From: "Prchal Jiří" <jiri.prchal@aksignal.cz>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] at91sam9260ek: pull up on gpio
Date: Wed, 27 Apr 2011 08:38:06 +0200 [thread overview]
Message-ID: <4DB7B9CE.1030002@aksignal.cz> (raw)
This fixes floating pin PB14 (DRXD) if it is unconnected, witch cause sometimes to stop autoboot by receiving char
(noise). It turns internal pull up on this pin.
It turns pull up on all other pins where should be pull up and is set in driver too.
Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
--- u-boot-2010.09/include/configs/at91sam9260ek.h.orig 2010-09-28 23:20:55.000000000 +0200
+++ u-boot-2010.09/include/configs/at91sam9260ek.h 2011-04-27 08:05:16.231133740 +0200
@@ -55,6 +55,7 @@
* Hardware drivers
*/
#define CONFIG_AT91_GPIO 1
+#define CONFIG_AT91_GPIO_PULLUP 1
#define CONFIG_ATMEL_USART 1
#undef CONFIG_USART0
#undef CONFIG_USART1
next reply other threads:[~2011-04-27 6:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-27 6:38 Prchal Jiří [this message]
2011-06-06 6:13 ` [U-Boot] [PATCH] at91sam9260ek: pull up on gpio Reinhard Meyer
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