[RFC PATCH 2/3] arm64: dts: rockchip: Add Radxa CM3J
FUKAUMI Naoki
naoki at radxa.com
Wed Jan 7 20:59:21 PST 2026
On 12/29/25 16:55, FUKAUMI Naoki wrote:
> Hi all,
>
> On 12/29/25 16:38, FUKAUMI Naoki wrote:
>> The Radxa CM3J is a feature rich industrial compute module based on
>> the Rockchip RK3568J SoC. [1]
>>
>> Specification:
>> - Quad-core Cortex-A55 CPU
>> - Mali-G52 2EE GPU
>> - 1TOPS NPU
>> - Up to 8GB LPDDR4x RAM
>> - Up to 32GB eMMC (optional)
>> - 16MB SPI flash (optional)
>> - Wi-Fi 5 / BT 5.0 with external antenna connector
>> - Gigabit Ethernet PHY
>> - RK809 PMIC
>> - Green (power) LED
>>
>> [1] https://dl.radxa.com/cm3j/docs/hw/
>> radxa_cm3j_schematic_v1.2_20250115.pdf
>>
>> Signed-off-by: FUKAUMI Naoki <naoki at radxa.com>
>> ---
>> .../boot/dts/rockchip/rk3568-radxa-cm3j.dtsi | 570 ++++++++++++++++++
>> arch/arm64/configs/linux.radxa.config | 1 +
>> 2 files changed, 571 insertions(+)
>> create mode 100644 arch/arm64/boot/dts/rockchip/rk3568-radxa-cm3j.dtsi
>> create mode 120000 arch/arm64/configs/linux.radxa.config
>>
>> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-radxa-cm3j.dtsi b/
>> arch/arm64/boot/dts/rockchip/rk3568-radxa-cm3j.dtsi
>> new file mode 100644
>> index 000000000000..c503e876bcfd
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/rockchip/rk3568-radxa-cm3j.dtsi
>> @@ -0,0 +1,570 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (c) 2025 Radxa Computer (Shenzhen) Co., Ltd.
>> + */
>> +
>> +#include <dt-bindings/leds/common.h>
>> +#include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/pinctrl/rockchip.h>
>> +#include <dt-bindings/soc/rockchip,vop2.h>
>> +#include "rk3568.dtsi"
>> +
>> +/ {
>> + aliases {
>> + mmc0 = &sdhci;
>> + mmc2 = &sdmmc2;
>> + };
>> +
>> + gmac1_clkin: clock-125m {
>> + compatible = "fixed-clock";
>> + clock-frequency = <125000000>;
>> + clock-output-names = "gmac1_clkin";
>> + #clock-cells = <0>;
>> + };
>> +
>> + leds-0 {
>> + compatible = "gpio-leds";
>> +
>> + led-0 {
>> + color = <LED_COLOR_ID_GREEN>;
>> + default-state = "on";
>> + function = LED_FUNCTION_POWER;
>> + gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&gpio0_b4_led>;
>> + };
>> + };
>> +
>> + vcc3v3_sys: regulator-3v3-0 {
>> + compatible = "regulator-fixed";
>> + regulator-name = "vcc3v3_sys";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> + vin-supply = <&dc5v>;
>> + };
>> +
>> + vcc_3v3_1: regulator-3v3-1 {
>> + compatible = "regulator-fixed";
>> + regulator-name = "vcc_3v3_1";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> + vin-supply = <&vcc3v3_sys>;
>> + };
>> +
>> + sdio_pwrseq: sdio-pwrseq {
>> + compatible = "mmc-pwrseq-simple";
>> + clocks = <&rk809 1>;
>> + clock-names = "ext_clock";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&wifi_reg_on_h_gpio3_d4>;
>> + reset-gpios = <&gpio3 RK_PD4 GPIO_ACTIVE_LOW>;
>> + };
>> +};
>> +
>> +&cpu0 {
>> + cpu-supply = <&vdd_cpu>;
>> +};
>> +
>> +&cpu1 {
>> + cpu-supply = <&vdd_cpu>;
>> +};
>> +
>> +&cpu2 {
>> + cpu-supply = <&vdd_cpu>;
>> +};
>> +
>> +&cpu3 {
>> + cpu-supply = <&vdd_cpu>;
>> +};
>> +
>> +&gmac1 {
>> + assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
>> + assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>,
>> <&gmac1_clkin>;
>> + clock_in_out = "input";
>> + phy-handle = <&rgmii_phy1>;
>> + phy-mode = "rgmii-id";
>> + phy-supply = <&vcc_3v3_1>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&gmac1m1_miim
>> + &gmac1m1_clkinout
>> + &gmac1m1_rx_bus2
>> + &gmac1m1_tx_bus2
>> + &gmac1m1_rgmii_clk
>> + &gmac1m1_rgmii_bus>;
>> +};
>
> During a cold boot, it does not work in U-Boot:
>
> => setenv ipaddr 192.168.0.99
> => ping 192.168.0.1
> ethernet at fe010000 Waiting for PHY auto negotiation to complete....... done
> Using ethernet at fe010000 device
>
> ARP Retry count exceeded; starting again
> ping failed; host 192.168.0.1 is not alive
>
> However, it works fine in Linux, and also in U-Boot after a warm reboot.
>
>> +&gpu {
>> + mali-supply = <&vdd_gpu>;
>> + status = "okay";
>> +};
>> +
>> +&hdmi {
>> + avdd-0v9-supply = <&vdda0v9_image>;
>> + avdd-1v8-supply = <&vcca1v8_image>;
>> +};
>> +
>> +&hdmi_in {
>> + hdmi_in_vp0: endpoint {
>> + remote-endpoint = <&vp0_out_hdmi>;
>> + };
>> +};
>> +
>> +&hdmi_out {
>> + hdmi_out_con: endpoint {
>> + remote-endpoint = <&hdmi_con_in>;
>> + };
>> +};
>> +
>> +&i2c0 {
>> + status = "okay";
>> +
>> + rk809: pmic at 20 {
>> + compatible = "rockchip,rk809";
>> + reg = <0x20>;
>> + #clock-cells = <1>;
>> + clock-output-names = "rk809-clkout1", "rk809-clkout2";
>> + interrupt-parent = <&gpio0>;
>> + interrupts = <RK_PA3 IRQ_TYPE_LEVEL_LOW>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pmic_int_l>;
>> + system-power-controller;
>> + vcc1-supply = <&vcc3v3_sys>;
>> + vcc2-supply = <&vcc3v3_sys>;
>> + vcc3-supply = <&vcc3v3_sys>;
>> + vcc4-supply = <&vcc3v3_sys>;
>> + vcc5-supply = <&vcc3v3_sys>;
>> + vcc6-supply = <&vcc3v3_sys>;
>> + vcc7-supply = <&vcc3v3_sys>;
>> + vcc8-supply = <&vcc3v3_sys>;
>> + vcc9-supply = <&vcc3v3_sys>;
>> + wakeup-source;
>> +
>> + regulators {
>> + vdd_logic: DCDC_REG1 {
>> + regulator-name = "vdd_logic";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-initial-mode = <0x2>;
>> + regulator-min-microvolt = <500000>;
>> + regulator-max-microvolt = <1350000>;
>> + regulator-ramp-delay = <6001>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vdd_gpu: DCDC_REG2 {
>> + regulator-name = "vdd_gpu";
>> + regulator-initial-mode = <0x2>;
>> + regulator-min-microvolt = <500000>;
>> + regulator-max-microvolt = <1350000>;
>> + regulator-ramp-delay = <6001>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vcc_ddr: DCDC_REG3 {
>> + regulator-name = "vcc_ddr";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-initial-mode = <0x2>;
>> +
>> + regulator-state-mem {
>> + regulator-on-in-suspend;
>> + };
>> + };
>> +
>> + vdd_npu: DCDC_REG4 {
>> + regulator-name = "vdd_npu";
>> + regulator-initial-mode = <0x2>;
>> + regulator-min-microvolt = <500000>;
>> + regulator-max-microvolt = <1350000>;
>> + regulator-ramp-delay = <6001>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + dc1v8: vccio_flash: vcc_1v8: DCDC_REG5 {
>
> It's labeled as '+1.8v' in the schematic. Do you have any other
> suggestions for the name?
