From: Stephen Chen <stephen@radxa.com>

The Radxa ROCK 4D board is based on the Rockchip rk3576 SoC.

The device tree adds support for basic devices:
 - UART
 - SD Card
 - Ethernet
 - USB
 - RTC

It has 4 USB ports but only 3 are usable as the top left one is used
for maskrom.

It has a USB-C port that is only used for powering the board.

Signed-off-by: Stephen Chen <stephen@radxa.com>
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
---
 arch/arm64/boot/dts/rockchip/Makefile         |   1 +
 .../boot/dts/rockchip/rk3576-rock-4d.dts      | 651 ++++++++++++++++++
 2 files changed, 652 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index def1222c1907e..a112aeb37948a 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -132,6 +132,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-display-vz.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-rock-4d.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3582-radxa-e52c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-sige7.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-w3.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
new file mode 100644
index 0000000000000..f356742f9d643
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
@@ -0,0 +1,651 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Radxa Computer (Shenzhen) Co., Ltd.
+ *
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/soc/rockchip,vop2.h>
+#include <dt-bindings/usb/pd.h>
+#include "rk3576.dtsi"
+
+/ {
+	model = "Radxa ROCK 4D";
+	compatible = "radxa,rock-4d", "rockchip,rk3576";
+
+	aliases {
+		ethernet0 = &gmac0;
+	};
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+
+	leds: leds {
+		compatible = "gpio-leds";
+
+		power-led {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+		};
+
+		user-led {
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_HEARTBEAT;
+			gpios = <&gpio0 RK_PC4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	vcc_12v0_dcin: regulator-vcc-12v0-dcin {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_12v0_dcin";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+	};
+
+	vcc_5v0_sys: regulator-vcc-5v0-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc_12v0_dcin>;
+	};
+
+	vcc_5v0_device: regulator-vcc-5v0-device {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_5v0_device";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc_12v0_dcin>;
+	};
+
+	vcc_2v0_pldo_s3: regulator-vcc-2v0-pldo-s3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_2v0_pldo_s3";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <2000000>;
+		regulator-max-microvolt = <2000000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_1v1_nldo_s3: regulator-vcc-1v1-nldo-s3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v1_nldo_s3";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1100000>;
+		regulator-max-microvolt = <1100000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_3v3_rtc_s5: regulator-vcc-3v3-rtc-s5 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_3v3_rtc_s5";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_1v8_s0: regulator-vcc-1v8-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v8_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_1v8_s3>;
+	};
+
+	vcc_3v3_s0: regulator-vcc-3v3-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_3v3_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_3v3_s3>;
+	};
+
+	vcc_3v3_ufs_s0: regulator-vcc-ufs-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_3v3_ufs_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_1v8_ufs_vccq2_s0: regulator-vcc1v8-ufs-vccq2-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v8_ufs_vccq2_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_1v8_s3>;
+	};
+
+	vcc_1v2_ufs_vccq_s0: regulator-vcc-1v2-ufs-vccq-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v2_ufs_vccq_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_3v3_pcie: regulator-vcc-3v3-pcie {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_3v3_pcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpio = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc_5v0_sys>;
+	};
+
+	vcc_5v0_host: regulator-vcc-5v0-host {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_host";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		enable-active-high;
+		gpio = <&gpio0 RK_PD3 GPIO_ACTIVE_HIGH>;
+		vin-supply = <&vcc_5v0_device>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_host_pwren>;
+	};
+};
+
+&cpu_l0 {
+	cpu-supply = <&vdd_cpu_lit_s0>;
+};
+
+&gmac0 {
+	phy-mode = "rgmii-id";
+	clock_in_out = "output";
+
+	snps,reset-gpio = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 20000 100000>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&eth0m0_miim
+		     &eth0m0_tx_bus2
+		     &eth0m0_rx_bus2
+		     &eth0m0_rgmii_clk
+		     &eth0m0_rgmii_bus
+		     &ethm0_clk0_25m_out>;
+
+	phy-handle = <&rgmii_phy0>;
+	status = "okay";
+};
+
+&gpu {
+	mali-supply = <&vdd_gpu_s0>;
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+
+	pmic@23 {
+		compatible = "rockchip,rk806";
+		reg = <0x23>;
+
+		interrupt-parent = <&gpio0>;
+		interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_pins
+			     &rk806_dvs1_null
+			     &rk806_dvs2_null
+			     &rk806_dvs3_null>;
+
+		system-power-controller;
+
+		vcc1-supply = <&vcc_5v0_sys>;
+		vcc2-supply = <&vcc_5v0_sys>;
+		vcc3-supply = <&vcc_5v0_sys>;
+		vcc4-supply = <&vcc_5v0_sys>;
+		vcc5-supply = <&vcc_5v0_sys>;
+		vcc6-supply = <&vcc_5v0_sys>;
+		vcc7-supply = <&vcc_5v0_sys>;
+		vcc8-supply = <&vcc_5v0_sys>;
+		vcc9-supply = <&vcc_5v0_sys>;
+		vcc10-supply = <&vcc_5v0_sys>;
+		vcc11-supply = <&vcc_2v0_pldo_s3>;
+		vcc12-supply = <&vcc_5v0_sys>;
+		vcc13-supply = <&vcc_1v1_nldo_s3>;
+		vcc14-supply = <&vcc_1v1_nldo_s3>;
+		vcca-supply = <&vcc_5v0_sys>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		rk806_dvs1_null: dvs1-null-pins {
+			pins = "gpio_pwrctrl1";
+			function = "pin_fun0";
+		};
+
+		rk806_dvs2_null: dvs2-null-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun0";
+		};
+
+		rk806_dvs3_null: dvs3-null-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun0";
+		};
+
+		rk806_dvs1_slp: dvs1-slp-pins {
+			pins = "gpio_pwrctrl1";
+			function = "pin_fun1";
+		};
+
+		rk806_dvs1_pwrdn: dvs1-pwrdn-pins {
+			pins = "gpio_pwrctrl1";
+			function = "pin_fun2";
+		};
+
+		rk806_dvs1_rst: dvs1-rst-pins {
