Hi Yao Zi, On 10/19/2025 7:26 AM, Yao Zi wrote: > FriendlElec NanoPi Zero2 is a super-tiny development board based on > RK3528A SoC. Add board-level configuration and U-Boot-specific > devicetree piece for it. > > Signed-off-by: Yao Zi <[email protected]> > --- > arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi | 11 +++++ > arch/arm/mach-rockchip/rk3528/MAINTAINERS | 6 +++ > configs/nanopi-zero2_defconfig | 46 ++++++++++++++++++++ > doc/board/rockchip/rockchip.rst | 1 + > 4 files changed, 64 insertions(+) > create mode 100644 arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi > create mode 100644 configs/nanopi-zero2_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 00000000000..3f65d2e1ff1 > --- /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 = <901000>; > +}; > diff --git a/arch/arm/mach-rockchip/rk3528/MAINTAINERS > b/arch/arm/mach-rockchip/rk3528/MAINTAINERS > index f343f71cf7f..853480a58ce 100644 > --- a/arch/arm/mach-rockchip/rk3528/MAINTAINERS > +++ b/arch/arm/mach-rockchip/rk3528/MAINTAINERS > @@ -9,3 +9,9 @@ M: Jonas Karlman <[email protected]> > S: Maintained > F: arch/arm/dts/rk3528-radxa-e20c* > F: configs/radxa-e20c-rk3528_defconfig > + > +NANOPI-ZERO2 > +M: Yao Zi <[email protected]>
Feel free to also add me as a maintainer (or reviewer): M: Jonas Karlman <[email protected]> > +S: Maintained > +F: arch/arm/dts/rk3528-nanopi-zero2* > +F: configs/nanopi-zero2_defconfig The defconfig should be named nanopi-zero2-rk3528_defconfig to match the Rockchip board defconfig naming scheme. > diff --git a/configs/nanopi-zero2_defconfig b/configs/nanopi-zero2_defconfig > new file mode 100644 > index 00000000000..af14589568c > --- /dev/null > +++ b/configs/nanopi-zero2_defconfig As mentioned above, please name this nanopi-zero2-rk3528_defconfig. > @@ -0,0 +1,46 @@ > +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_BOOTMETH_VBE is not set There should be no need to drop this, I only drop it in generic Rockchip defconfig because it that defconfig is supposed to be as minimal and generic as possible. > +CONFIG_DEFAULT_FDT_FILE="rockchip/rk3528-nanopi-zero2.dtb" > +# CONFIG_DISPLAY_CPUINFO is not set Please add following to seed random generator for linux. 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 Please add following to add the adc command: CONFIG_CMD_ADC=y > +CONFIG_CMD_GPIO=y > +CONFIG_CMD_GPT=y > +CONFIG_CMD_MISC=y > +CONFIG_CMD_MMC=y Please add following USB commands to future proof: CONFIG_CMD_USB=y CONFIG_CMD_ROCKUSB=y CONFIG_CMD_USB_MASS_STORAGE=y > +# CONFIG_CMD_SETEXPR is not set > +CONFIG_CMD_RNG=y Please add following to enable regulator debug: 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 Please add following to simplify addition of USB related Kconfig options: # 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 Please add following: CONFIG_DM_MDIO=y > +CONFIG_DWC_ETH_QOS=y > +CONFIG_DWC_ETH_QOS_ROCKCHIP=y > +CONFIG_PHY_ROCKCHIP_INNO_USB2=y Please add following to prepare for USB3/PCIe: CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y Please add following to actually enable support for initializing the two pwm-regulators on this board. 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 Please add following to prepare for future USB support: 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 de3aa79cb5c..b2b7de4e43a 100644 > --- a/doc/board/rockchip/rockchip.rst > +++ b/doc/board/rockchip/rockchip.rst > @@ -100,6 +100,7 @@ List of mainline supported Rockchip boards: > - Theobroma Systems RK3399-Q7 SoM - Puma (puma_rk3399) > > * rk3528 > + - FriendlyElec NanoPi Zero2 (nanopi-zero2) Please update to include the rk3528 suffix after the defconfig name. > - Generic RK3528 (generic-rk3528) > - Radxa E20C (radxa-e20c-rk3528) > With above adjustments this closely matches the defconfig I have been carrying in my rk3528 branch at [1] a few months. So with above fixed this is: Reviewed-by: Jonas Karlman <[email protected]> [1] https://source.denx.de/u-boot/contributors/kwiboo/u-boot/-/commits/rk3528 I plan to send out a series with the ROCK-2 and Sige1 board additions shortly. Regards, Jonas
