board: rockchip: Add Radxa E25 Carrier Board

Radxa E25 is a network application carrier board for the Radxa CM3I SoM
with a RK3568 SoC. It features dual 2.5G ethernet, mini PCIe, M.2 B Key,
USB3, eMMC, SD, nano SIM card slot and a 26-pin GPIO header.

Features tested on a Radxa E25 v1.4:
- SD-card boot
- eMMC boot
- USB host
- PCIe/Ethernet adapters is detected
- SATA

Device tree is imported from linux next-20230728.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: FUKAUMI Naoki <naoki@radxa.com>

7 files changed, 787 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index edf9608..e66c32e 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -181,6 +181,7 @@ dtb-$(CONFIG_ROCKCHIP_RK3568) += \
 	rk3568-nanopi-r5c.dtb \
 	rk3568-nanopi-r5s.dtb \
 	rk3568-odroid-m1.dtb \
+	rk3568-radxa-e25.dtb \
 	rk3568-rock-3a.dtb
 
 dtb-$(CONFIG_ROCKCHIP_RK3588) += \
diff --git a/arch/arm/dts/rk3568-radxa-cm3i.dtsi b/arch/arm/dts/rk3568-radxa-cm3i.dtsi
new file mode 100644
index 0000000..c50fbdd
--- /dev/null
+++ b/arch/arm/dts/rk3568-radxa-cm3i.dtsi
@@ -0,0 +1,415 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include "rk3568.dtsi"
+
+/ {
+	compatible = "radxa,cm3i", "rockchip,rk3568";
+
+	aliases {
+		mmc0 = &sdhci;
+	};
+
+	chosen {
+		stdout-path = "serial2:115200n8";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_user: led-0 {
+			gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_HIGH>;
+			function = LED_FUNCTION_HEARTBEAT;
+			color = <LED_COLOR_ID_GREEN>;
+			linux,default-trigger = "heartbeat";
+			pinctrl-names = "default";
+			pinctrl-0 = <&led_user_en>;
+		};
+	};
+
+	pcie30_avdd0v9: pcie30-avdd0v9-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd0v9";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <900000>;
+		regulator-max-microvolt = <900000>;
+		vin-supply = <&vcc3v3_sys>;
+	};
+
+	pcie30_avdd1v8: pcie30-avdd1v8-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd1v8";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc3v3_sys>;
+	};
+
+	vcc3v3_sys: vcc3v3-sys-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v_input>;
+	};
+
+	vcc5v0_sys: vcc5v0-sys-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc5v_input>;
+	};
+
+	/* labeled +5v_input in schematic */
+	vcc5v_input: vcc5v-input-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v_input";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+};
+
+&combphy0 {
+	status = "okay";
+};
+
+&combphy1 {
+	status = "okay";
+};
+
+&combphy2 {
+	status = "okay";
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu1 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu2 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu3 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&display_subsystem {
+	status = "disabled";
+};
+
+&gpu {
+	mali-supply = <&vdd_gpu>;
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+
+	vdd_cpu: regulator@1c {
+		compatible = "tcs,tcs4525";
+		reg = <0x1c>;
+		fcs,suspend-voltage-selector = <1>;
+		regulator-name = "vdd_cpu";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <800000>;
+		regulator-max-microvolt = <1150000>;
+		regulator-ramp-delay = <2300>;
+		vin-supply = <&vcc5v_input>;
+
+		regulator-state-mem {
+			regulator-off-in-suspend;
+		};
+	};
+
+	rk809: pmic@20 {
+		compatible = "rockchip,rk809";
+		reg = <0x20>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA3 IRQ_TYPE_LEVEL_LOW>;
+		#clock-cells = <1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_int>;
+		rockchip,system-power-controller;
+		wakeup-source;
+
+		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>;
+
+		regulators {
+			vdd_logic: DCDC_REG1 {
+				regulator-name = "vdd_logic";
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-init-microvolt = <900000>;
+				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-always-on;
+				regulator-init-microvolt = <900000>;
+				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-init-microvolt = <900000>;
+				regulator-initial-mode = <0x2>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-ramp-delay = <6001>;
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcc_1v8: DCDC_REG5 {
+				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-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vccio_sd: LDO_REG5 {
+				regulator-name = "vccio_sd";
+				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;
+				};
+			};
+
+			vcc_3v3: SWITCH_REG1 {
+				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-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+		};
+	};
+};
+
+&pinctrl {
+	leds {
+		led_user_en: led_user_en {
+			rockchip,pins = <0 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	pmic {
+		pmic_int: pmic_int {
+			rockchip,pins = <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
+&pmu_io_domains {
+	pmuio1-supply = <&vcc3v3_pmu>;
+	pmuio2-supply = <&vcc3v3_pmu>;
+	vccio1-supply = <&vccio_acodec>;
+	vccio2-supply = <&vcc_1v8>;
+	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>;
+	max-frequency = <200000000>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_datastrobe>;
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vcc_1v8>;
+	status = "okay";
+};
+
+&tsadc {
+	rockchip,hw-tshut-mode = <1>;
+	rockchip,hw-tshut-polarity = <0>;
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usb2phy0 {
+	status = "okay";
+};
+
+&usb2phy1 {
+	status = "okay";
+};
+
+&usb_host0_xhci {
+	extcon = <&usb2phy0>;
+};
diff --git a/arch/arm/dts/rk3568-radxa-e25-u-boot.dtsi b/arch/arm/dts/rk3568-radxa-e25-u-boot.dtsi
new file mode 100644
index 0000000..572bdc5
--- /dev/null