+			pins = "gpio_pwrctrl1";
+			function = "pin_fun3";
+		};
+
+		rk806_dvs2_slp: dvs2-slp-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun1";
+		};
+
+		rk806_dvs2_pwrdn: dvs2-pwrdn-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun2";
+		};
+
+		rk806_dvs2_rst: dvs2-rst-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun3";
+		};
+
+		rk806_dvs2_dvs: dvs2-dvs-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun4";
+		};
+
+		rk806_dvs2_gpio: dvs2-gpio-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun5";
+		};
+
+		rk806_dvs3_slp: dvs3-slp-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun1";
+		};
+
+		rk806_dvs3_pwrdn: dvs3-pwrdn-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun2";
+		};
+
+		rk806_dvs3_rst: dvs3-rst-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun3";
+		};
+
+		rk806_dvs3_dvs: dvs3-dvs-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun4";
+		};
+
+		rk806_dvs3_gpio: dvs3-gpio-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun5";
+		};
+
+		regulators {
+			vdd_cpu_big_s0: dcdc-reg1 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <950000>;
+				regulator-ramp-delay = <12500>;
+				regulator-name = "vdd_cpu_big_s0";
+				regulator-enable-ramp-delay = <400>;
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdd_npu_s0: dcdc-reg2 {
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <950000>;
+				regulator-ramp-delay = <12500>;
+				regulator-name = "vdd_npu_s0";
+				regulator-enable-ramp-delay = <400>;
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdd_cpu_lit_s0: dcdc-reg3 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <950000>;
+				regulator-ramp-delay = <12500>;
+				regulator-name = "vdd_cpu_lit_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+					regulator-suspend-microvolt = <750000>;
+				};
+			};
+
+			vcc_3v3_s3: dcdc-reg4 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc_3v3_s3";
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3300000>;
+				};
+			};
+
+			vdd_gpu_s0: dcdc-reg5 {
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <900000>;
+				regulator-ramp-delay = <12500>;
+				regulator-name = "vdd_gpu_s0";
+				regulator-enable-ramp-delay = <400>;
+				regulator-state-mem {
+					regulator-off-in-suspend;
+					regulator-suspend-microvolt = <850000>;
+				};
+			};
+
+			vddq_ddr_s0: dcdc-reg6 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-name = "vddq_ddr_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdd_logic_s0: dcdc-reg7 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <800000>;
+				regulator-name = "vdd_logic_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcc_1v8_s3: dcdc-reg8 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc_1v8_s3";
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vdd2_ddr_s3: dcdc-reg9 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-name = "vdd2_ddr_s3";
+				regulator-state-mem {
+					regulator-on-in-suspend;
+				};
+			};
+
+			vdd_ddr_s0: dcdc-reg10 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-name = "vdd_ddr_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcca_1v8_s0: pldo-reg1 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcca_1v8_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcca1v8_pldo2_s0: pldo-reg2 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcca1v8_pldo2_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdda_1v2_s0: pldo-reg3 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-name = "vdda_1v2_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcca_3v3_s0: pldo-reg4 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcca_3v3_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vccio_sd_s0: pldo-reg5 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vccio_sd_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vcca1v8_pldo6_s3: pldo-reg6 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcca1v8_pldo6_s3";
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vdd_0v75_s3: nldo-reg1 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <750000>;
+				regulator-max-microvolt = <750000>;
+				regulator-name = "vdd_0v75_s3";
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <750000>;
+				};
+			};
+
+			vdda_ddr_pll_s0: nldo-reg2 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <850000>;
+				regulator-name = "vdda_ddr_pll_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdda0v75_hdmi_s0: nldo-reg3 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <837500>;
+				regulator-max-microvolt = <837500>;
+				regulator-name = "vdda0v75_hdmi_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdda_0v85_s0: nldo-reg4 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <850000>;
+				regulator-name = "vdda_0v85_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+
+			vdda_0v75_s0: nldo-reg5 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <750000>;
+				regulator-max-microvolt = <750000>;
+				regulator-name = "vdda_0v75_s0";
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};
+		};
+	};
+};
+
+&i2c2 {
+	status = "okay";
+
+	hym8563: rtc@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		clock-output-names = "hym8563";
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PB0 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&hym8563_int>;
+		wakeup-source;
+		#clock-cells = <0>;
+	};
+};
+
+&mdio0 {
+	rgmii_phy0: phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0x1>;
+		clocks = <&cru REFCLKO25M_GMAC0_OUT>;
+	};
+};
+
+&pinctrl {
+	hym8563 {
+		hym8563_int: hym8563-int {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	leds {
+		led_rgb_r: led-red-en {
+			rockchip,pins = <4 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+		led_rgb_g: led-green-en {
+			rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	usb {
+		usb_host_pwren: usb-host-pwren {
+			rockchip,pins = <4 RK_PD3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	disable-wp;
+	max-frequency = <200000000>;
+	no-sdio;
+	no-mmc;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc_3v3_s3>;
+	vqmmc-supply = <&vccio_sd_s0>;
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-0 = <&uart0m0_xfer>;
+	status = "okay";
+};
+
+&combphy1_psu {
+	status = "okay";
+};
+
+&u2phy0 {
+	status = "okay";
+};
+
+&u2phy1 {
+	status = "okay";
+};
+
+&usb_drd1_dwc3 {
+	dr_mode = "host";
+	status = "okay";
+};
-- 
2.48.1

