[PATCH v2 30/30] board: rockchip: Add Radxa E20C

[Kever Yang]

On 2025/4/8 06:47, Jonas Karlman wrote:
> The Radxa E20C is an ultra-compact network computer with a RK3528A SoC
> that offers a wide range of networking capabilities.
>
> Features tested on a Radxa E20C v1.104:
> - SD-card boot
> - eMMC boot
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
> Changes in v2:
> - Drop sdhci from board u-boot.dtsi
> - Update sdmmc node to latest mainline Linux patch
> - Enable options for DT nodes added to dts/upstream DT
>
> This also enables options for GMAC, PWM-regulators and USB 2.0. Features
> that have been tested but are currently missing the necessary DT nodes.
> ---
>   arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi | 12 +++++
>   arch/arm/mach-rockchip/rk3528/MAINTAINERS  |  6 +++
>   configs/radxa-e20c-rk3528_defconfig        | 56 ++++++++++++++++++++++
>   doc/board/rockchip/rockchip.rst            |  1 +
>   4 files changed, 75 insertions(+)
>   create mode 100644 arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
>   create mode 100644 configs/radxa-e20c-rk3528_defconfig
>
> diff --git a/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
> new file mode 100644
> index 000000000000..9c2f03a786cf
> --- /dev/null
> +++ b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
> @@ -0,0 +1,12 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3528-u-boot.dtsi"
> +
> +&sdmmc {
> +	bus-width = <4>;
> +	cap-mmc-highspeed;
> +	cap-sd-highspeed;
> +	disable-wp;
> +	vmmc-supply = <&vcc_3v3>;
> +	status = "okay";
> +};
> diff --git a/arch/arm/mach-rockchip/rk3528/MAINTAINERS b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> index cfdc92d770c1..f343f71cf7f6 100644
> --- a/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> +++ b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
> @@ -3,3 +3,9 @@ M:	Jonas Karlman <jonas at kwiboo.se>
>   S:	Maintained
>   F:	arch/arm/dts/rk3528-generic*
>   F:	configs/generic-rk3528_defconfig
> +
> +RADXA-E20C
> +M:	Jonas Karlman <jonas at kwiboo.se>
> +S:	Maintained
> +F:	arch/arm/dts/rk3528-radxa-e20c*
> +F:	configs/radxa-e20c-rk3528_defconfig
> diff --git a/configs/radxa-e20c-rk3528_defconfig b/configs/radxa-e20c-rk3528_defconfig
> new file mode 100644
> index 000000000000..08f3a13af3b2
> --- /dev/null
> +++ b/configs/radxa-e20c-rk3528_defconfig
> @@ -0,0 +1,56 @@
> +CONFIG_ARM=y
> +CONFIG_SKIP_LOWLEVEL_INIT=y
> +CONFIG_COUNTER_FREQUENCY=24000000
> +CONFIG_ARCH_ROCKCHIP=y
> +CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-radxa-e20c"
> +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-radxa-e20c.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_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_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_BUTTON_GPIO=y
> +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_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_EHCI_HCD=y
> +CONFIG_USB_EHCI_GENERIC=y
> +CONFIG_ERRNO_STR=y
> diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
> index c636d33b47c1..f7d4f2a66860 100644
> --- a/doc/board/rockchip/rockchip.rst
> +++ b/doc/board/rockchip/rockchip.rst
> @@ -101,6 +101,7 @@ List of mainline supported Rockchip boards:
>   
>   * rk3528
>        - Generic RK3528 (generic-rk3528)
> +     - Radxa E20C (radxa-e20c-rk3528)
>   
>   * rk3566
>        - Anbernic RGxx3 (anbernic-rgxx3-rk3566)