omap3: beaglexm: fix EHCI power up GPIO dir

EHCI enable power pin is inverted (active high) in comparison
to vanilla beagle which is active low. Handle this case conditionally.

Without this fix, Beagle XM 4 port EHCI will not function and no
networking will be available

[nm@ti.com: split up, added descriptive changelogs]
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Koen Kooi <koen@beagleboard.org>
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 6c127605942ffd1fdfaec8dc1f013507dacb7f6d..af1166bd1c868e462e87d97c99f0f134781b679a 100644 (file)
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -297,9 +297,15 @@ static int beagle_twl_gpio_setup(struct device *dev,
        gpio_request(gpio + 1, "EHCI_nOC");
        gpio_direction_input(gpio + 1);
 
-       /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
+       /*
+        * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
+        * high / others active low)
+        */
        gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
-       gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
+       if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM)
+               gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
+       else
+               gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 
        /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
        gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;