7 @@ Optional properties:
- label: See panel-common.txt.
- gpios: See panel-common.txt.
- backlight: See panel-common.txt.
+- power-supply: See panel-common.txt.
- data-mirror: If set, reverse the bit order described in the data mappings
below on all data lanes, transmitting bits for slots 6 to 0 instead of
0 to 6.
diff --git a/Documentation/devicetree/bindings/display/panel/simple-panel.txt b/Documentation/devicetree/bindings/display/panel/simple-panel.txt
index 1341bbf4aa3d..16d8ff088b7d 100644
--- a/Documentation/devicetree/bindings/display/panel/simple-panel.txt
+++ b/Documentation/devicetree/bindings/display/panel/simple-panel.txt
@@ -1,7 +1,7 @@
Simple display panel
Required properties:
-- power-supply: regulator to provide the supply voltage
+- power-supply: See panel-common.txt
Optional properties:
- ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing