board: rockchip: Add Edgeble Neural Compute Module 6

Neural Compute Module 6(Neu2) is a 96boards SoM-CB compute module
based on Rockchip RK3588 from Edgeble AI.

General features:
- Rockchip RK3588
- up to 32GB LPDDR4x
- up to 128GB eMMC
- 2x MIPI CSI2 FPC

On module WiFi6/BT5 is available in the following Neu6 variants.

Neural Compute Module 6(Neu6) IO board is an industrial form factor
ready-to-use IO board from Edgeble AI.

IO board offers plenty of peripherals and connectivity options and
this patch enables basic eMMC and UART which is enough to successfully
boot Linux.

Neu6 needs to mount on top of this IO board in order to create a
complete Edgeble Neural Compute Module 6(Neu6) IO platform.

Boot log for the record,

DDR Version V1.08 20220617
LPDDR4X, 2112MHz
channel[0] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB
channel[1] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB
channel[2] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB
channel[3] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB
Manufacturer ID:0x6
CH0 RX Vref:31.7%, TX Vref:21.8%,21.8%
CH1 RX Vref:30.7%, TX Vref:22.8%,23.8%
CH2 RX Vref:30.7%, TX Vref:22.8%,22.8%
CH3 RX Vref:30.7%, TX Vref:21.8%,21.8%
change to F1: 528MHz
change to F2: 1068MHz
change to F3: 1560MHz
change to F0: 2112MHz
out

U-Boot SPL 2023.01-00952-g1d1785a516-dirty (Jan 30 2023 - 19:53:55 +0530)
Trying to boot from MMC1
INFO:    Preloader serial: 2
NOTICE:  BL31: v2.3():v2.3-391-g856309329:derrick.huang
NOTICE:  BL31: Built : 14:15:50, Jul 18 2022
INFO:    ext 32k is not valid
INFO:    GICv3 without legacy support detected.
INFO:    ARM GICv3 driver initialized in EL3
INFO:    system boots from cpu-hwid-0
INFO:    idle_st=0x21fff, pd_st=0x11fff9, repair_st=0xfff70001
INFO:    dfs DDR fsp_params[0].freq_mhz= 2112MHz
INFO:    dfs DDR fsp_params[1].freq_mhz= 528MHz
INFO:    dfs DDR fsp_params[2].freq_mhz= 1068MHz
INFO:    dfs DDR fsp_params[3].freq_mhz= 1560MHz
INFO:    BL31: Initialising Exception Handling Framework
INFO:    BL31: Initializing runtime services
WARNING: No OPTEE provided by BL2 boot loader, Booting device without OPTEE initialization. SMC`s destined for OPTEE will return SMC_UNK
ERROR:   Error initializing runtime service opteed_fast
INFO:    BL31: Preparing for EL3 exit to normal world
INFO:    Entry point address = 0xa00000
INFO:    SPSR = 0x3c9

U-Boot 2023.01-00952-g1d1785a516-dirty (Jan 30 2023 - 19:53:55 +0530)

Model: Edgeble Neu6A IO Board
DRAM:  7.5 GiB (effective 3.7 GiB)
Core:  71 devices, 15 uclasses, devicetree: separate
MMC:   mmc@fe2c0000: 0
Loading Environment from nowhere... OK
In:    serial@feb50000
Out:   serial@feb50000
Err:   serial@feb50000
Model: Edgeble Neu6A IO Board
Net:   No ethernet found.
Hit any key to stop autoboot:  0
=>

Add support for Edgeble Neu6 Model A IO Board.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

9 files changed, 158 insertions, 0 deletions

diff --git a/arch/arm/dts/rk3588-edgeble-neu6a-io-u-boot.dtsi b/arch/arm/dts/rk3588-edgeble-neu6a-io-u-boot.dtsi
new file mode 100644
index 0000000000..3235bd36e4
--- /dev/null
+++ b/arch/arm/dts/rk3588-edgeble-neu6a-io-u-boot.dtsi
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
+
+#include "rk3588-u-boot.dtsi"
+
+/ {
+	aliases {
+		mmc0 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = &uart2;
+		u-boot,spl-boot-order = &sdmmc;
+	};
+};
+
+&sdmmc {
+	bus-width = <4>;
+	bootph-all;
+	u-boot,spl-fifo-mode;
+	status = "okay";
+};
diff --git a/arch/arm/mach-rockchip/rk3588/Kconfig b/arch/arm/mach-rockchip/rk3588/Kconfig
index e8c14e4187..def4094e2e 100644
--- a/arch/arm/mach-rockchip/rk3588/Kconfig
+++ b/arch/arm/mach-rockchip/rk3588/Kconfig
@@ -1,5 +1,18 @@
 if ROCKCHIP_RK3588
 
+config TARGET_RK3588_NEU6
+	bool "Edgeble Neural Compute Module 6(Neu6) SoM"
+	select BOARD_LATE_INIT
+	help
+	  Neu6:
+	  Neural Compute Module 6A(Neu6a) is a 96boards SoM-CB compute module
+	  based on Rockchip RK3588 from Edgeble AI.
+
+	  Neu6-IO:
+	  Neural Compute Module 6(Neu6) IO board is an industrial form factor
+	  IO board and Neu6a needs to mount on top of this IO board in order to
+	  create complete Edgeble Neural Compute Module 6(Neu6) IO platform.
+
 config ROCKCHIP_BOOT_MODE_REG
 	default 0xfd588080
 
