[PATCH 2/4] board: rockchip: Add Radxa ROCK 2A/2F
Kever Yang
kever.yang at rock-chips.com
Sun Oct 26 16:41:56 CET 2025
On 2025/10/20 04:58, Jonas Karlman wrote:
> The ROCK 2 Family is a high-performance SBC (Single Board Computer)
> developed by Radxa, based on the Rockchip RK3528A.
>
> The Radxa E20C shares some board characteristics with the ROCK 2 family
> boards.
>
> Add support for the ROCK 2A and 2F boards. The radxa-e20c-rk3528 target
> is also extended to support booting ROCK 2 boards.
>
> Features tested on a ROCK 2A v1.202:
> - SD-card boot
> - Ethernet
> - USB host (with pending DT changes)
>
> Features tested on a ROCK 2F v1.016:
> - SD-card boot
> - eMMC boot
> - USB host (with pending DT changes)
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
Thanks,
- Kever
> ---
> arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi | 5 ++
> arch/arm/dts/rk3528-rock-2-u-boot.dtsi | 16 +++++
> arch/arm/dts/rk3528-rock-2a-u-boot.dtsi | 3 +
> arch/arm/dts/rk3528-rock-2f-u-boot.dtsi | 3 +
> arch/arm/mach-rockchip/rk3528/Kconfig | 7 +++
> board/radxa/rock-2-rk3528/Kconfig | 14 +++++
> board/radxa/rock-2-rk3528/MAINTAINERS | 6 ++
> board/radxa/rock-2-rk3528/Makefile | 3 +
> board/radxa/rock-2-rk3528/rock-2-rk3528.c | 60 +++++++++++++++++++
> configs/radxa-e20c-rk3528_defconfig | 3 +
> configs/rock-2-rk3528_defconfig | 68 ++++++++++++++++++++++
> doc/board/rockchip/rockchip.rst | 1 +
> 12 files changed, 189 insertions(+)
> create mode 100644 arch/arm/dts/rk3528-rock-2-u-boot.dtsi
> create mode 100644 arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
> create mode 100644 arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
> create mode 100644 board/radxa/rock-2-rk3528/Kconfig
> create mode 100644 board/radxa/rock-2-rk3528/MAINTAINERS
> create mode 100644 board/radxa/rock-2-rk3528/Makefile
> create mode 100644 board/radxa/rock-2-rk3528/rock-2-rk3528.c
> create mode 100644 configs/rock-2-rk3528_defconfig
>
> diff --git a/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
> index 3e2fbd81da17..e8c8dc2f0324 100644
> --- a/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
> +++ b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
> @@ -2,6 +2,11 @@
>
> #include "rk3528-u-boot.dtsi"
>
> +&saradc {
> + bootph-pre-ram;
> + vdd-microvolts = <1800000>;
> +};
> +
> &vdd_arm {
> regulator-init-microvolt = <953000>;
> };
> diff --git a/arch/arm/dts/rk3528-rock-2-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2-u-boot.dtsi
> new file mode 100644
> index 000000000000..e8c8dc2f0324
> --- /dev/null
> +++ b/arch/arm/dts/rk3528-rock-2-u-boot.dtsi
> @@ -0,0 +1,16 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3528-u-boot.dtsi"
> +
> +&saradc {
> + bootph-pre-ram;
> + vdd-microvolts = <1800000>;
> +};
> +
> +&vdd_arm {
> + regulator-init-microvolt = <953000>;
> +};
> +
> +&vdd_logic {
> + regulator-init-microvolt = <900000>;
> +};
> diff --git a/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
> new file mode 100644
> index 000000000000..bd35ef882983
> --- /dev/null
> +++ b/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
> @@ -0,0 +1,3 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3528-rock-2-u-boot.dtsi"
> diff --git a/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
> new file mode 100644
> index 000000000000..bd35ef882983
> --- /dev/null
> +++ b/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
> @@ -0,0 +1,3 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3528-rock-2-u-boot.dtsi"
> diff --git a/arch/arm/mach-rockchip/rk3528/Kconfig b/arch/arm/mach-rockchip/rk3528/Kconfig
> index 993b2dd274ea..480ac2942ff7 100644
> --- a/arch/arm/mach-rockchip/rk3528/Kconfig
> +++ b/arch/arm/mach-rockchip/rk3528/Kconfig
> @@ -1,5 +1,10 @@
> if ROCKCHIP_RK3528
>
> +config TARGET_RADXA_ROCK_2_RK3528
> + bool "Radxa ROCK 2A/2F"
> + help
> + Radxa ROCK 2A/2F single board computers with a RK3528A SoC.
