ARM: dts: omap4-panda: Fix DVI EDID reads

On Panda the +5V supply for DVI EDID is supplied by the
same regulator that poweres the USB Hub. Currently, the
DSS/DVI subsystem doesn't know how to manage this regulator
and so DVI EDID reads will fail if USB Hub is not enabled.

As a temporary fix we keep this regulator permanently enabled
on boot. This fixes the DVI EDID read problem.

CC: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>

diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi
index 60fc62489b7aeb2b24eea867709738c7e1910515..faa95b5b242ee437aeea84c8d4dde915a67c2031 100644 (file)
--- a/arch/arm/boot/dts/omap4-panda-common.dtsi
+++ b/arch/arm/boot/dts/omap4-panda-common.dtsi
@@ -85,6 +85,13 @@
                gpio = <&gpio1 1 0>;    /* gpio_1 */
                startup-delay-us = <70000>;
                enable-active-high;
+               /*
+                * boot-on is required along with always-on as the
+                * regulator framework doesn't enable the regulator
+                * if boot-on is not there.
+                */
+               regulator-always-on;
+               regulator-boot-on;
        };
 
        /* HS USB Host PHY on PORT 1 */