board: rockchip: Add Edgeble Neu2 IO Board

Neural Compute Module 2(Neu2) IO board is an industrial form factor
IO board from Edgeble AI.

General features:
- microSD slot
- MIPI DSI connector
- 2x USB Host
- 1x USB OTG
- Ethernet
- mini PCIe
- Onboard PoE
- RS485, RS232, CAN
- Micro Phone array
- Speaker
- RTC battery slot
- 40-pin expansion

Neu2 needs to mount on top of this IO board in order to create complete
Edgeble Neural Compute Module 2(Neu2) IO platform.

Add support for it.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>

arch/arm/dts/rv1126-edgeble-neu2-io-u-boot.dtsi

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
+
+#include "rv1126-u-boot.dtsi"
+
+&sdio {
+	status = "disabled";
+};

arch/arm/mach-rockchip/rv1126/Kconfig

@@ -1,5 +1,19 @@
 if ROCKCHIP_RV1126
 
+config TARGET_RV1126_NEU2
+	bool "Edgeble Neural Compute Module 2(Neu2) SoM"
+	help
+	  Neu2:
+	  Neural Compute Module 2(Neu2) is a 96boards SoM-CB compute module
+	  based on Rockchip RV1126 from Edgeble AI.
+	  Neu2 powered with Consumer grade (0 to +80 °C) RV1126 SoC.
+	  Neu2k powered with Industrial grade (-40 °C to +85 °C) RV1126K SoC.
+
+	  Neu2-IO:
+	  Neural Compute Module 2(Neu2) IO board is an industrial form factor
+	  IO board and Neu2 needs to mount on top of this IO board in order to
+	  create complete Edgeble Neural Compute Module 2(Neu2) IO platform.
+
 config SOC_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select HAS_CUSTOM_SYS_INIT_SP_ADDR
@@ -40,4 +54,6 @@ config SYS_MALLOC_F_LEN
 config TEXT_BASE
 	default 0x600000
 
+source board/edgeble/neural-compute-module-2/Kconfig
+
 endif

board/edgeble/neural-compute-module-2/Kconfig

@@ -0,0 +1,16 @@
+if TARGET_RV1126_NEU2
+
+config SYS_BOARD
+	default "neural-compute-module-2"
+
+config SYS_VENDOR
+	default "edgeble"
+
+config SYS_CONFIG_NAME
+	default "neural-compute-module-2"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select RAM_ROCKCHIP_LPDDR4
+
+endif

board/edgeble/neural-compute-module-2/MAINTAINERS

@@ -0,0 +1,6 @@
+RV1126-ECM0
+M:	Jagan Teki <jagan@edgeble.ai>
+S:	Maintained
+F:	board/edgeble/neural-compute-module-2
+F:	include/configs/neural-compute-module-2.h
+F:	configs/neu2-io-rv1126_defconfig

board/edgeble/neural-compute-module-2/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y += neu2.o

board/edgeble/neural-compute-module-2/neu2.c

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */

configs/neu2-io-rv1126_defconfig

@@ -0,0 +1,57 @@
+CONFIG_ARM=y
+CONFIG_SPL_SKIP_LOWLEVEL_INIT_ONLY=y
+CONFIG_TPL_SKIP_LOWLEVEL_INIT_ONLY=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_SYS_ARCH_TIMER=y
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEFAULT_DEVICE_TREE="rv1126-edgeble-neu2-io"
+CONFIG_ROCKCHIP_RV1126=y
+CONFIG_TARGET_RV1126_NEU2=y
+CONFIG_DEBUG_UART_BASE=0xff570000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SYS_LOAD_ADDR=0xe00800
+CONFIG_DEBUG_UART=y
+CONFIG_SYS_MONITOR_LEN=614400
+CONFIG_FIT_VERBOSE=y
+CONFIG_DEFAULT_FDT_FILE="rv1126-edgeble-neu2-io.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_MISC_INIT_R=y
+CONFIG_SPL_PAD_TO=0x7f8000
+CONFIG_SPL_NO_BSS_LIMIT=y
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
+# CONFIG_CMD_BOOTD is not set
+CONFIG_SYS_BOOTM_LEN=0x4000000
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_IMI is not set
+# CONFIG_CMD_XIMG is not set
+CONFIG_CMD_GPT=y
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_ISO_PARTITION is not set
+CONFIG_EFI_PARTITION_ENTRIES_NUMBERS=64
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_MISC=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_PWM_ROCKCHIP=y
+# CONFIG_RAM_ROCKCHIP_DEBUG is not set
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYSRESET=y
+# CONFIG_TPL_SYSRESET is not set
+CONFIG_DM_THERMAL=y
+CONFIG_SPL_TINY_MEMSET=y
+CONFIG_LZO=y
+CONFIG_ERRNO_STR=y

doc/board/rockchip/rockchip.rst

@@ -89,6 +89,9 @@ List of mainline supported Rockchip boards:
      - Rockchip Evb-rv1108 (evb-rv1108)
      - Elgin-R1 (elgin-rv1108)
 
+* rv1126
+     - Edgeble Neural Compute Module 2 SoM - Neu2/Neu2k (neu2-io-r1126)
+
 Building
 --------
 

include/configs/neural-compute-module-2.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
+
+#ifndef __NEURAL_COMPUTE_MODULE_2_H
+#define __NEURAL_COMPUTE_MODULE_2_H
+
+#define ROCKCHIP_DEVICE_SETTINGS \
+		"stdout=serial,vidconsole\0" \
+		"stderr=serial,vidconsole\0"
+
+#include <configs/rv1126_common.h>
+
+#undef BOOT_TARGET_DEVICES
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(MMC, mmc, 1)
+
+#endif /* __NEURAL_COMPUTE_MODULE_2_H */