Hi Detlev,

On 2025-02-13 15:57, Detlev Casanova wrote:
> From: Stephen Chen <stephen@radxa.com>
> 
> The Radxa ROCK 4D board is based on the Rockchip rk3576 SoC.
> 
> The device tree adds support for basic devices:
>  - UART
>  - SD Card
>  - Ethernet
>  - USB
>  - RTC
> 
> It has 4 USB ports but only 3 are usable as the top left one is used
> for maskrom.
> 
> It has a USB-C port that is only used for powering the board.
> 
> Signed-off-by: Stephen Chen <stephen@radxa.com>
> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
> ---
>  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
>  .../boot/dts/rockchip/rk3576-rock-4d.dts      | 651 ++++++++++++++++++
>  2 files changed, 652 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> 
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> index def1222c1907e..a112aeb37948a 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -132,6 +132,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-display-vz.dtbo
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-rock-4d.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3582-radxa-e52c.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-sige7.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-w3.dtb
> diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> new file mode 100644
> index 0000000000000..f356742f9d643
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> @@ -0,0 +1,651 @@

[snip]

> +&gmac0 {
> +	phy-mode = "rgmii-id";
> +	clock_in_out = "output";
> +
> +	snps,reset-gpio = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>;
> +	snps,reset-active-low;
> +	snps,reset-delays-us = <0 20000 100000>;

The snps,reset- props are deprecated and should be changed to reset-
props in the phy node.

> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&eth0m0_miim
> +		     &eth0m0_tx_bus2
> +		     &eth0m0_rx_bus2
> +		     &eth0m0_rgmii_clk
> +		     &eth0m0_rgmii_bus
> +		     &ethm0_clk0_25m_out>;
> +
> +	phy-handle = <&rgmii_phy0>;
> +	status = "okay";
> +};

[snip]

> +&mdio0 {
> +	rgmii_phy0: phy@1 {

Maybe ethernet-phy@1 ?

