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authorPeter Rosin2018-03-21 16:35:50 +0100
committerAlexandre Belloni2018-03-21 21:46:59 +0100
commit5e04822f7db504cd2cdc9074bc79c84657222567 (patch)
tree3675e87591cdca02b358ca0876552a4b691a69ed /arch/arm/boot/dts/at91sam9n12.dtsi
parente8fd0adf105e132fd84545997bbef3d5edc2c9c1 (diff)
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>
Diffstat (limited to 'arch/arm/boot/dts/at91sam9n12.dtsi')
-rw-r--r--arch/arm/boot/dts/at91sam9n12.dtsi4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index 4b62f4f963f6..37cb81f457b5 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -641,8 +641,8 @@
uart1 {
pinctrl_uart1: uart1-0 {
atmel,pins =
- <AT91_PIOC 16 AT91_PERIPH_C AT91_PINCTRL_PULL_UP /* PC17 periph C with pullup */
- AT91_PIOC 17 AT91_PERIPH_C AT91_PINCTRL_NONE>; /* PC16 periph C */
+ <AT91_PIOC 16 AT91_PERIPH_C AT91_PINCTRL_NONE
+ AT91_PIOC 17 AT91_PERIPH_C AT91_PINCTRL_PULL_UP>;
};
};