rockchip: rk3399: Add Nanopi M4 board support

Add initial support for Nanopi M4 board.

Specification
- Rockchip RK3399
- Dual-Channel 4GB LPDDR3-1866
- SD card slot
- eMMC socket
- RTL8211E 1Gbps
- AP6356S WiFI/BT
- HDMI In/Out, DP, MIPI DSI/CSI
- USB 3.0 x4
- USB Type C power and data
- GPIO1, GPIO2 expansion ports
- DC5V/3A

Commit details of rk3399-nanopi-m4.dts sync from Linux 5.1-rc2:
"arm64: dts: rockchip: Refine nanopi4 differences"
(sha1: c62ffaf5026d0b7633e62b2cea8450b5543c349a)

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

6 files changed, 141 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index b76e0ba726..c77e7631d0 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -106,6 +106,7 @@ dtb-$(CONFIG_ROCKCHIP_RK3399) += \
 	rk3399-ficus.dtb \
 	rk3399-firefly.dtb \
 	rk3399-gru-bob.dtb \
+	rk3399-nanopi-m4.dtb \
 	rk3399-orangepi.dtb \
 	rk3399-puma-ddr1333.dtb \
 	rk3399-puma-ddr1600.dtb \
diff --git a/arch/arm/dts/rk3399-nanopi-m4-u-boot.dtsi b/arch/arm/dts/rk3399-nanopi-m4-u-boot.dtsi
new file mode 100644
index 0000000000..17201bcf41
--- /dev/null
+++ b/arch/arm/dts/rk3399-nanopi-m4-u-boot.dtsi
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include "rk3399-nanopi4-u-boot.dtsi"
+#include "rk3399-sdram-lpddr3-samsung-4GB-1866.dtsi"
diff --git a/arch/arm/dts/rk3399-nanopi-m4.dts b/arch/arm/dts/rk3399-nanopi-m4.dts
new file mode 100644
index 0000000000..60358ab8c7
--- /dev/null
+++ b/arch/arm/dts/rk3399-nanopi-m4.dts
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * FriendlyElec NanoPi M4 board device tree source
+ *
+ * Copyright (c) 2018 FriendlyElec Computer Tech. Co., Ltd.
+ * (http://www.friendlyarm.com)
+ *
+ * Copyright (c) 2018 Collabora Ltd.
+ * Copyright (c) 2019 Arm Ltd.
+ */
+
+/dts-v1/;
+#include "rk3399-nanopi4.dtsi"
+
+/ {
+	model = "FriendlyElec NanoPi M4";
+	compatible = "friendlyarm,nanopi-m4", "rockchip,rk3399";
+
+	vdd_5v: vdd-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_5v";
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vcc5v0_core: vcc5v0-core {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_core";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vdd_5v>;
+	};
+
+	vcc5v0_usb1: vcc5v0-usb1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_usb1";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc5v0_usb2: vcc5v0-usb2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_usb2";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc5v0_sys>;
+	};
+};
+
+&vcc3v3_sys {
+	vin-supply = <&vcc5v0_core>;
+};
+
+&u2phy0_host {
+	phy-supply = <&vcc5v0_usb1>;
+};
+
+&u2phy1_host {
+	phy-supply = <&vcc5v0_usb2>;
+};
+
+&vbus_typec {
+	regulator-always-on;
+	vin-supply = <&vdd_5v>;
+};
diff --git a/arch/arm/dts/rk3399-nanopi4-u-boot.dtsi b/arch/arm/dts/rk3399-nanopi4-u-boot.dtsi
index bb8bdf08c5..a126bbaf08 100644
--- a/arch/arm/dts/rk3399-nanopi4-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-nanopi4-u-boot.dtsi
@@ -3,6 +3,8 @@
  * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
  */
 
+#include "rk3399-u-boot.dtsi"
+
 &sdmmc {
 	pinctrl-0 = <&sdmmc_bus4 &sdmmc_clk &sdmmc_cmd &sdmmc_cd>;
 };
diff --git a/board/rockchip/evb_rk3399/MAINTAINERS b/board/rockchip/evb_rk3399/MAINTAINERS
index 07ee8ce92c..ae43805a6a 100644
--- a/board/rockchip/evb_rk3399/MAINTAINERS
+++ b/board/rockchip/evb_rk3399/MAINTAINERS
@@ -6,6 +6,12 @@ F:      include/configs/evb_rk3399.h
 F:      configs/evb-rk3399_defconfig
 F:      configs/firefly-rk3399_defconfig
 
+NANOPI-M4
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	configs/nanopi-m4-rk3399_defconfig
+F:	arch/arm/dts/rk3399-nanopi-m4-u-boot.dtsi
+
 ORANGEPI-RK3399
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained
diff --git a/configs/nanopi-m4-rk3399_defconfig b/configs/nanopi-m4-rk3399_defconfig
new file mode 100644
index 0000000000..c2832788f0
--- /dev/null
+++ b/configs/nanopi-m4-rk3399_defconfig
@@ -0,0 +1,59 @@
+CONFIG_ARM=y
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_SYS_TEXT_BASE=0x00200000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_ROCKCHIP_RK3399=y
+CONFIG_ROCKCHIP_SPL_RESERVE_IRAM=0x4000
+CONFIG_DEBUG_UART_BASE=0xFF1A0000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SPL_STACK_R_ADDR=0x80000
+CONFIG_DEBUG_UART=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-nanopi-m4.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_SPL_TEXT_BASE=0xff8c2000
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x4000
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_TIME=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_DEFAULT_DEVICE_TREE="rk3399-nanopi-m4"
+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_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_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_USE_TINY_PRINTF=y
+CONFIG_ERRNO_STR=y