board: rockchip: Add Edgeble Neural Compute Module 6B

Neural Compute Module 6B(Neu6B) is a 96boards SoM-CB compute module
based on Rockchip RK3588J from Edgeble AI.

Add support for this SoM and IO board.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3588-edgeble-neu6b-io-u-boot.dtsi b/arch/arm/dts/rk3588-edgeble-neu6b-io-u-boot.dtsi
new file mode 100644
index 0000000..cd7626b
--- /dev/null
+++ b/arch/arm/dts/rk3588-edgeble-neu6b-io-u-boot.dtsi
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
+ */
+
+#include "rk3588j-u-boot.dtsi"
+
+/ {
+	aliases {
+		mmc0 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = &uart2;
+		u-boot,spl-boot-order = &sdmmc;
+	};
+};
+
+&sdmmc {
+	bus-width = <4>;
+	status = "okay";
+};
diff --git a/arch/arm/mach-rockchip/rk3588/Kconfig b/arch/arm/mach-rockchip/rk3588/Kconfig
index 0255f65..d72ef92 100644
--- a/arch/arm/mach-rockchip/rk3588/Kconfig
+++ b/arch/arm/mach-rockchip/rk3588/Kconfig
@@ -19,6 +19,16 @@
 	  IO board and Neu6a needs to mount on top of this IO board in order to
 	  create complete Edgeble Neural Compute Module 6A(Neu6A) IO platform.
 
+	  Neu6B:
+	  Neural Compute Module 6B(Neu6B) is a 96boards SoM-CB compute module
+	  based on Rockchip RK3588J from Edgeble AI.
+
+	  Neu6A-IO:
+	  Neural Compute Module 6B(Neu6B) 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 6B(Neu6B) IO platform.
+
+config TARGET_ROCK5B_RK3588
 config TARGET_ROCK5B_RK3588
 	bool "Radxa ROCK5B RK3588 board"
 	select BOARD_LATE_INIT