sensortag: Add TI's SensorTag board.

Add support for TI's SensorTag board, which uses a CC2650 SoC.

Signed-off-by: Geoffrey Le Gourriérec <geoffrey.legourrierec@smile.fr>

boards/arm/cc2650_sensortag/Kconfig

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+#
+# Kconfig - TI CC2650 SensorTag configuration
+#
+
+if BOARD_CC2650_SENSORTAG
+
+endif # BOARD_CC2650_SENSORTAG

boards/arm/cc2650_sensortag/Kconfig.board

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+#
+# Kconfig - TI SimpleLink CC2650 SensorTag Board
+#
+
+config BOARD_CC2650_SENSORTAG
+	bool "TI CC2650 SensorTag"
+	depends on SOC_CC2650

boards/arm/cc2650_sensortag/Kconfig.defconfig

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: Apache-2.0
+#
+# Kconfig - TI CC2650 SensorTag board configuration
+#
+
+if BOARD_CC2650_SENSORTAG
+
+config BOARD
+	default cc2650_sensortag
+
+endif # BOARD_CC2650_SENSORTAG

boards/arm/cc2650_sensortag/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# Temporary solution: always launch pinmux init
+obj-y += pinmux.o

boards/arm/cc2650_sensortag/board.h

@@ -0,0 +1,58 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Board-specific information for Texas Instruments'
+ * SensorTag device.
+ */
+
+
+#ifndef _CC2650_SENSORTAG_BOARD_H_
+#define _CC2650_SENSORTAG_BOARD_H_
+
+/* Match a feature on the board to an I/O pin
+ * (DIOx in local jargon)
+ */
+#define SENSORTAG_BUTTON2	0
+#define SENSORTAG_TMP_RDY	1
+#define SENSORTAG_AUDIO_D	2
+#define SENSORTAG_REED		3
+#define SENSORTAG_BUTTON1	4
+#define SENSORTAG_SDA		5
+#define SENSORTAG_SCL		6
+#define SENSORTAG_MPU_INT	7
+#define SENSORTAG_SDA_HP	8
+#define SENSORTAG_SCL_HP	9
+#define SENSORTAG_LED1		10
+#define SENSORTAG_DP7		11
+#define SENSORTAG_AUDIO_CLK	SENSORTAG_DP7
+#define SENSORTAG_MPU_PWR	12
+#define SENSORTAG_MIC_PWR	13
+#define SENSORTAG_FLASH_CS	14
+#define SENSORTAG_LED2		15
+#define SENSORTAG_DP12		16
+#define SENSORTAG_AUDIO_FS	SENSORTAG_DP12
+#define SENSORTAG_TDO		SENSORTAG_DP12
+#define SENSORTAG_DP8		17
+#define SENSORTAG_SCLK		SENSORTAG_DP8
+#define SENSORTAG_TDI		SENSORTAG_DP8
+#define SENSORTAG_DP9		18
+#define SENSORTAG_MISO		SENSORTAG_DP9
+#define SENSORTAG_DP10		19
+#define SENSORTAG_MOSI		SENSORTAG_DP10
+#define SENSORTAG_DP11		20
+#define SENSORTAG_CSN		SENSORTAG_DP11
+#define SENSORTAG_BUZZER	21
+#define SENSORTAG_DP6		22
+#define SENSORTAG_AUDIO_DO	SENSORTAG_DP6
+#define SENSORTAG_DP2		23
+#define SENSORTAG_DP1		24
+#define SENSORTAG_DP0		25
+#define SENSORTAG_VDD		26
+#define SENSORTAG_DP3		27
+#define SENSORTAG_DP4		28
+#define SENSORTAG_UART_RX	SENSORTAG_DP4
+#define SENSORTAG_DP5		29
+#define SENSORTAG_UART_TX	SENSORTAG_DP5
+#define SENSORTAG_DP_D		30
+
+#endif /* _CC2650_SENSORTAG_BOARD_H_ */

boards/arm/cc2650_sensortag/cc2650_sensortag_defconfig

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# General options
+
+CONFIG_HAS_DTS=y
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=48000000
+CONFIG_FLASH=y
+CONFIG_FLASH_BASE_ADDRESS=0x00000000
+CONFIG_SRAM_BASE_ADDRESS=0x20000000
+CONFIG_BOOTLOADER_SRAM_SIZE=0
+CONFIG_XIP=y
+CONFIG_PRINTK=y
+
+# Platform-specific options
+
+CONFIG_ARM=y
+CONFIG_CORTEX_M_SYSTICK=y
+CONFIG_BOARD_CC2650_SENSORTAG=y
+CONFIG_SOC_FAMILY_TISIMPLELINK=y
+CONFIG_SOC_SERIES_CC2650=y
+CONFIG_SOC_CC2650=y
+
+# Pinmux driver
+CONFIG_PINMUX=y
+CONFIG_PINMUX_CC2650=y
+CONFIG_PINMUX_CC2650_INIT_PRIO=1
+
+# GPIO driver
+CONFIG_GPIO=y
+CONFIG_GPIO_CC2650=y
+CONFIG_GPIO_CC2650_INIT_PRIO=0
+
+# UART driver
+CONFIG_SERIAL=y
+CONFIG_SERIAL_HAS_DRIVER=y
+CONFIG_UART_STELLARIS=y
+CONFIG_UART_STELLARIS_PORT_0=y
+
+# Console driver
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Random number generator driver
+CONFIG_RANDOM_GENERATOR=y
+CONFIG_CC2650_TRNG_RANDOM_GENERATOR=y
+CONFIG_CC2650_TRNG_IRQ_PRIO=0

