dts: Introduce stm32h7 ethernet compatible

Add stm32h7 ethernet compatible "st,stm32h7-ethernet",
used also for stm32h5.

Signed-off-by: IBEN EL HADJ MESSAOUD Marwa <[email protected]>

Author: marwaiehm-st

dts/arm/st/h5/stm32h5.dtsi

@@ -512,7 +512,7 @@
 		};
 
 		mac: ethernet@40028000 {
-			compatible = "st,stm32-ethernet";
+			compatible = "st,stm32h7-ethernet", "st,stm32-ethernet";
 			reg = <0x40028000 0x8000>;
 			interrupts = <106 0>;
 			clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";

dts/arm/st/h7/stm32h7.dtsi

@@ -1022,7 +1022,7 @@
 		};
 
 		mac: ethernet@40028000 {
-			compatible = "st,stm32-ethernet";
+			compatible = "st,stm32h7-ethernet", "st,stm32-ethernet";
 			reg = <0x40028000 0x8000>;
 			interrupts = <61 0>;
 			clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";

dts/bindings/ethernet/st,stm32-ethernet-common.yaml

@@ -0,0 +1,20 @@
+# Copyright (c) 2024, STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+# Common fields for STM32 Ethernet peripherals.
+
+include: [ethernet-controller.yaml, pinctrl-device.yaml]
+
+properties:
+  reg:
+    required: true
+  interrupts:
+    required: true
+  clocks:
+    required: true
+  clock-names:
+    required: true
+  pinctrl-0:
+    required: true
+  pinctrl-names:
+    required: true

dts/bindings/ethernet/st,stm32-ethernet.yaml

@@ -1,22 +1,9 @@
 # Copyright (c) 2020, Linaro Limited
+# Copyright (c) 2024, STMicroelectronics
 # SPDX-License-Identifier: Apache-2.0
 
 description: ST STM32 Ethernet
 
 compatible: "st,stm32-ethernet"
 
-include: [ethernet-controller.yaml, pinctrl-device.yaml]
-
-properties:
-  reg:
-    required: true
-  interrupts:
-    required: true
-  clocks:
-    required: true
-  clock-names:
-    required: true
-  pinctrl-0:
-    required: true
-  pinctrl-names:
-    required: true
+include: st,stm32-ethernet-common.yaml

dts/bindings/ethernet/st,stm32h7-ethernet.yaml

@@ -0,0 +1,14 @@
+# Copyright (c) 2024, STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+description: |
+  ST STM32H7 Ethernet
+
+  This binding file describes the device tree properties required to configure
+  and use the Ethernet controller on STM32H7 and STM32H5 series microcontrollers.
+  The `st,stm32h7-ethernet` compatible string can be used for both series,
+  ensuring flexibility and ease of configuration.
+
+compatible: "st,stm32h7-ethernet"
+
+include: st,stm32-ethernet-common.yaml