I found several DTSes with regulators whose names(labels) begin with
'dc'. Therefore, this should be acceptable.
>> + regulator-name = "vcc_1v8";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <1800000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vdda0v9_image: LDO_REG1 {
>> + regulator-name = "vdda0v9_image";
>> + regulator-min-microvolt = <900000>;
>> + regulator-max-microvolt = <900000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vdda_0v9: LDO_REG2 {
>> + regulator-name = "vdda_0v9";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <900000>;
>> + regulator-max-microvolt = <900000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vdda0v9_pmu: LDO_REG3 {
>> + regulator-name = "vdda0v9_pmu";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <900000>;
>> + regulator-max-microvolt = <900000>;
>> +
>> + regulator-state-mem {
>> + regulator-on-in-suspend;
>> + regulator-suspend-microvolt = <900000>;
>> + };
>> + };
>> +
>> + vccio_acodec: LDO_REG4 {
>> + regulator-name = "vccio_acodec";
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vccio_sd: LDO_REG5 {
>> + regulator-name = "vccio_sd";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <3300000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vcc3v3_pmu: LDO_REG6 {
>> + regulator-name = "vcc3v3_pmu";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> +
>> + regulator-state-mem {
>> + regulator-on-in-suspend;
>> + regulator-suspend-microvolt = <3300000>;
>> + };
>> + };
>> +
>> + vcca_1v8: LDO_REG7 {
>> + regulator-name = "vcca_1v8";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <1800000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vcca1v8_pmu: LDO_REG8 {
>> + regulator-name = "vcca1v8_pmu";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <1800000>;
>> +
>> + regulator-state-mem {
>> + regulator-on-in-suspend;
>> + regulator-suspend-microvolt = <1800000>;
>> + };
>> + };
>> +
>> + vcca1v8_image: LDO_REG9 {
>> + regulator-name = "vcca1v8_image";
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <1800000>;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + dc3v3: vcc_3v3: SWITCH_REG1 {
>
> It's labeled as '+3.3v' in the schematic. Do you have any other
> suggestions for the name?
>
>> + regulator-name = "vcc_3v3";
>> + regulator-always-on;
>> + regulator-boot-on;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> +
>> + vcc3v3_sd: SWITCH_REG2 {
>> + regulator-name = "vcc3v3_sd";
>> + regulator-always-on;
>> + regulator-boot-on;
>> +
>> + regulator-state-mem {
>> + regulator-off-in-suspend;
>> + };
>> + };
>> + };
>> + };
>> +
>> + vdd_cpu: regulator at 40 {
>> + compatible = "silergy,syr827";
>> + reg = <0x40>;
>> + fcs,suspend-voltage-selector = <1>;
>> + regulator-name = "vdd_cpu";
>> + regulator-always-on;
>> + regulator-boot-on;
>> + regulator-min-microvolt = <712500>;
>> + regulator-max-microvolt = <1390000>;
>> + regulator-ramp-delay = <2300>;
>> + vin-supply = <&dc5v>;
>> + };
>> +};
>> +
>> +&i2c2 {
>> + status = "okay";
>> +
>> + eeprom at 50 {
>> + compatible = "belling,bl24c16a", "atmel,24c16";
>> + reg = <0x50>;
>> + pagesize = <16>;
>> + read-only;
>> + vcc-supply = <&gpio_vref>;
>> + };
>> +};
>> +
>> +&mdio1 {
>> + rgmii_phy1: ethernet-phy at 0 {
>> + compatible = "ethernet-phy-id001c.c916";
>> + reg = <0x0>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&gmac1_rstn_gpio3_b0>; // GPIO4_C3