+++ b/arch/arm/dts/rk3568-radxa-e25-u-boot.dtsi
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "rk356x-u-boot.dtsi"
+
+/ {
+	chosen {
+		stdout-path = &uart2;
+	};
+};
+
+/* PCIe PHY driver in U-Boot does not support bifurcation */
+&pcie3x1 {
+	status = "disabled";
+};
+
+&sdhci {
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+};
+
+&uart2 {
+	bootph-all;
+	clock-frequency = <24000000>;
+	status = "okay";
+};
+
+&usb_host0_xhci {
+	dr_mode = "host";
+};
diff --git a/arch/arm/dts/rk3568-radxa-e25.dts b/arch/arm/dts/rk3568-radxa-e25.dts
new file mode 100644
index 0000000..72ad74c
--- /dev/null
+++ b/arch/arm/dts/rk3568-radxa-e25.dts
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+#include "rk3568-radxa-cm3i.dtsi"
+
+/ {
+	model = "Radxa E25 Carrier Board";
+	compatible = "radxa,e25", "radxa,cm3i", "rockchip,rk3568";
+
+	aliases {
+		mmc1 = &sdmmc0;
+	};
+
+	pwm-leds {
+		compatible = "pwm-leds-multicolor";
+
+		multi-led {
+			color = <LED_COLOR_ID_RGB>;
+			max-brightness = <255>;
+
+			led-red {
+				color = <LED_COLOR_ID_RED>;
+				pwms = <&pwm1 0 1000000 0>;
+			};
+
+			led-green {
+				color = <LED_COLOR_ID_GREEN>;
+				pwms = <&pwm2 0 1000000 0>;
+			};
+
+			led-blue {
+				color = <LED_COLOR_ID_BLUE>;
+				pwms = <&pwm12 0 1000000 0>;
+			};
+		};
+	};
+
+	vbus_typec: vbus-typec-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 RK_PB7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vbus_typec_en>;
+		regulator-name = "vbus_typec";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	/* actually fed by vcc5v0_sys, dependent
+	 * on pi6c clock generator
+	 */
+	vcc3v3_minipcie: vcc3v3-minipcie-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio3 RK_PA7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&minipcie_enable_h>;
+		regulator-name = "vcc3v3_minipcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc3v3_pi6c_05>;
+	};
+
+	vcc3v3_ngff: vcc3v3-ngff-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 RK_PD6 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ngffpcie_enable_h>;
+		regulator-name = "vcc3v3_ngff";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc3v3_pcie30x1: vcc3v3-pcie30x1-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 RK_PC5 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pcie30x1_enable_h>;
+		regulator-name = "vcc3v3_pcie30x1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc3v3_pi6c_05: vcc3v3-pi6c-05-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpios = <&gpio0 RK_PC7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pcie_enable_h>;
+		regulator-name = "vcc3v3_pcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+};
+
+&combphy1 {
+	phy-supply = <&vcc3v3_pcie30x1>;
+};
+
+&pcie2x1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie20_reset_h>;
+	reset-gpios = <&gpio1 RK_PB2 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pi6c_05>;
+	status = "okay";
+};
+
+&pcie30phy {
+	data-lanes = <1 2>;
+	status = "okay";
+};
+
+&pcie3x1 {
+	num-lanes = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie30x1m0_pins>;
+	reset-gpios = <&gpio0 RK_PC3 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_minipcie>;
+	status = "okay";
+};
+
+&pcie3x2 {
+	num-lanes = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie30x2_reset_h>;
+	reset-gpios = <&gpio2 RK_PD6 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pi6c_05>;
+	status = "okay";
+};
+
+&pinctrl {
+	pcie {
+		pcie20_reset_h: pcie20-reset-h {
+			rockchip,pins = <1 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		pcie30x1_enable_h: pcie30x1-enable-h {
+			rockchip,pins = <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		pcie30x2_reset_h: pcie30x2-reset-h {
+			rockchip,pins = <2 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		pcie_enable_h: pcie-enable-h {
+			rockchip,pins = <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	usb {
+		minipcie_enable_h: minipcie-enable-h {
+			rockchip,pins = <3 RK_PA7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		ngffpcie_enable_h: ngffpcie-enable-h {
+			rockchip,pins = <0 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		vbus_typec_en: vbus_typec_en {
+			rockchip,pins = <0 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&pwm1 {
+	status = "okay";
+};
+
+&pwm2 {
+	status = "okay";
+};
+
+&pwm12 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm12m1_pins>;
+	status = "okay";
+};
+
+&sata1 {
+	status = "okay";
+};
+
+&sdmmc0 {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cd-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_LOW>;
+	/* Also used in pcie30x1_clkreqnm0 */
+	disable-wp;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc0_bus4 &sdmmc0_clk &sdmmc0_cmd>;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc3v3_sd>;
+	vqmmc-supply = <&vccio_sd>;
+	status = "okay";
+};
+
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};
+
+&usb_host0_xhci {
+	status = "okay";
+};
+
+&usb_host1_ehci {
+	status = "okay";
+};
+
+&usb_host1_ohci {
+	status = "okay";
+};
+
+&usb2phy0_otg {
+	phy-supply = <&vbus_typec>;
+	status = "okay";
+};
+
+&usb2phy1_host {
+	phy-supply = <&vcc3v3_minipcie>;
+	status = "okay";
+};
+
+&usb2phy1_otg {
+	phy-supply = <&vcc3v3_ngff>;
+	status = "okay";
+};
diff --git a/board/rockchip/evb_rk3568/MAINTAINERS b/board/rockchip/evb_rk3568/MAINTAINERS
index a8ed250..82a92b8 100644
--- a/board/rockchip/evb_rk3568/MAINTAINERS
+++ b/board/rockchip/evb_rk3568/MAINTAINERS
@@ -27,6 +27,14 @@ M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained
 F:	configs/radxa-cm3-io-rk3566_defconfig
 
