diff options
| author | Peter Rosin <peda@axentia.se> | 2018-03-21 18:35:50 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-03-21 23:46:59 +0300 |
| commit | 5e04822f7db504cd2cdc9074bc79c84657222567 (patch) | |
| tree | 3675e87591cdca02b358ca0876552a4b691a69ed /arch/arm/boot/dts/at91sam9rl.dtsi | |
| parent | e8fd0adf105e132fd84545997bbef3d5edc2c9c1 (diff) | |
| download | linux-5e04822f7db504cd2cdc9074bc79c84657222567.tar.xz | |
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/at91sam9rl.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/at91sam9rl.dtsi | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/boot/dts/at91sam9rl.dtsi b/arch/arm/boot/dts/at91sam9rl.dtsi index 6765cee8ce21..bd001cca25a4 100644 --- a/arch/arm/boot/dts/at91sam9rl.dtsi +++ b/arch/arm/boot/dts/at91sam9rl.dtsi @@ -720,8 +720,8 @@ usart1 { pinctrl_usart1: usart1-0 { atmel,pins = - <AT91_PIOA 11 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>, - <AT91_PIOA 12 AT91_PERIPH_A AT91_PINCTRL_NONE>; + <AT91_PIOA 11 AT91_PERIPH_A AT91_PINCTRL_NONE>, + <AT91_PIOA 12 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; }; pinctrl_usart1_rts: usart1_rts-0 { @@ -743,8 +743,8 @@ usart2 { pinctrl_usart2: usart2-0 { atmel,pins = - <AT91_PIOA 13 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>, - <AT91_PIOA 14 AT91_PERIPH_A AT91_PINCTRL_NONE>; + <AT91_PIOA 13 AT91_PERIPH_A AT91_PINCTRL_NONE>, + <AT91_PIOA 14 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; }; pinctrl_usart2_rts: usart2_rts-0 { @@ -766,8 +766,8 @@ usart3 { pinctrl_usart3: usart3-0 { atmel,pins = - <AT91_PIOB 0 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>, - <AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_NONE>; + <AT91_PIOB 0 AT91_PERIPH_A AT91_PINCTRL_NONE>, + <AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; }; pinctrl_usart3_rts: usart3_rts-0 { |