> +
> config ROCKCHIP_BOOT_MODE_REG
> default 0xff370200
>
> @@ -9,6 +14,8 @@ config ROCKCHIP_STIMER_BASE
> config SYS_SOC
> default "rk3528"
>
> +source "board/radxa/rock-2-rk3528/Kconfig"
> +
> config SYS_CONFIG_NAME
> default "rk3528_common"
>
> diff --git a/board/radxa/rock-2-rk3528/Kconfig b/board/radxa/rock-2-rk3528/Kconfig
> new file mode 100644
> index 000000000000..5f1ad10c0edf
> --- /dev/null
> +++ b/board/radxa/rock-2-rk3528/Kconfig
> @@ -0,0 +1,14 @@
> +if TARGET_RADXA_ROCK_2_RK3528
> +
> +config SYS_BOARD
> + default "rock-2-rk3528"
> +
> +config SYS_VENDOR
> + default "radxa"
> +
> +config BOARD_SPECIFIC_OPTIONS # dummy
> + def_bool y
> + select ADC
> + select SPL_ADC
> +
> +endif
> diff --git a/board/radxa/rock-2-rk3528/MAINTAINERS b/board/radxa/rock-2-rk3528/MAINTAINERS
> new file mode 100644
> index 000000000000..841bd28450f7
> --- /dev/null
> +++ b/board/radxa/rock-2-rk3528/MAINTAINERS
> @@ -0,0 +1,6 @@
> +RADXA-ROCK-2-RK3528
> +M: Jonas Karlman <jonas at kwiboo.se>
> +S: Maintained
> +F: board/radxa/rock-2-rk3528
> +F: configs/rock-2-rk3528_defconfig
> +F: arch/arm/dts/rk3528-rock-2*
> diff --git a/board/radxa/rock-2-rk3528/Makefile b/board/radxa/rock-2-rk3528/Makefile
> new file mode 100644
> index 000000000000..b3e0ad0b5408
> --- /dev/null
> +++ b/board/radxa/rock-2-rk3528/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +
> +obj-y += rock-2-rk3528.o
> diff --git a/board/radxa/rock-2-rk3528/rock-2-rk3528.c b/board/radxa/rock-2-rk3528/rock-2-rk3528.c
> new file mode 100644
> index 000000000000..2d265b67f0df
> --- /dev/null
> +++ b/board/radxa/rock-2-rk3528/rock-2-rk3528.c
> @@ -0,0 +1,60 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +
> +#include <linux/errno.h>
> +#include <linux/kernel.h>
> +#include <adc.h>
> +#include <env.h>
> +
> +#define HW_ID_CHANNEL 2
> +
> +struct board_model {
> + unsigned int low;
> + unsigned int high;
> + const char *fdtfile;
> +};
> +
> +static const struct board_model board_models[] = {
> + { 63, 278, "rockchip/rk3528-rock-2a.dtb" },
> + { 291, 392, "rockchip/rk3528-radxa-e20c.dtb" },
> + { 519, 733, "rockchip/rk3528-rock-2f.dtb" },
> +};
> +
> +static const struct board_model *get_board_model(void)
> +{
> + unsigned int val;
> + int i, ret;
> +
> + ret = adc_channel_single_shot("adc at ffae0000", HW_ID_CHANNEL, &val);
> + if (ret)
> + return NULL;
> +
> + for (i = 0; i < ARRAY_SIZE(board_models); i++) {
> + unsigned int min = board_models[i].low;
> + unsigned int max = board_models[i].high;
> +
> + if (min <= val && val <= max)
> + return &board_models[i];
> + }
> +
> + return NULL;
> +}
> +
> +int rk_board_late_init(void)
> +{
> + const struct board_model *model = get_board_model();
> +
> + if (model)
> + env_set("fdtfile", model->fdtfile);
> +
> + return 0;
> +}
> +
> +int board_fit_config_name_match(const char *name)
> +{
> + const struct board_model *model = get_board_model();
> +
> + if (model && !strcmp(name, model->fdtfile))
> + return 0;
> +
> + return -EINVAL;
> +}
> diff --git a/configs/radxa-e20c-rk3528_defconfig b/configs/radxa-e20c-rk3528_defconfig
> index 0941d1b9be81..fa20424ee7b2 100644
> --- a/configs/radxa-e20c-rk3528_defconfig
> +++ b/configs/radxa-e20c-rk3528_defconfig
> @@ -4,12 +4,14 @@ CONFIG_COUNTER_FREQUENCY=24000000
> CONFIG_ARCH_ROCKCHIP=y
> CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-radxa-e20c"
> CONFIG_ROCKCHIP_RK3528=y
> +CONFIG_TARGET_RADXA_ROCK_2_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-radxa-e20c.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
> @@ -26,6 +28,7 @@ CONFIG_CMD_USB_MASS_STORAGE=y
> CONFIG_CMD_RNG=y
> CONFIG_CMD_REGULATOR=y
> # CONFIG_SPL_DOS_PARTITION is not set
> +CONFIG_OF_LIST="rockchip/rk3528-radxa-e20c rockchip/rk3528-rock-2a rockchip/rk3528-rock-2f"
> CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
> CONFIG_BUTTON=y
> CONFIG_BUTTON_ADC=y
> diff --git a/configs/rock-2-rk3528_defconfig b/configs/rock-2-rk3528_defconfig
> new file mode 100644
> index 000000000000..b9261de460b8
> --- /dev/null
> +++ b/configs/rock-2-rk3528_defconfig
> @@ -0,0 +1,68 @@
> +CONFIG_ARM=y
> +CONFIG_SKIP_LOWLEVEL_INIT=y
> +CONFIG_COUNTER_FREQUENCY=24000000
> +CONFIG_ARCH_ROCKCHIP=y
> +CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-rock-2a"
> +CONFIG_ROCKCHIP_RK3528=y
> +CONFIG_TARGET_RADXA_ROCK_2_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-rock-2a.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_LIST="rockchip/rk3528-rock-2a rockchip/rk3528-rock-2f rockchip/rk3528-radxa-e20c"
> +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_BUTTON_GPIO=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_MOTORCOMM=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 542cbc88f57e..918ba9d24b52 100644
> --- a/doc/board/rockchip/rockchip.rst
> +++ b/doc/board/rockchip/rockchip.rst
> @@ -102,6 +102,7 @@ List of mainline supported Rockchip boards:
> * rk3528
> - Generic RK3528 (generic-rk3528)
> - Radxa E20C (radxa-e20c-rk3528)
> + - Radxa ROCK 2A/2F (rock-2-rk3528)
>
> * rk3566
> - Anbernic RGxx3 (anbernic-rgxx3-rk3566)
--
Thanks & Best regards,
Kever Yang
**************************************************************************************************
杨凯 市场部 Kever Yang Marketing Department
瑞芯微电子股份有限公司 Rockchip Electronics Co.，Ltd。
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