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/at91rm9200.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'arch/arm/boot/dts/at91rm9200.dtsi')

diff --git a/arch/arm/boot/dts/at91rm9200.dtsi b/arch/arm/boot/dts/at91rm9200.dtsi
index ba61893a..3f3149c 100644
--- a/arch/arm/boot/dts/at91rm9200.dtsi
+++ b/arch/arm/boot/dts/at91rm9200.dtsi
@@ -511,8 +511,8 @@
 				uart1 {
 					pinctrl_uart1: uart1-0 {
 						atmel,pins =
-							<AT91_PIOB 20 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PB20 periph A with pullup */
-							 AT91_PIOB 21 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PB21 periph A */
+							<AT91_PIOB 20 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOB 21 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
 					};
 
 					pinctrl_uart1_rts: uart1_rts-0 {
@@ -545,8 +545,8 @@
 				uart2 {
 					pinctrl_uart2: uart2-0 {
 						atmel,pins =
-							<AT91_PIOA 22 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PA22 periph A */
-							 AT91_PIOA 23 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;	/* PA23 periph A with pullup */
+							<AT91_PIOA 22 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+							 AT91_PIOA 23 AT91_PERIPH_A AT91_PINCTRL_NONE>;
 					};
 
 					pinctrl_uart2_rts: uart2_rts-0 {
@@ -563,8 +563,8 @@
 				uart3 {
 					pinctrl_uart3: uart3-0 {
 						atmel,pins =
-							<AT91_PIOA 5 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* PA5 periph B with pullup */
-							 AT91_PIOA 6 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA6 periph B */
+							<AT91_PIOA 5 AT91_PERIPH_B AT91_PINCTRL_NONE
+							 AT91_PIOA 6 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;
 					};
 
 					pinctrl_uart3_rts: uart3_rts-0 {
-- 
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