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

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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>
This commit is contained in:
Roger Quadros 2013-06-18 19:04:45 +03:00 committed by Benoit Cousson
parent 5bd2100ed2
commit 6f56929375
1 changed files with 7 additions and 0 deletions
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7
arch/arm/boot/dts/omap4-panda-common.dtsi
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@ -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 */