cm2-b: add support

arch/arm/dts/meson-gxl-s905x-cm2-b.dts

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023 Guoxin "7Ji" Pu
+ */
+
+#include "meson-gxl-s905x-khadas-vim.dts"
+
+/ {
+	compatible = "cumebox,cm2-b", "amlogic,s905x", "amlogic,meson-gxl";
+	model = "CumeBox CM2-B";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00 0x00 0x00 0x40000000>;
+	};
+
+	smbios {
+		compatible = "u-boot,sysinfo-smbios";
+
+		smbios {
+			system {
+				manufacturer = "CumeBox";
+				product = "CM2-B";
+			};
+
+			baseboard {
+				manufacturer = "CumeBox";
+				product = "CM2-B";
+			};
+
+			chassis {
+				manufacturer = "CumeBox";
+				product = "CM2-B";
+			};
+		};
+	};
+};
+
+/* Wi-Fi is not needed for early boot */
+&sd_emmc_a {
+	status = "disabled";
+};

configs/cm2-b_defconfig

@@ -0,0 +1,63 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MESON=y
+CONFIG_TEXT_BASE=0x01000000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x2000
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="meson-gxl-s905x-cm2-b"
+CONFIG_MESON_GXL=y
+CONFIG_DEBUG_UART_BASE=0xc81004c0
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_IDENT_STRING=" CM2-B"
+CONFIG_SYS_LOAD_ADDR=0x1000000
+CONFIG_DEBUG_UART=y
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20000000
+CONFIG_REMAKE_ELF=y
+CONFIG_OF_BOARD_SETUP=y
+CONFIG_CONSOLE_MUX=y
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_MISC_INIT_R=y
+CONFIG_SYS_MAXARGS=32
+# CONFIG_CMD_BDI is not set
+# CONFIG_CMD_IMI is not set
+CONFIG_CMD_ADC=y
+CONFIG_CMD_GPIO=y
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_REGULATOR=y
+CONFIG_OF_CONTROL=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SARADC_MESON=y
+CONFIG_MMC_MESON_GX=y
+CONFIG_PHY_MESON_GXL=y
+CONFIG_DM_MDIO=y
+CONFIG_DM_MDIO_MUX=y
+CONFIG_ETH_DESIGNWARE_MESON8B=y
+CONFIG_MDIO_MUX_MMIOREG=y
+CONFIG_MESON_GXL_USB_PHY=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_MESON_GXL=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_RESET=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_DEBUG_UART_SKIP_INIT=y
+CONFIG_MESON_SERIAL=y
+CONFIG_SYSINFO=y
+CONFIG_SYSINFO_SMBIOS=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_DWC3=y
+CONFIG_USB_DWC3=y
+# CONFIG_USB_DWC3_GADGET is not set
+CONFIG_USB_DWC3_MESON_GXL=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_VENDOR_NUM=0x1b8e
+CONFIG_USB_GADGET_PRODUCT_NUM=0xfada
+CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_OF_LIBFDT_OVERLAY=y