>> + reset-assert-us = <20000>;
>> + reset-deassert-us = <100000>;
>> + reset-gpios = <&gpio4 RK_PC3 GPIO_ACTIVE_LOW>;
>> + };
>> +};
>> +
>> +&pinctrl {
>> + bluetooth {
>> + bt_reg_on_h_gpio4_b2: bt-reg-on-h-gpio4-b2 {
>> + rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> +
>> + bt_wake_host_h_gpio4_b4: bt-wake-host-h-gpio4-b4 {
>> + rockchip,pins = <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_down>;
>> + };
>> +
>> + host_wake_bt_h_gpio4_b5: host-wake-bt-h-gpio4-b5 {
>> + rockchip,pins = <4 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> + };
>> +
>> + ethernet {
>> + gmac1_rstn_gpio3_b0: gmac1-rstn-gpio3-b0 {
>> + rockchip,pins = <4 RK_PC3 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> + };
>> +
>> + leds {
>> + gpio0_b4_led: gpio0-b4-led {
>> + rockchip,pins = <0 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> + };
>> +
>> + pcie {
>> + pcie20_clkreqnm2: pcie20_clkreqnm2 {
>> + rockchip,pins = <1 RK_PB0 4 &pcfg_pull_none>;
>> + };
>> +
>> + pcie_nrst: pcie-nrst {
>> + rockchip,pins = <1 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> + };
>> +
>> + pmic {
>> + pmic_int_l: pmic-int-l {
>> + rockchip,pins = <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_up>;
>> + };
>> + };
>> +
>> + wifi {
>> + wifi_reg_on_h_gpio3_d4: wifi-reg-on-h-gpio3-d4 {
>> + rockchip,pins = <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
>> + };
>> +
>> + wifi_wake_host_h_gpio3_d5: wifi-wake-host-h-gpio3-d5 {
>> + rockchip,pins = <3 RK_PD5 RK_FUNC_GPIO &pcfg_pull_down>;
>> + };
>> + };
>> +};
>> +
>> +&pcie2x1 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pcie20_clkreqnm2 &pcie_nrst>;
>> + reset-gpios = <&gpio1 RK_PB2 GPIO_ACTIVE_HIGH>;
>> + supports-clkreq;
>> +};
>> +
>> +&pmu_io_domains {
>> + pmuio1-supply = <&vcc3v3_pmu>;
>> + pmuio2-supply = <&vcc_3v3>;
>> + vccio1-supply = <&vccio_acodec>;
>> + vccio2-supply = <&vccio_flash>;
>> + vccio3-supply = <&vccio_sd>;
>> + vccio4-supply = <&vcc_1v8>;
>> + vccio5-supply = <&vcc_3v3>;
>> + vccio6-supply = <&vcc_1v8>;
>> + vccio7-supply = <&vcc_3v3>;
>> + status = "okay";
>> +};
>> +
>> +&saradc {
>> + vref-supply = <&vcca_1v8>;
>> + status = "okay";
>> +};
>> +
>> +&sdhci {
>> + bus-width = <8>;
>> + cap-mmc-highspeed;
>> + mmc-hs200-1_8v;
>> + max-frequency = <200000000>;
>> + no-sd;
>> + no-sdio;
>> + non-removable;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_datastrobe>;
>> + vmmc-supply = <&vcc_3v3>;
>> + vqmmc-supply = <&vccio_flash>;
>> + status = "okay";
>> +};
>> +
>> +&sdmmc2 {
>> + #address-cells = <1>;
>> + bus-width = <4>;
>> + cap-sd-highspeed;
>> + cap-sdio-irq;
>> + disable-wp;
>> + keep-power-in-suspend;
>> + max-frequency = <200000000>;
>> + mmc-pwrseq = <&sdio_pwrseq>;
>> + no-mmc;
>> + no-sd;
>> + non-removable;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&sdmmc2m0_bus4 &sdmmc2m0_clk &sdmmc2m0_cmd>;
>> + sd-uhs-sdr104;
>> + #size-cells = <0>;
>> + status = "okay";
>> +
>> + wifi at 1 {
>> + compatible = "brcm,bcm43456-fmac", "brcm,bcm4329-fmac";
>> + reg = <1>;
>> +#if 0
>> + // brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
>> + interrupt-parent = <&gpio3>;
>> + interrupts = <RK_PD5 IRQ_TYPE_LEVEL_HIGH>;
>> + interrupt-names = "host-wake";
>> +#endif
>
> It doesn't work if interrupt is enabled. Any ideas?
