[PATCH v2 2/2] board: rockchip: Add minimal generic RK3399 board

Christopher Obbard christopher.obbard at linaro.org
Sun Mar 30 19:54:35 CEST 2025


Hi Jonas,

On Sun, 30 Mar 2025 at 18:21, Jonas Karlman <jonas at kwiboo.se> wrote:
>
> 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 at kwiboo.se>

Reviewed-by: Christopher Obbard <christopher.obbard at linaro.org>

> ---
> v2: Add CONFIG_ROCKCHIP_IODOMAIN is not set
> ---
>  arch/arm/dts/rk3399-generic-u-boot.dtsi | 10 +++
>  arch/arm/dts/rk3399-generic.dts         | 83 +++++++++++++++++++++++++
>  board/rockchip/evb_rk3399/MAINTAINERS   |  6 ++
>  configs/generic-rk3399_defconfig        | 77 +++++++++++++++++++++++
>  doc/board/rockchip/rockchip.rst         |  1 +
>  5 files changed, 177 insertions(+)
>  create mode 100644 arch/arm/dts/rk3399-generic-u-boot.dtsi
>  create mode 100644 arch/arm/dts/rk3399-generic.dts
>  create mode 100644 configs/generic-rk3399_defconfig
>
> diff --git a/arch/arm/dts/rk3399-generic-u-boot.dtsi b/arch/arm/dts/rk3399-generic-u-boot.dtsi
> new file mode 100644
> index 000000000000..d977b642f8d7
> --- /dev/null
> +++ b/arch/arm/dts/rk3399-generic-u-boot.dtsi
> @@ -0,0 +1,10 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3399-u-boot.dtsi"
> +
> +&spi1 {
> +       flash at 0 {
> +               bootph-pre-ram;
> +               bootph-some-ram;
> +       };
> +};
> diff --git a/arch/arm/dts/rk3399-generic.dts b/arch/arm/dts/rk3399-generic.dts
> new file mode 100644
> index 000000000000..c698f59c565d
> --- /dev/null
> +++ b/arch/arm/dts/rk3399-generic.dts
> @@ -0,0 +1,83 @@
> +// 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 at 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";
> +};
> diff --git a/board/rockchip/evb_rk3399/MAINTAINERS b/board/rockchip/evb_rk3399/MAINTAINERS
> index 8dab3fa70f56..8319db2e976c 100644
> --- a/board/rockchip/evb_rk3399/MAINTAINERS
> +++ b/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 at kwiboo.se>
> +S:     Maintained
> +F:     configs/generic-rk3399_defconfig
> +F:     arch/arm/dts/rk3399-generic*
> +
>  KHADAS-EDGE
>  M:     Nick Xie <nick at khadas.com>
>  S:     Maintained
> diff --git a/configs/generic-rk3399_defconfig b/configs/generic-rk3399_defconfig
> new file mode 100644
> index 000000000000..3abe65bcd68a
> --- /dev/null
> +++ b/configs/generic-rk3399_defconfig
> @@ -0,0 +1,77 @@
> +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_ROCKCHIP_IODOMAIN is not set
> +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
> diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
> index 6b48187ba79d..5a029afae305 100644
> --- a/doc/board/rockchip/rockchip.rst
> +++ b/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)
> --
> 2.49.0
>


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