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From: gregory hermant <gregory.hermant@calao-systems.com>
To: barebox@lists.infradead.org
Subject: [PATCH] Enable pull-up on Rx serial ports for the CALAO MB-QIL-A9260
Date: Fri, 03 Aug 2012 12:00:26 +0200	[thread overview]
Message-ID: <501BA13A.30605@calao-systems.com> (raw)

This patch prevents to stop the autoboot randomly for the CALAO MB-QIL-A9260.
Indeed on this board, there's no pull-up on the RX inputs for the DBGU, COM1 & COM2 serial port.
With pull-up enabled, there's no longer unwanted character received from these console (CONFIG_CONSOLE_ACTIVATE_ALL=y). 
  
Signed-off-by: Gregory Hermant <gregory.hermant@calao-systems.com>
---
 arch/arm/boards/qil-a9260/init.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boards/qil-a9260/init.c b/arch/arm/boards/qil-a9260/init.c
index 305d733..b43cace 100644
--- a/arch/arm/boards/qil-a9260/init.c
+++ b/arch/arm/boards/qil-a9260/init.c
@@ -196,11 +196,17 @@ device_initcall(qil_a9260_devices_init);
 static int qil_a9260_console_init(void)
 {
 	at91_register_uart(0, 0);
+	at91_set_A_periph(AT91_PIN_PB14, 1);    /* Enable pull-up on DRXD */
+
 	at91_register_uart(1, ATMEL_UART_CTS | ATMEL_UART_RTS
 			   | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
 			   | ATMEL_UART_RI);
+
 	at91_register_uart(2, ATMEL_UART_CTS | ATMEL_UART_RTS);
+	at91_set_A_periph(AT91_PIN_PB7, 1);	/* Enable pull-up on RXD1 */
+
 	at91_register_uart(3, ATMEL_UART_CTS | ATMEL_UART_RTS);
+	at91_set_A_periph(AT91_PIN_PB9, 1);	/* Enable pull-up on RXD2 */
 
 	return 0;
 }
-- 
1.5.6.3



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             reply	other threads:[~2012-08-03 10:00 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-03 10:00 gregory hermant [this message]
2012-08-03 13:51 ` [PATCH] Enable pull-up on Rx serial ports for the CALAO MB-QIL-A9260 Sascha Hauer

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