[PATCH] board: rockchip: Add FriendlyElec NanoPi Zero2

[Christopher Obbard]

Hi Jonas,

On Sat, 2026-01-10 at 20:53 +0000, Jonas Karlman wrote:
> The NanoPi Zero2 is a small single board computer developed by
> FriendlyElec, based on the Rockchip RK3528A SoC.
> 
> Add support for the FriendlyElec NanoPi Zero2 board.
> 
> Features tested on a FriendlyElec NanoPi Zero2 2407:
> - SD-card boot
> - eMMC boot
> - Ethernet
> - USB host
> 
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>

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

> ---
>  arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi | 11 ++++
>  arch/arm/mach-rockchip/rk3528/MAINTAINERS    |  6 ++
>  configs/nanopi-zero2-rk3528_defconfig        | 64 ++++++++++++++++++++
>  doc/board/rockchip/rockchip.rst              |  1 +
>  4 files changed, 82 insertions(+)
>  create mode 100644 arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
>  create mode 100644 configs/nanopi-zero2-rk3528_defconfig
> 
> diff --git a/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi b/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
> new file mode 100644
> index 000000000000..3e2fbd81da17
> --- /dev/null
> +++ b/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
> @@ -0,0 +1,11 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3528-u-boot.dtsi"
> +
> +&vdd_arm {
> +	regulator-init-microvolt = <953000>;
> +};
> +
> +&vdd_logic {
> +	regulator-init-microvolt = <900000>;
> +};
> diff --git a/arch/arm/mach-rockchip/rk3528/MAINTAINERS b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> index ee840396e8b0..111fe0270dfd 100644
> --- a/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> +++ b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> @@ -4,6 +4,12 @@ S:	Maintained
>  F:	arch/arm/dts/rk3528-generic*
>  F:	configs/generic-rk3528_defconfig
>  
> +NANOPI-ZERO2-RK3528
> +M:	Jonas Karlman <jonas at kwiboo.se>
> +S:	Maintained
> +F:	arch/arm/dts/rk3528-nanopi-zero2*
> +F:	configs/nanopi-zero2-rk3528_defconfig
> +
>  RADXA-E20C
>  M:	Jonas Karlman <jonas at kwiboo.se>
>  S:	Maintained
> diff --git a/configs/nanopi-zero2-rk3528_defconfig b/configs/nanopi-zero2-rk3528_defconfig
> new file mode 100644
> index 000000000000..2e54c0ff20a2
> --- /dev/null
> +++ b/configs/nanopi-zero2-rk3528_defconfig
> @@ -0,0 +1,64 @@
> +CONFIG_ARM=y
> +CONFIG_SKIP_LOWLEVEL_INIT=y
> +CONFIG_COUNTER_FREQUENCY=24000000
> +CONFIG_ARCH_ROCKCHIP=y
> +CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-nanopi-zero2"
> +CONFIG_ROCKCHIP_RK3528=y
> +CONFIG_SYS_LOAD_ADDR=0xc00800
> +CONFIG_DEBUG_UART_BASE=0xFF9F0000
> +CONFIG_DEBUG_UART_CLOCK=24000000
> +CONFIG_DEBUG_UART=y
> +CONFIG_DEFAULT_FDT_FILE="rockchip/rk3528-nanopi-zero2.dtb"
> +# CONFIG_DISPLAY_CPUINFO is not set
> +CONFIG_BOARD_RNG_SEED=y
> +CONFIG_SPL_MAX_SIZE=0x40000
> +# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
> +CONFIG_CMD_MEMINFO=y
> +CONFIG_CMD_MEMINFO_MAP=y
> +CONFIG_CMD_ADC=y
> +CONFIG_CMD_GPIO=y
> +CONFIG_CMD_GPT=y
> +CONFIG_CMD_MISC=y
> +CONFIG_CMD_MMC=y
> +CONFIG_CMD_USB=y
> +CONFIG_CMD_ROCKUSB=y
> +CONFIG_CMD_USB_MASS_STORAGE=y
> +# CONFIG_CMD_SETEXPR is not set
> +CONFIG_CMD_RNG=y
> +CONFIG_CMD_REGULATOR=y
> +# CONFIG_SPL_DOS_PARTITION is not set
> +CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
> +CONFIG_BUTTON=y
> +CONFIG_BUTTON_ADC=y
> +# CONFIG_USB_FUNCTION_FASTBOOT is not set
> +CONFIG_ROCKCHIP_GPIO=y
> +CONFIG_LED=y
> +CONFIG_LED_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_PHY_REALTEK=y
> +CONFIG_DM_MDIO=y
> +CONFIG_DWC_ETH_QOS=y
> +CONFIG_DWC_ETH_QOS_ROCKCHIP=y
> +CONFIG_PHY_ROCKCHIP_INNO_USB2=y
> +CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
> +CONFIG_REGULATOR_PWM=y
> +CONFIG_DM_REGULATOR_GPIO=y
> +CONFIG_PWM_ROCKCHIP=y
> +CONFIG_BAUDRATE=1500000
> +CONFIG_DEBUG_UART_SHIFT=2
> +CONFIG_SYS_NS16550_MEM32=y
> +CONFIG_USB=y
> +CONFIG_USB_XHCI_HCD=y
> +CONFIG_USB_EHCI_HCD=y
> +CONFIG_USB_EHCI_GENERIC=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 c1683bfe4212..01659ecc3cbe 100644
> --- a/doc/board/rockchip/rockchip.rst
> +++ b/doc/board/rockchip/rockchip.rst
> @@ -101,6 +101,7 @@ List of mainline supported Rockchip boards:
>  
>  * rk3528
>       - ArmSoM Sige1 (sige1-rk3528)
> +     - FriendlyElec NanoPi Zero2 (nanopi-zero2-rk3528)
>       - Generic RK3528 (generic-rk3528)
>       - Radxa E20C (radxa-e20c-rk3528)
>       - Radxa ROCK 2A/2F (rock-2-rk3528)