boards/arm/cc2650_sensortag/pinmux.c

@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Board-specific pin multiplexing for Texas Instruments'
+ * SensorTag device.
+ *
+ * For now, this only setups a default configuration
+ * at initialization (not a real pinmux driver).
+ */
+
+#include <toolchain/gcc.h>
+#include <init.h>
+#include <pinmux.h>
+#include <soc.h>
+
+#include "board.h"
+
+
+static int sensortag_pinmux_init(struct device *dev)
+{
+	dev = device_get_binding(CONFIG_PINMUX_NAME);
+
+	/* DIO10 is LED 1 */
+	pinmux_pin_set(dev, SENSORTAG_LED1, CC2650_IOC_GPIO);
+	pinmux_pin_input_enable(dev, SENSORTAG_LED1, PINMUX_OUTPUT_ENABLED);
+
+	/* DIO15 is LED 2 */
+	pinmux_pin_set(dev, SENSORTAG_LED2, CC2650_IOC_GPIO);
+	pinmux_pin_input_enable(dev, SENSORTAG_LED2, PINMUX_OUTPUT_ENABLED);
+
+	/* UART RX */
+	pinmux_pin_set(dev, SENSORTAG_UART_RX, CC2650_IOC_MCU_UART0_RX);
+	pinmux_pin_input_enable(dev, SENSORTAG_UART_RX, PINMUX_INPUT_ENABLED);
+
+	/* UART TX */
+	pinmux_pin_set(dev, SENSORTAG_UART_TX, CC2650_IOC_MCU_UART0_TX);
+	pinmux_pin_input_enable(dev, SENSORTAG_UART_TX, PINMUX_OUTPUT_ENABLED);
+
+	return 0;
+}
+
+SYS_INIT(sensortag_pinmux_init, PRE_KERNEL_1,
+	 CONFIG_PINMUX_INIT_PRIORITY);

dts/arm/Makefile

@@ -41,6 +41,6 @@ dtb-$(CONFIG_BOARD_SAM_E70_XPLAINED)	=	sam_e70_xplained.dts_compiled
 dtb-$(CONFIG_BOARD_ARDUINO_DUE)		=	arduino_due.dts_compiled
 dtb-$(CONFIG_BOARD_SAM4S_XPLAINED)	=	sam4s_xplained.dts_compiled
 dtb-$(CONFIG_BOARD_OLIMEX_STM32_E407)	=	olimex_stm32_e407.dts_compiled
-
+dtb-$(CONFIG_BOARD_CC2650_SENSORTAG)	= 	cc2650_sensortag.dts_compiled
 always	:= $(dtb-y)
 endif

dts/arm/cc2650_sensortag.dts

@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+/dts-v1/;
+
+#include "ti/cc2650.dtsi"
+
+/ {
+	model = "TI CC2650 SensorTag";
+	compatible = "ti,cc2650";
+
+	aliases {
+		gpio_a = &gpioa;
+		pinmux_a = &pinmux_a;
+		prcm0 = &prcm0;
+		trng0 = &trng0;
+		uart_0 = &uart0;
+	};
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+};
+
+&gpioa {
+	status = "ok";
+};
+
+&trng0 {
+	status = "ok";
+};
+
+&uart0 {
+	status = "ok";
+	current-speed = <115200>;
+};
+

dts/arm/cc2650_sensortag.fixup

@@ -0,0 +1,8 @@
+#define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
+
+#define TI_STELLARIS_UART_4000C000_BASE_ADDRESS  TI_STELLARIS_UART_40001000_BASE_ADDRESS
+#define TI_STELLARIS_UART_4000C000_CURRENT_SPEED TI_STELLARIS_UART_40001000_CURRENT_SPEED
+#define UART_STELLARIS_CLK_FREQ  CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC
+#define TI_STELLARIS_UART_4000C000_IRQ_0 TI_STELLARIS_UART_40001000_IRQ_0
+#define TI_STELLARIS_UART_4000C000_IRQ_0_PRIORITY TI_STELLARIS_UART_40001000_IRQ_0_PRIORITY
+#define TI_STELLARIS_UART_4000C000_LABEL TI_STELLARIS_UART_40001000_LABEL

dts/arm/ti/cc2650.dtsi

@@ -57,6 +57,7 @@
 			reg = <0x40001000 0x4C>;
 			interrupts = <5 0>, <6 0>;
 			status = "disabled";
+			label = "UART_0";
 		};
 	};
 };