From 5e04822f7db504cd2cdc9074bc79c84657222567 Mon Sep 17 00:00:00 2001
From: Peter Rosin <peda@axentia.se>
Date: Wed, 21 Mar 2018 16:35:50 +0100
Subject: ARM: dts: at91: fixes uart pinctrl, set pullup on rx, clear pullup on
 tx

Remove pullup on uart TX signals, they are push-pull outputs thus
pullups are pointless.

Add pullup on uart RX signals, they prevent the RX signals to be left
floating and so consuming a useless extra amount of power in crowbarred
state if nothing is connected to RX.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 arch/arm/boot/dts/at91sam9x5.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'arch/arm/boot/dts/at91sam9x5.dtsi')

diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index fee4fe51a97e..a3c3c3128148 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -520,8 +520,8 @@
 				usart0 {
 					pinctrl_usart0: usart0-0 {
 						atmel,pins =
-							<AT91_PIOA 0 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PA0 periph A with pullup */
-							 AT91_PIOA 1 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PA1 periph A */
+							<AT91_PIOA 0 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOA 1 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
 					};
 
 					pinctrl_usart0_rts: usart0_rts-0 {
@@ -543,8 +543,8 @@
 				usart1 {
 					pinctrl_usart1: usart1-0 {
 						atmel,pins =
-							<AT91_PIOA 5 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PA5 periph A with pullup */
-							 AT91_PIOA 6 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PA6 periph A */
+							<AT91_PIOA 5 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOA 6 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
 					};
 
 					pinctrl_usart1_rts: usart1_rts-0 {
@@ -566,8 +566,8 @@
 				usart2 {
 					pinctrl_usart2: usart2-0 {
 						atmel,pins =
-							<AT91_PIOA 7 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PA7 periph A with pullup */
-							 AT91_PIOA 8 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PA8 periph A */
+							<AT91_PIOA 7 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOA 8 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
 					};
 
 					pinctrl_usart2_rts: usart2_rts-0 {
-- 
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