From 138c2b2f175b781242342ee96fa125558c34a245 Mon Sep 17 00:00:00 2001
From: Sylvain Rochet <sylvain.rochet@finsecur.com>
Date: Sun, 16 Oct 2016 18:21:45 +0200
Subject: ARM: dts: at91: fixes dbgu pinctrl, set pullup on rx, clear pullup on
 tx

Remove pullup on dbgu DTXD signal, it is a push-pull output thus the
pullup is pointless.

Add pullup on dbgu DRXD signal, it prevents the DRXD signal to be left
floating and so consuming a useless extra amount of power in crowbarred
state if nothing is externally connected to dbgu.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
 arch/arm/boot/dts/at91sam9g45.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/arm/boot/dts/at91sam9g45.dtsi')

diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index b3501ae2a3bd..e567d5fd3f9d 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -478,8 +478,8 @@
 				dbgu {
 					pinctrl_dbgu: dbgu-0 {
 						atmel,pins =
-							<AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB12 periph A */
-							 AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PB13 periph A */
+							<AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+							 AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE>;
 					};
 				};
 
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