I found that there are no issues with the firmware blobs from
https://github.com/radxa-pkg/radxa-firmware/tree/main/firmware/brcm
But I will drop these lines in v2 to ensure compatibility with various
userland configurations.
Best regards,
--
FUKAUMI Naoki
Radxa Computer (Shenzhen) Co., Ltd.
> Best regards,
>
> --
> FUKAUMI Naoki
> Radxa Computer (Shenzhen) Co., Ltd.
>
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&wifi_wake_host_h_gpio3_d5>;
>> + };
>> +};
>> +
>> +&sfc {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + status = "okay";
>> +
>> + flash at 0 {
>> + compatible = "jedec,spi-nor";
>> + reg = <0>;
>> + spi-max-frequency = <104000000>;
>> + spi-rx-bus-width = <4>;
>> + spi-tx-bus-width = <4>;
>> + vcc-supply = <&vccio_flash>;
>> + };
>> +};
>> +
>> +&tsadc {
>> + rockchip,hw-tshut-mode = <1>;
>> + rockchip,hw-tshut-polarity = <0>;
>> + status = "okay";
>> +};
>> +
>> +&uart2 {
>> + status = "okay";
>> +};
>> +
>> +&uart8 {
>> + dma-names = "tx", "rx";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&uart8m0_xfer &uart8m0_ctsn &uart8m0_rtsn>;
>> + uart-has-rtscts;
>> + status = "okay";
>> +
>> + bluetooth {
>> + compatible = "brcm,bcm4345c5";
>> + clocks = <&rk809 1>;
>> + clock-names = "lpo";
>> + device-wakeup-gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_HIGH>;
>> + host-wakeup-gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>;
>> + max-speed = <1500000>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&bt_reg_on_h_gpio4_b2
>> + &bt_wake_host_h_gpio4_b4
>> + &host_wake_bt_h_gpio4_b5>;
>> + shutdown-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_HIGH>;
>> + vbat-supply = <&vcc_3v3_1>;
>> + vddio-supply = <&vcc_1v8>;
>> + };
>> +};
>> +
>> +&usb_host0_xhci {
>> + extcon = <&usb2phy0>;
>> + maximum-speed = "high-speed";
>> + phys = <&usb2phy0_otg>;
>> + phy-names = "usb2-phy";
>> +};
>> +
>> +&vop {
>> + assigned-clocks = <&cru DCLK_VOP0>, <&cru DCLK_VOP1>;
>> + assigned-clock-parents = <&pmucru PLL_HPLL>, <&cru PLL_VPLL>;
>> + status = "okay";
>> +};
>> +
>> +&vop_mmu {
>> + status = "okay";
>> +};
>> +
>> +&vp0 {
>> + vp0_out_hdmi: endpoint at ROCKCHIP_VOP2_EP_HDMI0 {
>> + reg = <ROCKCHIP_VOP2_EP_HDMI0>;
>> + remote-endpoint = <&hdmi_in_vp0>;
>> + };
>> +};
>> diff --git a/arch/arm64/configs/linux.radxa.config b/arch/arm64/
>> configs/linux.radxa.config
>> new file mode 120000
>> index 000000000000..8af66a0e7a96
>> --- /dev/null
>> +++ b/arch/arm64/configs/linux.radxa.config
>> @@ -0,0 +1 @@
>> +/home/radxa/linux.radxa.config
>> \ No newline at end of file
>
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