ARM: dts: stm32: Add idle/sleep pinmux for USART3 on stm32mp15

Add idle and sleep mux option for the USART3 pins_a.

This is used on the Phycore STM32MP1.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index 527c76c..358cbe9 100644 (file)
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -2402,6 +2402,23 @@
                };
        };
 
+       usart3_idle_pins_a: usart3-idle-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('B', 10, ANALOG)>; /* USART3_TX */
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */
+                       bias-disable;
+               };
+       };
+
+       usart3_sleep_pins_a: usart3-sleep-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
+                                <STM32_PINMUX('B', 12, ANALOG)>; /* USART3_RX */
+               };
+       };
+
        usart3_pins_b: usart3-1 {
                pins1 {
                        pinmux = <STM32_PINMUX('B', 10, AF7)>, /* USART3_TX */