[U-Boot] [PATCH,v1,4/4] udoo: Fix watchdog during kernel boot.

[Giuseppe Pagano]

uDoo uses APX823-31W5 watchdog chip. Timeout is about 1.2 seconds.
To disabled watchdog during kernel boot, WDI pin of that chip needs to be in "high impedance" state.
I.mx6 gpio configuration does not contemplate tristate, so pin is set as input in high impedance.

Signed-off-by: Giuseppe Pagano <giuseppe.pagano at seco.com>
CC: Stefano Babic <sbabic at denx.de>
CC: Fabio Estevam <fabio.estevam at freescale.com>
---
 board/udoo/udoo.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/board/udoo/udoo.c b/board/udoo/udoo.c
index b53f70c..af8004e 100644
--- a/board/udoo/udoo.c
+++ b/board/udoo/udoo.c
@@ -169,6 +169,7 @@ static void setup_iomux_wdog(void)
 	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
 	gpio_direction_output(WDT_TRG, 0);
 	gpio_direction_output(WDT_EN, 1);
+	gpio_direction_input(WDT_TRG);
 }
 
 static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR };
-- 
1.7.10.4