+RADXA-E25
+M:	Jonas Karlman <jonas@kwiboo.se>
+S:	Maintained
+F:	configs/radxa-e25-rk3568_defconfig
+F:	arch/arm/dts/rk3568-radxa-cm3i.dtsi
+F:	arch/arm/dts/rk3568-radxa-e25.dts
+F:	arch/arm/dts/rk3568-radxa-e25-u-boot.dtsi
+
 ROCK-3A
 M:      Akash Gajjar <gajjar04akash@gmail.com>
 S:      Maintained
diff --git a/configs/radxa-e25-rk3568_defconfig b/configs/radxa-e25-rk3568_defconfig
new file mode 100644
index 0000000..a905100
--- /dev/null
+++ b/configs/radxa-e25-rk3568_defconfig
@@ -0,0 +1,94 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_SYS_HAS_NONCACHED_MEMORY=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_TEXT_BASE=0x00a00000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc00000
+CONFIG_DEFAULT_DEVICE_TREE="rk3568-radxa-e25"
+CONFIG_ROCKCHIP_RK3568=y
+CONFIG_SPL_ROCKCHIP_COMMON_BOARD=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_STACK_R_ADDR=0x600000
+CONFIG_SPL_STACK=0x400000
+CONFIG_DEBUG_UART_BASE=0xFE660000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_PCI=y
+CONFIG_DEBUG_UART=y
+CONFIG_AHCI=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_FIT_SIGNATURE=y
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3568-radxa-e25.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_SPL_MAX_SIZE=0x40000
+CONFIG_SPL_PAD_TO=0x7f8000
+CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
+CONFIG_SPL_BSS_START_ADDR=0x4000000
+CONFIG_SPL_BSS_MAX_SIZE=0x4000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_ATF=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_PMIC=y
+CONFIG_CMD_REGULATOR=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_SPL_REGMAP=y
+CONFIG_SPL_SYSCON=y
+CONFIG_AHCI_PCI=y
+CONFIG_DWC_AHCI=y
+CONFIG_SPL_CLK=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_MISC=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_HS200_SUPPORT=y
+CONFIG_SPL_MMC_HS200_SUPPORT=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_RTL8169=y
+CONFIG_PCIE_DW_ROCKCHIP=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_DM_PMIC=y
+CONFIG_PMIC_RK8XX=y
+CONFIG_REGULATOR_RK8XX=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_SPL_RAM=y
+CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_SYSRESET=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_GENERIC=y
+CONFIG_USB_DWC3=y
+CONFIG_USB_DWC3_GENERIC=y
+CONFIG_ERRNO_STR=y
diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index 39e9532..49a0c57 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -101,6 +101,7 @@ List of mainline supported Rockchip boards:
      - Pine64 SOQuartz on Blade (soquartz-blade-rk3566_defconfig)
      - Pine64 SOQuartz on CM4-IO (soquartz-cm4-rk3566_defconfig)
      - Pine64 SOQuartz on Model A (soquartz-model-a-rk3566_defconfig)
+     - Radxa E25 Carrier Board (radxa-e25-rk3568_defconfig)
 
 * rk3588
      - Rockchip EVB (evb-rk3588)