dts: uart: create ambiq uart binding file

This commit creates ambiq uart new binding file
and renamed the previous one as ambiq,pl011-uart

Signed-off-by: Hao Luo <hluo@ambiq.com>

Author: AlessandroLuo

drivers/serial/uart_pl011_ambiq.h

@@ -168,16 +168,16 @@ static int uart_ambiq_pm_action(const struct device *dev, enum pm_device_action
 }
 #endif /* CONFIG_PM_DEVICE */
 
-#define AMBIQ_UART_DEFINE(n)                                                                       \
+#define AMBIQ_PL011_UART_DEFINE(n)                                                                 \
 	PM_DEVICE_DT_INST_DEFINE(n, uart_ambiq_pm_action);                                         \
-	static int pwr_on_ambiq_uart_##n(void)                                                     \
+	static int pwr_on_ambiq_pl011_uart_##n(void)                                               \
 	{                                                                                          \
 		uint32_t module = (DT_INST_REG_ADDR(n) - UART0_BASE) / (UART1_BASE - UART0_BASE);  \
 		am_hal_pwrctrl_periph_e eUARTPowerModule =                                         \
 			((am_hal_pwrctrl_periph_e)(AM_HAL_PWRCTRL_PERIPH_UART0 + module));         \
 		return am_hal_pwrctrl_periph_enable(eUARTPowerModule);                             \
 	}                                                                                          \
-	static inline int clk_enable_ambiq_uart_##n(const struct device *dev, uint32_t clk)        \
+	static inline int clk_enable_ambiq_pl011_uart_##n(const struct device *dev, uint32_t clk)  \
 	{                                                                                          \
 		return clk_enable_ambiq_uart(dev, clk);                                            \
 	}

dts/bindings/serial/ambiq,pl011-uart.yaml

@@ -0,0 +1,15 @@
+# Copyright (c) 2023 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+description: Ambiq UART controller (PL011 compatible)
+
+compatible: "ambiq,pl011-uart"
+
+include: ["arm,pl011.yaml", pinctrl-device.yaml]
+
+properties:
+  pinctrl-0:
+    required: true
+
+  pinctrl-names:
+    required: true

dts/bindings/serial/ambiq,uart.yaml

@@ -1,15 +1,29 @@
-# Copyright (c) 2023 Antmicro <www.antmicro.com>
+# Copyright (c) 2025, Ambiq Micro Inc. <www.ambiq.com>
 # SPDX-License-Identifier: Apache-2.0
 
-description: Ambiq UART controller (PL011 compatible)
+description: Ambiq UART controller
 
 compatible: "ambiq,uart"
 
-include: ["arm,pl011.yaml", pinctrl-device.yaml]
+include: [uart-controller.yaml, pinctrl-device.yaml]
 
 properties:
+  reg:
+    required: true
+
+  interrupts:
+    required: true
+
   pinctrl-0:
     required: true
 
   pinctrl-names:
     required: true
+
+  clk-src:
+    type: int
+    default: 0
+    description: |
+      Set the UART clock source, apollo510 only
+      0x0 - HFRC
+      0x1 - SYSPLL