ENGR00298052-4 ARM: dts: imx6qdl-sabreauto: support Hannstar CABC

This patch adds a device tree node for the Hannstar CABC function.
The LVDS0 and LVDS1 interfaces of the i.MX6dql Sabreauto platform
shares a control pin for the CABC function, but LVDS1's control
wire is invalid for the unpopulated resistor R265 on the main board.
We currently disable the CABC feature since it makes a panel's
backlight unstable when display content varies considerably from
time to time.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
(cherry picked from commit 6af4f4ac7c361a60fe05400497f644db3adcfc94)

diff --git a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
index 9e9e8b78d32b50d8a5c2b822964fb36471f3d94c..95513cd10d4e9475de0482ed6516ea093d0668aa 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
@@ -75,6 +75,14 @@
                };
        };
 
+       hannstar_cabc {
+               compatible = "hannstar,cabc";
+
+               lvds_share {
+                       gpios = <&max7310_a 0 GPIO_ACTIVE_HIGH>;
+               };
+       };
+
        max7310_reset: max7310-reset {
                compatible = "gpio-reset";
                reset-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;