board: dts: rockchip: Add NanoPi M4B

Add initial support for NanoPi M4B, a minor revision of
the original NanoPi M4.

Commit details of rk3399-nanopi-m4b.dts sync from Linux 5.12-rc4:
"arm64: dts: rockchip: Add NanoPi M4B board"
(sha1: c7b03115003f7f337ab165542cee37148cf30a8a)

Signed-off-by: Alexandre Vicenzi <alexandre.vicenzi@suse.com>
Reviewed-by: Kever Yang <kever.yang@rock-cihps.com>

arch/arm/dts/Makefile

@@ -131,6 +131,7 @@ dtb-$(CONFIG_ROCKCHIP_RK3399) += \
 	rk3399-nanopc-t4.dtb \
 	rk3399-nanopi-m4.dtb \
 	rk3399-nanopi-m4-2gb.dtb \
+	rk3399-nanopi-m4b.dtb \
 	rk3399-nanopi-neo4.dtb \
 	rk3399-nanopi-r4s.dtb \
 	rk3399-orangepi.dtb \

arch/arm/dts/rk3399-nanopi-m4b-u-boot.dtsi

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Alexandre Vicenzi <linux@alxd.me>
+ */
+
+#include "rk3399-nanopi4-u-boot.dtsi"
+#include "rk3399-sdram-ddr3-1866.dtsi"

arch/arm/dts/rk3399-nanopi-m4b.dts

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * FriendlyElec NanoPi M4B board device tree source
+ *
+ * Copyright (c) 2020 Chen-Yu Tsai <wens@csie.org>
+ */
+
+/dts-v1/;
+#include "rk3399-nanopi-m4.dts"
+
+/ {
+	model = "FriendlyElec NanoPi M4B";
+	compatible = "friendlyarm,nanopi-m4b", "rockchip,rk3399";
+
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 1>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1500000>;
+		poll-interval = <100>;
+
+		recovery {
+			label = "Recovery";
+			linux,code = <KEY_VENDOR>;
+			press-threshold-microvolt = <18000>;
+		};
+	};
+};
+
+/* No USB type-C PD power manager */
+/delete-node/ &fusb0;
+
+&i2c4 {
+	status = "disabled";
+};
+
+&u2phy0_host {
+	phy-supply = <&vcc5v0_usb2>;
+};
+
+&u2phy0_otg {
+	phy-supply = <&vbus_typec>;
+};
+
+&u2phy1_otg {
+	phy-supply = <&vcc5v0_usb1>;
+};
+
+&vbus_typec {
+	enable-active-high;
+	gpios = <&gpio4 RK_PD2 GPIO_ACTIVE_HIGH>;
+};

board/rockchip/evb_rk3399/MAINTAINERS

@@ -49,6 +49,12 @@ S:	Maintained
 F:	configs/nanopi-m4-2gb-rk3399_defconfig
 F:	arch/arm/dts/rk3399-nanopi-m4-2gb-u-boot.dtsi
 
+NANOPI-M4B
+M:	Alexandre Vicenzi <linux@alxd.me>
+S:	Maintained
+F:	configs/nanopi-m4b-rk3399_defconfig
+F:	arch/arm/dts/rk3399-nanopi-m4b-u-boot.dtsi
+
 NANOPI-NEO4
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained

configs/nanopi-m4b-rk3399_defconfig

@@ -0,0 +1,61 @@
+CONFIG_ARM=y
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_SYS_TEXT_BASE=0x00200000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_OFFSET=0x3F8000
+CONFIG_ROCKCHIP_RK3399=y
+CONFIG_TARGET_EVB_RK3399=y
+CONFIG_DEBUG_UART_BASE=0xFF1A0000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_DEFAULT_DEVICE_TREE="rk3399-nanopi-m4b"
+CONFIG_DEBUG_UART=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-nanopi-m4b.dtb"
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
+CONFIG_TPL=y
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_TIME=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names 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_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_ROCKCHIP=y
+CONFIG_DM_ETH=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_GMAC_ROCKCHIP=y
+CONFIG_PMIC_RK8XX=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_REGULATOR_RK8XX=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYSRESET=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_DWC3=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_KEYBOARD=y
+CONFIG_USB_HOST_ETHER=y
+CONFIG_USB_ETHER_ASIX=y
+CONFIG_USB_ETHER_ASIX88179=y
+CONFIG_USB_ETHER_MCS7830=y
+CONFIG_USB_ETHER_RTL8152=y
+CONFIG_USB_ETHER_SMSC95XX=y
+CONFIG_DM_VIDEO=y
+CONFIG_DISPLAY=y
+CONFIG_VIDEO_ROCKCHIP=y
+CONFIG_DISPLAY_ROCKCHIP_HDMI=y
+CONFIG_SPL_TINY_MEMSET=y
+CONFIG_ERRNO_STR=y

doc/board/rockchip/rockchip.rst

@@ -61,6 +61,7 @@ List of mainline supported rockchip boards:
      - Firefly ROC-RK3399-PC
      - FriendlyElec NanoPC-T4 (nanopc-t4-rk3399)
      - FriendlyElec NanoPi M4 (nanopi-m4-rk3399)
+     - FriendlyElec NanoPi M4B (nanopi-m4b-rk3399)
      - FriendlyARM NanoPi NEO4 (nanopi-neo4-rk3399)
      - Google Bob (chromebook_bob)
      - Khadas Edge (khadas-edge-rk3399)