system_rev comes from u-boot and is a constant 0x20, so 
Bx boards also fall in this 'if' and will get setup with the 
wrong gpio_wp pin. Switch to using the Beagle revision routine 
to correcly set pin 23 only for C1/2/3 and C4 Boards. Bx boards
will then use the correct default pin setting.

Signed-off-by: Robert Nelson <robertcnel...@gmail.com>
---
 arch/arm/mach-omap2/board-omap3beagle.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c 
b/arch/arm/mach-omap2/board-omap3beagle.c
index 62d69a9..e9af4fd 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -274,7 +274,8 @@ static struct gpio_led gpio_leds[];
 static int beagle_twl_gpio_setup(struct device *dev,
                unsigned gpio, unsigned ngpio)
 {
-       if (system_rev >= 0x20 && system_rev <= 0x34301000) {
+       if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
+               (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
                omap_mux_init_gpio(23, OMAP_PIN_INPUT);
                mmc[0].gpio_wp = 23;
        } else {
-- 
1.7.0.4

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