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/sama5d3.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/sama5d3.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/sama5d3.dtsi | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi index b9c05b57735e..eae5e1ee9cd8 100644 --- a/arch/arm/boot/dts/sama5d3.dtsi +++ b/arch/arm/boot/dts/sama5d3.dtsi @@ -861,24 +861,24 @@ uart0 { pinctrl_uart0: uart0-0 { atmel,pins = - <AT91_PIOC 29 AT91_PERIPH_A AT91_PINCTRL_NONE /* conflicts with PWMFI2, ISI_D8 */ - AT91_PIOC 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; /* conflicts with ISI_PCK */ + <AT91_PIOC 29 AT91_PERIPH_A AT91_PINCTRL_PULL_UP /* conflicts with PWMFI2, ISI_D8 */ + AT91_PIOC 30 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* conflicts with ISI_PCK */ }; }; uart1 { pinctrl_uart1: uart1-0 { atmel,pins = - <AT91_PIOA 30 AT91_PERIPH_B AT91_PINCTRL_NONE /* conflicts with TWD0, ISI_VSYNC */ - AT91_PIOA 31 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>; /* conflicts with TWCK0, ISI_HSYNC */ + <AT91_PIOA 30 AT91_PERIPH_B AT91_PINCTRL_PULL_UP /* conflicts with TWD0, ISI_VSYNC */ + AT91_PIOA 31 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* conflicts with TWCK0, ISI_HSYNC */ }; }; usart0 { pinctrl_usart0: usart0-0 { atmel,pins = - <AT91_PIOD 17 AT91_PERIPH_A AT91_PINCTRL_NONE /* PD17 periph A */ - AT91_PIOD 18 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; /* PD18 periph A with pullup */ + <AT91_PIOD 17 AT91_PERIPH_A AT91_PINCTRL_PULL_UP + AT91_PIOD 18 AT91_PERIPH_A AT91_PINCTRL_NONE>; }; pinctrl_usart0_rts_cts: usart0_rts_cts-0 { @@ -891,8 +891,8 @@ usart1 { pinctrl_usart1: usart1-0 { atmel,pins = - <AT91_PIOB 28 AT91_PERIPH_A AT91_PINCTRL_NONE /* PB28 periph A */ - AT91_PIOB 29 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; /* PB29 periph A with pullup */ + <AT91_PIOB 28 AT91_PERIPH_A AT91_PINCTRL_PULL_UP + AT91_PIOB 29 AT91_PERIPH_A AT91_PINCTRL_NONE>; }; pinctrl_usart1_rts_cts: usart1_rts_cts-0 { @@ -905,8 +905,8 @@ usart2 { pinctrl_usart2: usart2-0 { atmel,pins = - <AT91_PIOE 25 AT91_PERIPH_B AT91_PINCTRL_NONE /* PE25 periph B, conflicts with A25 */ - AT91_PIOE 26 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>; /* PE26 periph B with pullup, conflicts NCS0 */ + <AT91_PIOE 25 AT91_PERIPH_B AT91_PINCTRL_PULL_UP /* conflicts with A25 */ + AT91_PIOE 26 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* conflicts NCS0 */ }; pinctrl_usart2_rts_cts: usart2_rts_cts-0 { @@ -919,8 +919,8 @@ usart3 { pinctrl_usart3: usart3-0 { atmel,pins = - <AT91_PIOE 18 AT91_PERIPH_B AT91_PINCTRL_NONE /* PE18 periph B, conflicts with A18 */ - AT91_PIOE 19 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>; /* PE19 periph B with pullup, conflicts with A19 */ + <AT91_PIOE 18 AT91_PERIPH_B AT91_PINCTRL_PULL_UP /* conflicts with A18 */ + AT91_PIOE 19 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* conflicts with A19 */ }; pinctrl_usart3_rts_cts: usart3_rts_cts-0 { |