board: rockchip: Add minimal generic RK3399 board

Add a minimal generic RK3399 board that only have eMMC, SDMMC, SPI flash
and USB OTG enabled. This defconfig can be used to boot from eMMC,
SD-card or SPI flash on most RK3399 boards that follow reference board
design.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>

arch/arm/dts/rk3399-generic-u-boot.dtsi

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3399-u-boot.dtsi"
+
+&spi1 {
+	flash@0 {
+		bootph-pre-ram;
+		bootph-some-ram;
+	};
+};

arch/arm/dts/rk3399-generic.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3399 with eMMC, SD-card, SPI flash and USB OTG enabled
+ */
+
+/dts-v1/;
+#include "rk3399.dtsi"
+
+/ {
+	model = "Generic RK3399";
+	compatible = "rockchip,rk3399";
+
+	aliases {
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+};
+
+&emmc_phy {
+	status = "okay";
+};
+
+&sdhci {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	max-frequency = <150000000>;
+	mmc-hs200-1_8v;
+	mmc-ddr-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	max-frequency = <150000000>;
+	no-mmc;
+	no-sdio;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc_bus4 &sdmmc_clk &sdmmc_cmd &sdmmc_cd>;
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};
+
+&u2phy0 {
+	status = "okay";
+};
+
+&u2phy0_otg {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usbdrd3_0 {
+	status = "okay";
+};
+
+&usbdrd_dwc3_0 {
+	dr_mode = "peripheral";
+	maximum-speed = "high-speed";
+	phys = <&u2phy0_otg>;
+	phy-names = "usb2-phy";
+	status = "okay";
+};

board/rockchip/evb_rk3399/MAINTAINERS

@@ -14,6 +14,12 @@ S:      Maintained
 F:	configs/eaidk-610-rk3399_defconfig
 F:	arch/arm/dts/rk3399-eaidk-610*
 
+GENERIC-RK3399
+M:	Jonas Karlman <jonas@kwiboo.se>
+S:	Maintained
+F:	configs/generic-rk3399_defconfig
+F:	arch/arm/dts/rk3399-generic*
+
 KHADAS-EDGE
 M:	Nick Xie <nick@khadas.com>
 S:	Maintained

configs/generic-rk3399_defconfig

+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SF_DEFAULT_SPEED=25000000
+CONFIG_DEFAULT_DEVICE_TREE="rk3399-generic"
+CONFIG_DM_RESET=y
+CONFIG_ROCKCHIP_RK3399=y
+CONFIG_ROCKCHIP_EXTERNAL_TPL=y
+CONFIG_ROCKCHIP_SPI_IMAGE=y
+CONFIG_TARGET_EVB_RK3399=y
+CONFIG_SYS_LOAD_ADDR=0x800800
+CONFIG_SF_DEFAULT_BUS=1
+CONFIG_DEBUG_UART_BASE=0xFF1A0000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
+CONFIG_SPL_SPI=y
+CONFIG_DEBUG_UART=y
+CONFIG_FIT_VERBOSE=y
+# CONFIG_BOOTMETH_VBE is not set
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-generic.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_SPL_MAX_SIZE=0x40000
+CONFIG_SPL_PAD_TO=0x7f8000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_SPL_SPI_LOAD=y
+CONFIG_SYS_SPI_U_BOOT_OFFS=0xE0000
+CONFIG_SPL_ATF_NO_PLATFORM_PARAM=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_MEMINFO_MAP=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MISC=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_ROCKUSB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_RNG=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+# CONFIG_OF_UPSTREAM is not set
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_NO_NET=y
+# CONFIG_ADC is not set
+# CONFIG_USB_FUNCTION_FASTBOOT is not set
+CONFIG_ROCKCHIP_GPIO=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_SPI_FLASH_SFDP_SUPPORT=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SILICONKAISER=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_XTX=y
+CONFIG_SPI_FLASH_ZBIT=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_ROCKCHIP_SPI=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_USB=y
+CONFIG_USB_DWC3=y
+CONFIG_USB_DWC3_GENERIC=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_USB_FUNCTION_ROCKUSB=y
+CONFIG_ERRNO_STR=y

doc/board/rockchip/rockchip.rst

@@ -84,6 +84,7 @@ List of mainline supported Rockchip boards:
      - FriendlyElec NanoPi M4 (nanopi-m4-rk3399)
      - FriendlyElec NanoPi M4B (nanopi-m4b-rk3399)
      - FriendlyARM NanoPi NEO4 (nanopi-neo4-rk3399)
+     - Generic RK3399 (generic-rk3399)
      - Google Bob (chromebook_bob)
      - Google Kevin (chromebook_kevin)
      - Khadas Edge (khadas-edge-rk3399)