diff options
| author | Peter Rosin <peda@axentia.se> | 2018-03-21 16:35:50 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-03-21 21:46:59 +0100 |
| commit | 5e04822f7db504cd2cdc9074bc79c84657222567 (patch) | |
| tree | 3675e87591cdca02b358ca0876552a4b691a69ed /arch/arm/boot/dts/at91sam9x5.dtsi | |
| parent | e8fd0adf105e132fd84545997bbef3d5edc2c9c1 (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/at91sam9x5.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/at91sam9x5.dtsi | 12 |
1 files changed, 6 insertions, 6 deletions
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 { |