@@ -12,4 +25,6 @@ config SYS_SOC
 config SYS_MALLOC_F_LEN
 	default 0x80000
 
+source board/edgeble/neural-compute-module-6/Kconfig
+
 endif
diff --git a/board/edgeble/neural-compute-module-6/Kconfig b/board/edgeble/neural-compute-module-6/Kconfig
new file mode 100644
index 0000000000..c445454dde
--- /dev/null
+++ b/board/edgeble/neural-compute-module-6/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_RK3588_NEU6
+
+config SYS_BOARD
+	default "neural-compute-module-6"
+
+config SYS_VENDOR
+	default "edgeble"
+
+config SYS_CONFIG_NAME
+	default "neural-compute-module-6"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif
diff --git a/board/edgeble/neural-compute-module-6/MAINTAINERS b/board/edgeble/neural-compute-module-6/MAINTAINERS
new file mode 100644
index 0000000000..249df957f1
--- /dev/null
+++ b/board/edgeble/neural-compute-module-6/MAINTAINERS
@@ -0,0 +1,6 @@
+RK3588-NEU6
+M:	Jagan Teki <jagan@edgeble.ai>
+S:	Maintained
+F:	board/edgeble/neural-compute-module-6
+F:	include/configs/neural-compute-module-6.h
+F:	configs/neu6a-io-rk3588_defconfig
diff --git a/board/edgeble/neural-compute-module-6/Makefile b/board/edgeble/neural-compute-module-6/Makefile
new file mode 100644
index 0000000000..28310b1b34
--- /dev/null
+++ b/board/edgeble/neural-compute-module-6/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y += neu6.o
diff --git a/board/edgeble/neural-compute-module-6/neu6.c b/board/edgeble/neural-compute-module-6/neu6.c
new file mode 100644
index 0000000000..3d2262ce97
--- /dev/null
+++ b/board/edgeble/neural-compute-module-6/neu6.c
@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
diff --git a/configs/neu6a-io-rk3588_defconfig b/configs/neu6a-io-rk3588_defconfig
new file mode 100644
index 0000000000..fb5a2b7dbc
--- /dev/null
+++ b/configs/neu6a-io-rk3588_defconfig
@@ -0,0 +1,67 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_TEXT_BASE=0x00a00000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc00000
+CONFIG_DEFAULT_DEVICE_TREE="rk3588-edgeble-neu6a-io"
+CONFIG_ROCKCHIP_RK3588=y
+CONFIG_SPL_ROCKCHIP_COMMON_BOARD=y
+CONFIG_SPL_MMC=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_STACK_R_ADDR=0x600000
+CONFIG_TARGET_RK3588_NEU6=y
+CONFIG_SPL_STACK=0x400000
+CONFIG_DEBUG_UART_BASE=0xFEB50000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3588-edgeble-neu6a-io.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_SPL_MAX_SIZE=0x20000
+CONFIG_SPL_PAD_TO=0x7f8000
+CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
+CONFIG_SPL_BSS_START_ADDR=0x4000000
+CONFIG_SPL_BSS_MAX_SIZE=0x4000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_ATF=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SPL_REGMAP=y
+CONFIG_SPL_SYSCON=y
+CONFIG_SPL_CLK=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_MISC=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_ROCKCHIP=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_GMAC_ROCKCHIP=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_SPL_RAM=y
+CONFIG_DM_RESET=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYSRESET=y
+# CONFIG_BINMAN_FDT is not set
+CONFIG_ERRNO_STR=y
diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index c1de34b3cb..0290d81f9d 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -86,8 +86,13 @@ List of mainline supported Rockchip boards:
      - Radxa ROCK Pi 4 (rock-pi-4-rk3399)
      - Rockchip Evb-RK3399 (evb_rk3399)
      - Theobroma Systems RK3399-Q7 SoM - Puma (puma_rk3399)
+
 * rk3568
      - Rockchip Evb-RK3568 (evb-rk3568)
+
+* rk3588
+     - Edgeble Neural Compute Module 6 SoM - Neu6a (neu6a-io-rk3588)
+
 * rv1108
      - Rockchip Evb-rv1108 (evb-rv1108)
      - Elgin-R1 (elgin-rv1108)
diff --git a/include/configs/neural-compute-module-6.h b/include/configs/neural-compute-module-6.h
new file mode 100644
index 0000000000..52501b7ab8
--- /dev/null
+++ b/include/configs/neural-compute-module-6.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
+
+#ifndef __NEURAL_COMPUTE_MODULE_6_H
+#define __NEURAL_COMPUTE_MODULE_6_H
+
+#define ROCKCHIP_DEVICE_SETTINGS \
+		"stdout=serial,vidconsole\0" \
+		"stderr=serial,vidconsole\0"
+
+#include <configs/rk3588_common.h>
+
+#endif /* __NEURAL_COMPUTE_MODULE_6_H */