drm/panel: Add driver for Seiko 43WVF1G panel

Add driver for Seiko Instruments Inc. 4.3" WVGA (800 x RGB x 480)
TFT with Touch-Panel.

Datasheet available at:
http://www.glyn.de/data/glyn/media/doc/43wvf1g-0.pdf

Seiko 43WVF1G panel has two power supplies: avdd and dvdd and they
require a specific power on/down sequence.
For this reason the simple panel driver cannot be used to drive this
panel, so create a new one heavily based on simple panel.

Based on initial patch submission from Breno Lima.

Signed-off-by: Marco Franchi <marco.franchi@nxp.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1500567179-6967-1-git-send-email-marco.franchi@nxp.com

1 files changed, 23 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/display/panel/seiko,43wvf1g.txt b/Documentation/devicetree/bindings/display/panel/seiko,43wvf1g.txt
new file mode 100644
index 000000000000..aae57ef36cdd
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/seiko,43wvf1g.txt
@@ -0,0 +1,23 @@
+Seiko Instruments Inc. 4.3" WVGA (800 x RGB x 480) TFT with Touch-Panel
+
+Required properties:
+- compatible: should be "sii,43wvf1g".
+- "dvdd-supply": 3v3 digital regulator.
+- "avdd-supply": 5v analog regulator.
+
+Optional properties:
+- backlight: phandle for the backlight control.
+
+Example:
+
+	panel {
+		compatible = "sii,43wvf1g";
+		backlight = <&backlight_display>;
+		dvdd-supply = <&reg_lcd_3v3>;
+		avdd-supply = <&reg_lcd_5v>;
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&display_out>;
+			};
+		};
+	};