boards: arm: Add support for 96Boards Meerkat96 board

Add board suppor for 96Boards Meerkat96 board from Novtech based on
NXP i.MX7 multi core processor. Zephyr is ported to run on the single
core Cortex-M co-processor on this board.

More information about this board can be found in 96Boards website:
https://www.96boards.org/product/imx7-96/

By default Zephyr console output is available via UART1 available at
the 40pin LS connector.

Signed-off-by: Manivannan Sadhasivam <[email protected]>

CODEOWNERS

@@ -58,6 +58,7 @@
 /boards/arm/                              @MaureenHelm @galak
 /boards/arm/96b_argonkey/                 @avisconti
 /boards/arm/96b_carbon/                   @rsalveti @idlethread
+/boards/arm/96b_meerkat96/                @Mani-Sadhasivam
 /boards/arm/96b_nitrogen/                 @idlethread
 /boards/arm/96b_neonkey/                  @Mani-Sadhasivam
 /boards/arm/96b_stm32_sensor_mez/         @Mani-Sadhasivam

boards/arm/96b_meerkat96/96b_meerkat96.dts

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2019, Linaro Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <nxp/nxp_imx7d_m4.dtsi>
+
+/ {
+	model = "Meerkat96 Board";
+	compatible = "novtech,imx7d-meerkat96";
+
+	chosen {
+		zephyr,flash = &tcml_code;
+		zephyr,sram = &tcmu_sys;
+		zephyr,console = &uart1;
+		zephyr,shell-uart = &uart1;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		green_led_0: led_0 {
+			gpios = <&gpio1 4 GPIO_INT_ACTIVE_LOW>;
+			label = "User LED1";
+		};
+		green_led_1: led_1 {
+			gpios = <&gpio1 5 GPIO_INT_ACTIVE_LOW>;
+			label = "User LED2";
+		};
+		green_led_2: led_2 {
+			gpios = <&gpio1 6 GPIO_INT_ACTIVE_LOW>;
+			label = "User LED3";
+		};
+		green_led_3: led_3 {
+			gpios = <&gpio1 7 GPIO_INT_ACTIVE_LOW>;
+			label = "User LED4";
+		};
+	};
+
+	aliases {
+		gpio-1 = &gpio1;
+		led0   = &green_led_0;
+		led1   = &green_led_1;
+		led2   = &green_led_2;
+		led3   = &green_led_3;
+		uart-1 = &uart1;
+		mu-b   = &mub;
+	};
+};
+
+&uart1 {
+	status = "ok";
+	current-speed = <115200>;
+	modem-mode = <0>;
+};
+
+&gpio1 {
+	status = "ok";
+};
+
+&mub {
+	status = "ok";
+};

boards/arm/96b_meerkat96/96b_meerkat96.yaml

@@ -0,0 +1,23 @@
+#
+# Copyright (c) 2019, Linaro Ltd.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+identifier: 96b_meerkat96
+name: 96Boards Meerkat96
+type: mcu
+arch: arm
+ram: 32
+flash: 32
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+supported:
+  - gpio
+  - shell
+testing:
+  ignore_tags:
+    - net
+    - bluetooth

boards/arm/96b_meerkat96/96b_meerkat96_defconfig

@@ -0,0 +1,24 @@
+#
+# Copyright (c) 2019, Linaro Ltd.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_ARM=y
+CONFIG_SOC_FAMILY_IMX=y
+CONFIG_SOC_SERIES_IMX7_M4=y
+CONFIG_SOC_MCIMX7_M4=y
+CONFIG_BOARD_96B_MEERKAT96=y
+CONFIG_CORTEX_M_SYSTICK=y
+
+# enable uart driver
+CONFIG_SERIAL=y
+CONFIG_SERIAL_HAS_DRIVER=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+
+# console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_CONSOLE_HAS_DRIVER=y
+
+CONFIG_XIP=y

boards/arm/96b_meerkat96/CMakeLists.txt

@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2019, Linaro Ltd.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+zephyr_library()
+zephyr_library_include_directories(${ZEPHYR_BASE}/drivers)
+zephyr_library_sources(pinmux.c)

boards/arm/96b_meerkat96/Kconfig.board

@@ -0,0 +1,11 @@
+# Kconfig - 96Boards Meerkat96 board
+#
+# Copyright (c) 2019, Linaro Ltd.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+config BOARD_96B_MEERKAT96
+	bool "96Boards Meerkat96 board"
+	depends on SOC_SERIES_IMX7_M4
+	select SOC_PART_NUMBER_MCIMX7D5EVM10SC

boards/arm/96b_meerkat96/Kconfig.defconfig

@@ -0,0 +1,34 @@
+# Kconfig - 96Boards Meerkat96 board
+#
+# Copyright (c) 2019, Linaro Ltd.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if BOARD_96B_MEERKAT96
+
+config BOARD
+	default "96b_meerkat96"
+
+if GPIO_IMX
+
+config GPIO_IMX_PORT_1
+	default y
+
+endif # GPIO_IMX
+
+if UART_IMX
+
+config UART_IMX_UART_1
+	default y
+
+endif # UART_IMX
+
+if !XIP
+config FLASH_SIZE
+	default 0
+config FLASH_BASE_ADDRESS
+	default 0
+endif
+
+endif # BOARD_96B_MEERKAT96