dts: add CC13xx / CC26xx SPI bindings and nodes

Add bindings and device tree nodes for TI CC13xx / CC26xx SPI support.

Signed-off-by: Brett Witherspoon <spoonb@cdspooner.com>

dts/arm/ti/cc13x2_cc26x2.dtsi

@@ -87,6 +87,26 @@
 			status = "disabled";
 			label = "I2C_0";
 		};
+
+		spi0: spi@40000000 {
+			compatible = "ti,cc13xx-cc26xx-spi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40000000 0x1000>;
+			interrupts = <7 0>;
+			status = "disabled";
+			label = "SPI_0";
+		};
+
+		spi1: spi@40008000 {
+			compatible = "ti,cc13xx-cc26xx-spi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40008000 0x1000>;
+			interrupts = <8 0>;
+			status = "disabled";
+			label = "SPI_1";
+		};
 	};
 };
 

dts/bindings/spi/ti,cc13xx-cc26xx-spi.yaml

@@ -0,0 +1,49 @@
+#
+# Copyright (c) 2019 Brett Witherspoon
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+---
+title: TI SimpleLink CC13xx / CC26xx SPI
+version: 0.1
+
+description: >
+    This is a representation of the TI SimpleLink CC13xx / CC26xx SPI node
+
+inherits:
+    !include spi.yaml
+
+properties:
+    compatible:
+      constraint: "ti,cc13xx-cc26xx-spi"
+
+    reg:
+      type: array
+      category: required
+      description: mmio register space
+      generation: define
+
+    sck-pin:
+      type: int
+      category: required
+      description: SCK pin
+      generation: define
+
+    mosi-pin:
+      type: int
+      category: required
+      description: MOSI pin
+      generation: define
+
+    miso-pin:
+      type: int
+      category: required
+      description: MISO pin
+      generation: define
+
+    cs-pin:
+      type: int
+      category: optional
+      description: CS pin
+      generation: define
+...