4 files changed, 70 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index ade7a38543dc..b73780f31bce 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -863,7 +863,7 @@ dtb-$(CONFIG_ARCH_STI) += \
 	stih410-b2120.dtb \
 	stih410-b2260.dtb \
 	stih418-b2199.dtb
-dtb-$(CONFIG_ARCH_STM32)+= \
+dtb-$(CONFIG_ARCH_STM32) += \
 	stm32f429-disco.dtb \
 	stm32f469-disco.dtb \
 	stm32f746-disco.dtb \
@@ -871,7 +871,9 @@ dtb-$(CONFIG_ARCH_STM32)+= \
 	stm32429i-eval.dtb \
 	stm32746g-eval.dtb \
 	stm32h743i-eval.dtb \
-	stm32h743i-disco.dtb
+	stm32h743i-disco.dtb \
+	stm32mp157c-ed1.dtb \
+	stm32mp157c-ev1.dtb
 dtb-$(CONFIG_MACH_SUN4I) += \
 	sun4i-a10-a1000.dtb \
 	sun4i-a10-ba10-tvbox.dtb \
diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
index e5f8f58fb934..c0743305f31b 100644
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -145,6 +145,19 @@
 				ngpios = <8>;
 				gpio-ranges = <&pinctrl 0 160 8>;
 			};
+
+			uart4_pins_a: uart4@0 {
+				pins1 {
+					pinmux = <STM32_PINMUX('G', 11, AF6)>; /* UART4_TX */
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <0>;
+				};
+				pins2 {
+					pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+					bias-disable;
+				};
+			};
 		};
 
 		pinctrl_z: pin-controller-z {
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts b/arch/arm/boot/dts/stm32mp157c-ed1.dts
new file mode 100644
index 000000000000..9f90337a22e3
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157c-ed1.dts
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
+ * Author: Ludovic Barre <ludovic.barre@st.com> for STMicroelectronics.
+ */
+/dts-v1/;
+
+#include "stm32mp157c.dtsi"
+#include "stm32mp157-pinctrl.dtsi"
+
+/ {
+	model = "STMicroelectronics STM32MP157C eval daughter";
+	compatible = "st,stm32mp157c-ed1", "st,stm32mp157";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		reg = <0xC0000000 0x40000000>;
+	};
+
+	aliases {
+		serial0 = &uart4;
+	};
+};
+
+&uart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart4_pins_a>;
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
new file mode 100644
index 000000000000..57e6dbc52e09
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
+ * Author: Ludovic Barre <ludovic.barre@st.com> for STMicroelectronics.
+ */
+/dts-v1/;
+
+#include "stm32mp157c-ed1.dts"
+
+/ {
+	model = "STMicroelectronics STM32MP157C eval daughter on eval mother";
+	compatible = "st,stm32mp157c-ev1", "st,stm32mp157c-ed1", "st,stm32mp157";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	aliases {
+		serial0 = &uart4;
+	};
+};