dts/bindings: add TI CC13xx/CC26xx flash controller bindings

This includes DTS bindings for the Texas Instruments CC13xx/CC26xx flash
controller driver and adds support for it in CC1352R and CC2652R SoCs
DTS files.

Signed-off-by: Piotr Dymacz <[email protected]>

Author: pepe2k

dts/arm/ti/cc1352r.dtsi

@@ -11,22 +11,22 @@
 	sram0: memory@20000000 {
 		reg = <0x20000000 DT_SIZE_K(80)>;
 	};
+};
 
-	flash0: serial-flash@0 {
-		reg = <0x0 DT_SIZE_K(352)>;
+&flash0 {
+	reg = <0x0 DT_SIZE_K(352)>;
 
-		partitions {
-			compatible = "fixed-partitions";
-			#address-cells = <1>;
-			#size-cells = <1>;
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
 
-			/* CCFG registers occupy the last 88 bytes of flash */
-			ti_ccfg_partition: partition@57fa8 {
-				compatible = "zephyr,memory-region";
-				label = "ti_ccfg";
-				reg = <0x57fa8 88>;
-				zephyr,memory-region = "FLASH_CCFG";
-			};
+		/* CCFG registers occupy the last 88 bytes of flash */
+		ti_ccfg_partition: partition@57fa8 {
+			compatible = "zephyr,memory-region";
+			label = "ti_ccfg";
+			reg = <0x57fa8 88>;
+			zephyr,memory-region = "FLASH_CCFG";
 		};
 	};
 };

dts/arm/ti/cc13x2_cc26x2.dtsi

@@ -11,6 +11,7 @@
 / {
 	chosen {
 		zephyr,entropy = &trng;
+		zephyr,flash-controller = &flash_controller;
 	};
 
 	cpus {
@@ -35,10 +36,6 @@
 		zephyr,memory-region = "SRAM1";
 	};
 
-	flash0: serial-flash@0 {
-		compatible = "serial-flash";
-	};
-
 	sysclk: system-clock {
 		compatible = "fixed-clock";
 		clock-frequency = <48000000>;
@@ -69,6 +66,21 @@
 			label = "TRNG";
 		};
 
+		flash_controller: flash-controller@40030000 {
+			compatible = "ti,cc13xx-cc26xx-flash-controller";
+			reg = <0x40030000 0x4000>;
+			label="FLASH_CTRL";
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			flash0: flash@0 {
+				compatible = "soc-nv-flash";
+				erase-block-size = <DT_SIZE_K(8)>;
+				write-block-size = <1>;
+			};
+		};
+
 		uart0: uart@40001000 {
 			compatible = "ti,cc13xx-cc26xx-uart";
 			reg = <0x40001000 0x1000>;

dts/arm/ti/cc2652r.dtsi

@@ -11,22 +11,22 @@
 	sram0: memory@20000000 {
 		reg = <0x20000000 DT_SIZE_K(80)>;
 	};
+};
 
-	flash0: serial-flash@0 {
-		reg = <0x0 DT_SIZE_K(352)>;
+&flash0 {
+	reg = <0x0 DT_SIZE_K(352)>;
 
-		partitions {
-			compatible = "fixed-partitions";
-			#address-cells = <1>;
-			#size-cells = <1>;
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
 
-			/* CCFG registers occupy the last 88 bytes of flash */
-			ti_ccfg_partition: partition@57fa8 {
-				compatible = "zephyr,memory-region";
-				label = "ti_ccfg";
-				reg = <0x57fa8 88>;
-				zephyr,memory-region = "FLASH_CCFG";
-			};
+		/* CCFG registers occupy the last 88 bytes of flash */
+		ti_ccfg_partition: partition@57fa8 {
+			compatible = "zephyr,memory-region";
+			label = "ti_ccfg";
+			reg = <0x57fa8 88>;
+			zephyr,memory-region = "FLASH_CCFG";
 		};
 	};
 };

dts/bindings/flash_controller/ti,cc13xx-cc26xx-flash-controller.yaml

@@ -0,0 +1,5 @@
+description: Texas Instruments CC13xx/CC26xx flash controller
+
+compatible: "ti,cc13xx-cc26xx-flash-controller"
+
+include: flash-controller.yaml