arm: dts: Support SC573-EZKIT

Adds minimal device tree for Analog Devices' SC573-EZKIT board and
common files for the SC57x/SC5xx family.

This also adds all sc5* devicetrees to ARM SC5XX in MAINTAINERS, and
adds the ADSP Linux mailing list as the list for ARM SC5XX.

Co-developed-by: Greg Malysa <greg.malysa@timesys.com>
Signed-off-by: Greg Malysa <greg.malysa@timesys.com>
Co-developed-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 2d931c2..d219490 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1258,6 +1258,8 @@
 					imx8mm-cl-iot-gate-ied-tpm0.dtbo \
 					imx8mm-cl-iot-gate-ied-tpm1.dtbo
 
+dtb-$(CONFIG_TARGET_SC573_EZKIT) += sc573-ezkit.dtb
+
 ifneq ($(CONFIG_TARGET_IMX8MP_RSB3720A1_4G)$(CONFIG_TARGET_IMX8MP_RSB3720A1_6G),)
 dtb-y += imx8mp-rsb3720-a1.dtb
 endif
diff --git a/arch/arm/dts/sc573-ezkit.dts b/arch/arm/dts/sc573-ezkit.dts
new file mode 100644
index 0000000..0dc2962
--- /dev/null
+++ b/arch/arm/dts/sc573-ezkit.dts
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+/dts-v1/;
+
+#include "sc57x.dtsi"
+
+/ {
+	model = "ADI SC573-EZKIT";
+	compatible = "adi,sc573-ezkit", "adi,sc57x";
+};
diff --git a/arch/arm/dts/sc57x.dtsi b/arch/arm/dts/sc57x.dtsi
new file mode 100644
index 0000000..ddfcae8
--- /dev/null
+++ b/arch/arm/dts/sc57x.dtsi
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#include "sc5xx.dtsi"
+
+/ {
+	gic: interrupt-controller@310b2000 {
+		compatible = "arm,cortex-a5-gic";
+		#interrupt-cells = <3>;
+		#address-cells = <0>;
+		interrupt-controller;
+		reg = <0x310B2000 0x1000>,
+		      <0x310B4000 0x100>;
+	};
+};
+
+&timer0 {
+	clocks = <&clk ADSP_SC57X_CLK_CGU0_SCLK0>;
+};
diff --git a/arch/arm/dts/sc5xx.dtsi b/arch/arm/dts/sc5xx.dtsi
new file mode 100644
index 0000000..3f440da
--- /dev/null
+++ b/arch/arm/dts/sc5xx.dtsi
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/adi-sc5xx-clock.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	clocks {
+		sys_clkin0: sys_clkin0 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <25000000>;
+			bootph-all;
+		};
+
+		sys_clkin1: sys_clkin1 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <25000000>;
+			bootph-all;
+		};
+	};
+
+	soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		device_type = "soc";
+		ranges;
+		bootph-all;
+
+		timer0: timer@31018000 {
+			compatible = "adi,sc5xx-gptimer";
+			reg = <0x31018004 0x100>,
+			      <0x31018060 0x100>;
+			status = "okay";
+			bootph-all;
+		};
+
+		clk: clocks@3108d000 {
+			reg = <0x3108d000 0x1000>;
+			#clock-cells = <1>;
+			clocks = <&sys_clkin0>, <&sys_clkin1>;
+			clock-names = "sys_clkin0", "sys_clkin1";
+			status = "okay";
+			bootph-all;
+		};
+	};
+};