> +		compatible = "ethernet-phy-ieee802.3-c22";
> +		reg = <0x1>;
> +		clocks = <&cru REFCLKO25M_GMAC0_OUT>;

Please add reset- props here.

Changing to use reset- props may cause issue if a RTL8211F PHY is used
on the board. Use a ethernet-phy-id compatible or mainline U-Boot to
ensure the Ethernet PHY can be discovered during probe.

Regards,
Jonas

> +	};
> +};
> +

[snip]

Hi Jonas,

On Thursday, 13 February 2025 10:48:10 EST Jonas Karlman wrote:
> Hi Detlev,
> 
> On 2025-02-13 15:57, Detlev Casanova wrote:
> > From: Stephen Chen <stephen@radxa.com>
> > 
> > The Radxa ROCK 4D board is based on the Rockchip rk3576 SoC.
> > 
> > The device tree adds support for basic devices:
> >  - UART
> >  - SD Card
> >  - Ethernet
> >  - USB
> >  - RTC
> > 
> > It has 4 USB ports but only 3 are usable as the top left one is used
> > for maskrom.
> > 
> > It has a USB-C port that is only used for powering the board.
> > 
> > Signed-off-by: Stephen Chen <stephen@radxa.com>
> > Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
> > ---
> > 
> >  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
> >  .../boot/dts/rockchip/rk3576-rock-4d.dts      | 651 ++++++++++++++++++
> >  2 files changed, 652 insertions(+)
> >  create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/Makefile
> > b/arch/arm64/boot/dts/rockchip/Makefile index
> > def1222c1907e..a112aeb37948a 100644
> > --- a/arch/arm64/boot/dts/rockchip/Makefile
> > +++ b/arch/arm64/boot/dts/rockchip/Makefile
> > @@ -132,6 +132,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) +=
> > rk3568-wolfvision-pf5-display-vz.dtbo> 
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
> > 
> > +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-rock-4d.dtb
> > 
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3582-radxa-e52c.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-sige7.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-w3.dtb
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> > b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts new file mode 100644
> > index 0000000000000..f356742f9d643
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
> > @@ -0,0 +1,651 @@
> 
> [snip]
> 
> > +&gmac0 {
> > +	phy-mode = "rgmii-id";
> > +	clock_in_out = "output";
> > +
> > +	snps,reset-gpio = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>;
> > +	snps,reset-active-low;
> > +	snps,reset-delays-us = <0 20000 100000>;
> 
> The snps,reset- props are deprecated and should be changed to reset-
> props in the phy node.

Arg, second time I use deprectated props on new things. Are there plans or 
ways to make dtbs_check warn about those ?

> > +
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&eth0m0_miim
> > +		     &eth0m0_tx_bus2
> > +		     &eth0m0_rx_bus2
> > +		     &eth0m0_rgmii_clk
> > +		     &eth0m0_rgmii_bus
> > +		     &ethm0_clk0_25m_out>;
> > +
> > +	phy-handle = <&rgmii_phy0>;
> > +	status = "okay";
> > +};
> 
> [snip]
> 
> > +&mdio0 {
> > +	rgmii_phy0: phy@1 {
> 
> Maybe ethernet-phy@1 ?

Indeed.

> > +		compatible = "ethernet-phy-ieee802.3-c22";
> > +		reg = <0x1>;
> > +		clocks = <&cru REFCLKO25M_GMAC0_OUT>;
> 
> Please add reset- props here.
> 
> Changing to use reset- props may cause issue if a RTL8211F PHY is used
> on the board. Use a ethernet-phy-id compatible or mainline U-Boot to
> ensure the Ethernet PHY can be discovered during probe.

Using downstream u-boot, with the RTL8211F PHY, linux can still detect the PHY 
and use it correctly, even with reset-* props at the PHY level.

I guess I can keep those there then, unless the issues you mention are more 
subtle than that ?


Detlev.

