[PATCH] linux-2.6-windriver: omap3: beaglexm: fix EHCI power up GPIO dir

[Darren Hart <dvhart@linux.intel.com>]

The following patch from Koen's angstrom-linux repository fixes initialization
of the Beagleboard xM's on-board USB hub and makes it possible to use the
on-board network port.

Please merge contrib/dvhart/beagleboard-standard with beagleboard-standard.

Pull URL: git://git.pokylinux.org/linux-2.6-windriver-contrib.git
  Branch: dvhart/beagleboard-standard
  Browse: http://git.pokylinux.org/cgit.cgi/linux-2.6-windriver-contrib/log/?h=dvhart/beagleboard-standard

Thanks,
    Darren Hart <dvhart@linux.intel.com>


From 23a104853de8cdb351b7747af799463215dc4d8c Mon Sep 17 00:00:00 2001
From: Koen Kooi <koen@beagleboard.org>
Date: Tue, 11 Jan 2011 17:13:35 +0000
Subject: [PATCH] omap3: beaglexm: fix EHCI power up GPIO dir

commit a5624323866c06156ca548b8515d9347fdd5188e angstrom-linux

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>
---
 arch/arm/mach-omap2/board-omap3beagle.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 5bcf6ee..80c203c 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -250,9 +250,15 @@ 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;
-- 
1.7.1
-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel