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@xxxxxx> Signed-off-by: Roger Quadros <rogerq@xxxxxx> --- arch/arm/boot/dts/omap4-panda-common.dtsi | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi index 7a21e8e..e6e6c39 100644 --- a/arch/arm/boot/dts/omap4-panda-common.dtsi +++ b/arch/arm/boot/dts/omap4-panda-common.dtsi @@ -80,6 +80,13 @@ 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 */ -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