Hi Detlev,

On 2025-02-13 20:56, Detlev Casanova wrote:
> Hi Jonas,
> 
> On Thursday, 13 February 2025 10:48:10 EST Jonas Karlman wrote:
>> Hi Detlev,
>>
>> On 2025-02-13 15:57, Detlev Casanova wrote:
>>> From: Stephen Chen <stephen@radxa.com>
>>>
>>> The Radxa ROCK 4D board is based on the Rockchip rk3576 SoC.
>>>
>>> The device tree adds support for basic devices:
>>>  - UART
>>>  - SD Card
>>>  - Ethernet
>>>  - USB
>>>  - RTC
>>>
>>> It has 4 USB ports but only 3 are usable as the top left one is used
>>> for maskrom.
>>>
>>> It has a USB-C port that is only used for powering the board.
>>>
>>> Signed-off-by: Stephen Chen <stephen@radxa.com>
>>> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
>>> ---
>>>
>>>  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
>>>  .../boot/dts/rockchip/rk3576-rock-4d.dts      | 651 ++++++++++++++++++
>>>  2 files changed, 652 insertions(+)
>>>  create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
>>>
>>> diff --git a/arch/arm64/boot/dts/rockchip/Makefile
>>> b/arch/arm64/boot/dts/rockchip/Makefile index
>>> def1222c1907e..a112aeb37948a 100644
>>> --- a/arch/arm64/boot/dts/rockchip/Makefile
>>> +++ b/arch/arm64/boot/dts/rockchip/Makefile
>>> @@ -132,6 +132,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) +=
>>> rk3568-wolfvision-pf5-display-vz.dtbo> 
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
>>>
>>> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-rock-4d.dtb
>>>
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3582-radxa-e52c.dtb
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-sige7.dtb
>>>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-armsom-w3.dtb
>>>
>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
>>> b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts new file mode 100644
>>> index 0000000000000..f356742f9d643
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
>>> @@ -0,0 +1,651 @@
>>
>> [snip]
>>
>>> +&gmac0 {
>>> +	phy-mode = "rgmii-id";
>>> +	clock_in_out = "output";
>>> +
>>> +	snps,reset-gpio = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>;
>>> +	snps,reset-active-low;
>>> +	snps,reset-delays-us = <0 20000 100000>;
>>
>> The snps,reset- props are deprecated and should be changed to reset-
>> props in the phy node.
> 
> Arg, second time I use deprectated props on new things. Are there plans or 
> ways to make dtbs_check warn about those ?

Agree, would be nice if dtbs_check could be a little bit more verbose
about use of deprecated props :-)

> 
>>> +
>>> +	pinctrl-names = "default";
>>> +	pinctrl-0 = <&eth0m0_miim
>>> +		     &eth0m0_tx_bus2
>>> +		     &eth0m0_rx_bus2
>>> +		     &eth0m0_rgmii_clk
>>> +		     &eth0m0_rgmii_bus
>>> +		     &ethm0_clk0_25m_out>;
>>> +
>>> +	phy-handle = <&rgmii_phy0>;
>>> +	status = "okay";
>>> +};
>>
>> [snip]
>>
>>> +&mdio0 {
>>> +	rgmii_phy0: phy@1 {
>>
>> Maybe ethernet-phy@1 ?
> 
> Indeed.
> 
>>> +		compatible = "ethernet-phy-ieee802.3-c22";
>>> +		reg = <0x1>;
>>> +		clocks = <&cru REFCLKO25M_GMAC0_OUT>;
>>
>> Please add reset- props here.
>>
>> Changing to use reset- props may cause issue if a RTL8211F PHY is used
>> on the board. Use a ethernet-phy-id compatible or mainline U-Boot to
>> ensure the Ethernet PHY can be discovered during probe.
> 
> Using downstream u-boot, with the RTL8211F PHY, linux can still detect the PHY 
> and use it correctly, even with reset-* props at the PHY level.
> 
> I guess I can keep those there then, unless the issues you mention are more 
> subtle than that ?
> 

Ohh, typically there has been issues for Linux to find the Ethernet PHY unless
it has first been reset by boot firmware. Something like:

  rk_gmac-dwmac fe010000.ethernet eth0: no phy at addr -1
  rk_gmac-dwmac fe010000.ethernet eth0: stmmac_open: Cannot attach to PHY (error: -19)

There was a chicken-and-egg issue related to detecting ethernet phy:
- phy needs to be reset or phy_id read back as 0xffffffff on mdio bus
- phy device is not created because a valid phy_id is not read back
- phy device needs to be created before it can be reset

See [1] for more details on the ethernet phy issue that typically have
affected multiple Rockchip boards with RTL8211F PHYs. Maybe it has been
fixed in v6.13+.

[1] https://lore.kernel.org/all/47d55aca-bee6-810f-379f-9431649fefa6@kwiboo.se/

Regards,
Jonas

> 
> Detlev.
> 
> 
>