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>
diff --git a/arch/arm/boot/dts/sama5d3_uart.dtsi b/arch/arm/boot/dts/sama5d3_uart.dtsi
index 186377d..f599f8a 100644
--- a/arch/arm/boot/dts/sama5d3_uart.dtsi
+++ b/arch/arm/boot/dts/sama5d3_uart.dtsi
@@ -23,16 +23,16 @@
uart0 {
pinctrl_uart0: uart0-0 {
atmel,pins =
- <AT91_PIOC 29 AT91_PERIPH_A AT91_PINCTRL_NONE /* PC29 periph A, conflicts with PWMFI2, ISI_D8 */
- AT91_PIOC 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>; /* PC30 periph A with pullup, 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 /* PA30 periph B, conflicts with TWD0, ISI_VSYNC */
- AT91_PIOA 31 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>; /* PA31 periph B with pullup, 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 */
};
};
};