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authorPeter Rosin <peda@axentia.se>2018-03-21 18:35:50 +0300
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2018-03-21 23:46:59 +0300
commit5e04822f7db504cd2cdc9074bc79c84657222567 (patch)
tree3675e87591cdca02b358ca0876552a4b691a69ed /arch/arm/boot/dts/sama5d3.dtsi
parente8fd0adf105e132fd84545997bbef3d5edc2c9c1 (diff)
downloadlinux-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.dtsi24
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 {