From 3d3906c03b97602d82843e6f01141737b573ba03 Mon Sep 17 00:00:00 2001
From: Gil Pitney <gil.pitney@linaro.org>
Date: Sat, 4 Feb 2017 21:50:45 -0600
Subject: [PATCH] dts: arm: Add base DTS support for TI CC3200

This patch adds the necessary DTS, YAML, and Makefile changes necessary
to generate proper include information for the CC3200.  The initial
base support includes SRAM, FLASH, and UART devices.

Change-Id: I8ef8c24c3915198dbb5cfeb2431aa6dc68267d0e
Signed-off-by: Andy Gross <andy.gross@linaro.org>
---
 dts/arm/Makefile                 |  1 +
 dts/arm/cc3200_launchxl.dts      | 22 ++++++++++++++
 dts/arm/cc3200_launchxl.fixup    |  7 +++++
 dts/arm/cc32xx_launchxl.dtsi     | 52 ++++++++++++++++++++++++++++++++
 dts/arm/yaml/ti,cc32xx-uart.yaml | 31 +++++++++++++++++++
 5 files changed, 113 insertions(+)
 create mode 100644 dts/arm/cc3200_launchxl.dts
 create mode 100644 dts/arm/cc3200_launchxl.fixup
 create mode 100644 dts/arm/cc32xx_launchxl.dtsi
 create mode 100644 dts/arm/yaml/ti,cc32xx-uart.yaml

diff --git a/dts/arm/Makefile b/dts/arm/Makefile
index fb604da20d9..3659a83811c 100644
--- a/dts/arm/Makefile
+++ b/dts/arm/Makefile
@@ -1,5 +1,6 @@
 ifeq ($(CONFIG_HAS_DTS),y)
 dtb-$(CONFIG_BOARD_FRDM_K64F)	=	frdm_k64f.dts_compiled
 dtb-$(CONFIG_BOARD_HEXIWEAR_K64)	=	hexiwear_k64.dts_compiled
+dtb-$(CONFIG_BOARD_CC3200_LAUNCHXL)	=	cc3200_launchxl.dts_compiled
 always	:= $(dtb-y)
 endif
diff --git a/dts/arm/cc3200_launchxl.dts b/dts/arm/cc3200_launchxl.dts
new file mode 100644
index 00000000000..2b9df631b70
--- /dev/null
+++ b/dts/arm/cc3200_launchxl.dts
@@ -0,0 +1,22 @@
+/dts-v1/;
+
+#include "cc32xx_launchxl.dtsi"
+
+/ {
+	model = "TI CC3200 LaunchXL";
+	compatible = "ti,cc32xx";
+
+	aliases {
+		uart_0 = &uart0;
+		uart_1 = &uart1;
+	};
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+};
+
+&uart0 {
+	status = "ok";
+};
diff --git a/dts/arm/cc3200_launchxl.fixup b/dts/arm/cc3200_launchxl.fixup
new file mode 100644
index 00000000000..a28d91f9d72
--- /dev/null
+++ b/dts/arm/cc3200_launchxl.fixup
@@ -0,0 +1,7 @@
+#define CONFIG_NUM_IRQS			ARM_ARMV7M_NVIC_E000E100_NUM_IRQS
+#define CONFIG_NUM_IRQ_PRIO_BITS	ARM_ARMV7M_NVIC_E000E100_NUM_IRQ_PRIO_BITS
+
+#define EXCEPTION_UARTA0		TI_CC32XX_UART_4000C000_IRQ_0
+#define CONFIG_UART_CC32XX_IRQ_PRI	TI_CC32XX_UART_4000C000_ZEPHYR_IRQ_PRIO
+#define UART_CC32XX_BASE_ADDRESS	TI_CC32XX_UART_4000C000_BASE_ADDRESS
+#define CONFIG_UART_CC32XX_BAUDRATE	TI_CC32XX_UART_4000C000_BAUD_RATE
diff --git a/dts/arm/cc32xx_launchxl.dtsi b/dts/arm/cc32xx_launchxl.dtsi
new file mode 100644
index 00000000000..83f8095989f
--- /dev/null
+++ b/dts/arm/cc32xx_launchxl.dtsi
@@ -0,0 +1,52 @@
+#include "armv7-m.dtsi"
+#include <inc/hw_memmap.h>
+#include <inc/hw_ints.h>
+
+/* Note: Zephyr uses exception numbers, vs the IRQ #s used by the CC3200 SDK */
+/* which are offset by 16: */
+#define EXP_UARTA0 (INT_UARTA0 - 16)
+#define EXP_UARTA1 (INT_UARTA1 - 16)
+
+/ {
+	cpus {
+		cpu@0 {
+			compatible = "arm,cortex-m4";
+		};
+	};
+
+	sram0: memory {
+		compatible = "sram";
+		reg = <0x20004000 0x3C000>;
+	};
+
+	flash0: serial-flash {
+		compatible = "serial-flash";
+		reg = <0x0 0x80000>;
+	};
+
+	soc {
+		uart0: uart@UARTA0_BASE {
+			compatible = "ti,cc32xx-uart";
+			reg = <UARTA0_BASE 0x4c>;
+			interrupts = <EXP_UARTA0>;
+			zephyr,irq-prio = <3>;
+			baud-rate = <115200>;
+			status = "disabled";
+		};
+
+		uart1: uart@UARTA1_BASE {
+			compatible = "ti,cc32xx-uart";
+			reg = <UARTA1_BASE 0x4c>;
+			interrupts = <EXP_UARTA1>;
+			zephyr,irq-prio = <3>;
+			baud-rate = <115200>;
+			status = "disabled";
+		};
+
+	};
+};
+
+&nvic {
+	num-irq-prio-bits = <3>;
+	num-irqs = <179>;
+};
diff --git a/dts/arm/yaml/ti,cc32xx-uart.yaml b/dts/arm/yaml/ti,cc32xx-uart.yaml
new file mode 100644
index 00000000000..c45059fb9a2
--- /dev/null
+++ b/dts/arm/yaml/ti,cc32xx-uart.yaml
@@ -0,0 +1,31 @@
+---
+title: TI CC32XX Uart
+id: ti,cc32xx-uart
+version: 0.1
+
+description: >
+    This binding gives a base representation of the TI CC32XX UART
+
+inherits:
+  - !include uart.yaml
+  - !include zephyr_devices.yaml
+
+properties:
+  - compatible:
+      type: string
+      category: required
+      description: compatible strings
+      constraint: "ti,cc32xx-uart"
+
+  - reg:
+      type: array
+      description: mmio register space
+      generation: define
+      category: required
+
+  - interrupts:
+      type: array
+      category: required
+      description: required interrupts
+      generation: define
+...