From: Amelie Delaunay <amelie.delaunay@foss.st.com>

Add the pinctrl properties to the existing node usart2 on the board
stm32mp215f-dk.
While there, add also the boot phase tags to usart2 node.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp21-pinctrl.dtsi | 32 +++++++++++++++++++
 arch/arm64/boot/dts/st/stm32mp215f-dk.dts     | 17 ++++++++++
 2 files changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp21-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp21-pinctrl.dtsi
index 7e9b74f3d9d96..01d64a1f0760f 100644
--- a/arch/arm64/boot/dts/st/stm32mp21-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp21-pinctrl.dtsi
@@ -4,3 +4,35 @@
  * Author: Amelie Delaunay <amelie.delaunay@foss.st.com> for STMicroelectronics.
  */
 #include <dt-bindings/pinctrl/stm32-pinfunc.h>
+
+&pinctrl {
+	usart2_pins_a: usart2-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('A', 4, AF6)>; /* USART2_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('A', 8, AF8)>; /* USART2_RX */
+			bias-disable;
+		};
+	};
+
+	usart2_idle_pins_a: usart2-idle-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('A', 4, ANALOG)>; /* USART2_TX */
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('A', 8, AF8)>; /* USART2_RX */
+			bias-disable;
+		};
+	};
+
+	usart2_sleep_pins_a: usart2-sleep-0 {
+		pins {
+			pinmux = <STM32_PINMUX('A', 4, ANALOG)>, /* USART2_TX */
+				 <STM32_PINMUX('A', 8, ANALOG)>; /* USART2_RX */
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/st/stm32mp215f-dk.dts b/arch/arm64/boot/dts/st/stm32mp215f-dk.dts
index 7bdaeaa5ab0fb..8571dcf427fc4 100644
--- a/arch/arm64/boot/dts/st/stm32mp215f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp215f-dk.dts
@@ -8,6 +8,8 @@
 
 #include "stm32mp215.dtsi"
 #include "stm32mp21xf.dtsi"
+#include "stm32mp21-pinctrl.dtsi"
+#include "stm32mp21xxan-pinctrl.dtsi"
 
 / {
 	model = "STMicroelectronics STM32MP215F-DK Discovery Board";
@@ -45,5 +47,20 @@ &arm_wdt {
 };
 
 &usart2 {
+	bootph-all;
+	pinctrl-names = "default", "idle", "sleep";
+	pinctrl-0 = <&usart2_pins_a>;
+	pinctrl-1 = <&usart2_idle_pins_a>;
+	pinctrl-2 = <&usart2_sleep_pins_a>;
 	status = "okay";
 };
+
+&usart2_pins_a {
+	bootph-all;
+	pins1 {
+		bootph-all;
+	};
+	pins2 {
+		bootph-all;
+	};
+};
-- 
2.34.1