From: Giuseppe Pagano <giuseppe.pagano@seco.com>
Date: Fri, 15 Nov 2013 16:42:54 +0000 (+0100)
Subject: udoo: Fix watchdog during kernel boot.
X-Git-Tag: v2014.01-rc3~9^2~47^2~29
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=db6801dec36c9e0703c47ec065ee17278edbe904;p=u-boot

udoo: Fix watchdog during kernel boot.

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@seco.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
CC: Stefano Babic <sbabic@denx.de>
CC: Fabio Estevam <fabio.estevam@freescale.com>
---

diff --git a/board/udoo/udoo.c b/board/udoo/udoo.c
index 3257aafe1a..081d517f53 100644
--- a/board/udoo/udoo.c
+++ b/board/udoo/udoo.c
@@ -168,6 +168,7 @@ 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 };