board-omap3beagle: set i2c-3 to 100kHz

Changing it do 100kHz is needed to make more devices works properly. Controlling the TI DLP Pico projector[1] doesn't work properly at 400kHz, 100kHz and lower work fine. EDID readout is unaffected by this change.

[1] http://focus.ti.com/dlpdmd/docs/dlpdiscovery.tsp?sectionId=60&tabId=2234

Signed-off-by: Koen Kooi <koen@beagleboard.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 5f5cc3965319890b646711c8bae73a6048210ec1..eb261afa9047b90d5ba5ed1c3f36598bf3580dcb 100644 (file)
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -243,7 +243,9 @@ static int __init omap3_beagle_i2c_init(void)
 #ifdef CONFIG_I2C2_OMAP_BEAGLE
        omap_register_i2c_bus(2, 400, NULL, 0);
 #endif
-       omap_register_i2c_bus(3, 400, NULL, 0);
+       /* Bus 3 is attached to the DVI port where devices like the pico DLP
+        * projector don't work reliably with 400kHz */
+       omap_register_i2c_bus(3, 100, NULL, 0);
        return 0;
 }