[PATCH v4 0/2] arm64: dts: rockchip: Add rk3576 evb2 board

[PATCH v4 0/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Chaoyi Chen]

From: Chaoyi Chen <chaoyi.chen@rock-chips.com>

Hi,

This series add support for rk3576 evb2 board.

General features for rk3576 evb2 board:
    - Rockchip RK3576
    - LPDDR4/4X
    - eMMC5.1
    - RK806-2x2pcs + DiscretePower
    - 1x HDMI2.1 TX / HDMI2.0 RX
    - 1x full size DP1.4 TX (Only 2 Lanes)
    - 2x 10/100/1000M Ethernet
    - 5x SATA3.0 7Pin Slot
    - 2x USB3.2 Gen1 Host
    - 3x USB2.0 Host
    - WIFI/BT
    - ...

To make the USB hub work, the additional patch from usb-next is required:

[0] https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h=usb-next&id=00fcc9c86a134c488fd857b5460a7925228272c1
[1] https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h=usb-next&id=fa3bb5011f33cccd246072954e64d64483d0d774

Changes in v4:
- Link to v3: https://lore.kernel.org/all/20260112022823.91-1-kernel@airkyi.com/
- Move the USB hub code into a separate patch series, and that series have
  already been merged into usb-next.
- Fix supply and reset for usb hub.
- Add cd-gpios for sdmmc.

Changes in v3:
- Link to v2: https://lore.kernel.org/all/20260107070322.323-1-kernel@airkyi.com/ 
- Add binding for WCH CH334/CH335 hub controller.
- Add alias for mmc.
- Rename some usb vbus regulator.
- Add DP regulator.
- Change gmac phy-mode to rgmii-id.
- Add target-supply for sata.
- Change vcc-supply for ufshc.
- Add usb hub.
- ...

Changes in v2:
- Link to v1: https://lore.kernel.org/all/20260104023703.118-1-kernel@airkyi.com/
- Enable hdmi_sound and sai6.
- Add more cpu-supply.
- Use regulator to control sata power.
- Remove "cap-mmc-highspeed" prop in sdmmc.
- Add regulator supply for ufshc.
- Add the missing vcc3v3_hubreset regulator.
- Add otg capability for usb_drd0_dwc3.

Chaoyi Chen (2):
  dt-bindings: arm: rockchip: Add rk3576 evb2 board
  arm64: dts: rockchip: Add rk3576 evb2 board

 .../devicetree/bindings/arm/rockchip.yaml     |    4 +-
 arch/arm64/boot/dts/rockchip/Makefile         |    1 +
 .../boot/dts/rockchip/rk3576-evb2-v10.dts     | 1004 +++++++++++++++++
 3 files changed, 1008 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts

-- 
2.51.1

[PATCH v4 1/2] dt-bindings: arm: rockchip: Add rk3576 evb2 board

[Chaoyi Chen]

From: Chaoyi Chen <chaoyi.chen@rock-chips.com>

Add devicetree binding for the rk3576 evb2 board.

Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
---
(no changes since v1)
---
 Documentation/devicetree/bindings/arm/rockchip.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index 6aceaa8acbb2..59ed57082003 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -1136,7 +1136,9 @@ properties:

       - description: Rockchip RK3576 Evaluation board
         items:
-          - const: rockchip,rk3576-evb1-v10
+          - enum:
+              - rockchip,rk3576-evb1-v10
+              - rockchip,rk3576-evb2-v10
           - const: rockchip,rk3576

       - description: Rockchip RK3588 Evaluation board
--
2.51.1

[PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Chaoyi Chen]

From: Chaoyi Chen <chaoyi.chen@rock-chips.com>

General features for rk3576 evb2 board:
    - Rockchip RK3576
    - LPDDR4/4X
    - eMMC5.1
    - RK806-2x2pcs + DiscretePower
    - 1x HDMI2.1 TX / HDMI2.0 RX
    - 1x full size DP1.4 TX (Only 2 Lanes)
    - 2x 10/100/1000M Ethernet
    - 5x SATA3.0 7Pin Slot
    - 2x USB3.2 Gen1 Host
    - 3x USB2.0 Host
    - WIFI/BT
    - ...

Tested with eMMC/SDMMC/HDMI/USB/Ethernet/WIFI/BT module.

Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Reviewed-by: Alexey Charkov <alchark@gmail.com>
---
Changes in v4:
- Fix supply and reset for usb hub.
- Add cd-gpios for sdmmc.

Changes in v3:
- Add alias for mmc.
- Rename some usb vbus regulator.
- Add DP regulator.
- Change gmac phy-mode to rgmii-id.
- Add target-supply for sata.
- Change vcc-supply for ufshc.
- Add usb hub.
- ...

Changes in v2:
- Enable hdmi_sound and sai6.
- Add more cpu-supply.
- Use regulator to control sata power.
- Remove "cap-mmc-highspeed" prop in sdmmc.
- Add regulator supply for ufshc.
- Add the missing vcc3v3_hubreset regulator.
- Add otg capability for usb_drd0_dwc3.
---
 arch/arm64/boot/dts/rockchip/Makefile         |    1 +
 .../boot/dts/rockchip/rk3576-evb2-v10.dts     | 1004 +++++++++++++++++
 2 files changed, 1005 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index c7617e06e1c1..cff95657d406 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -153,6 +153,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5-v1.2-wifibt.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb2-v10.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-luckfox-omni3576.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-nanopi-m5.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-roc-pc.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts
new file mode 100644
index 000000000000..078298717850
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts
@@ -0,0 +1,1004 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2026 Rockchip Electronics Co., Ltd.
+ *
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/soc/rockchip,vop2.h>
+#include "rk3576.dtsi"
+
+/ {
+	model = "Rockchip RK3576 EVB2 V10 Board";
+	compatible = "rockchip,rk3576-evb2-v10", "rockchip,rk3576";
+
+	aliases {
+		ethernet0 = &gmac0;
+		ethernet1 = &gmac1;
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+
+	hdmi-con {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
+
+	keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 1>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1800000>;
+		poll-interval = <100>;
+
+		button-back {
+			label = "back";
+			linux,code = <KEY_BACK>;
+			press-threshold-microvolt = <1235000>;
+		};
+
+		button-menu {
+			label = "menu";
+			linux,code = <KEY_MENU>;
+			press-threshold-microvolt = <890000>;
+		};
+
+		button-vol-down {
+			label = "volume down";
+			linux,code = <KEY_VOLUMEDOWN>;
+			press-threshold-microvolt = <417000>;
+		};
+
+		button-vol-up {
+			label = "volume up";
+			linux,code = <KEY_VOLUMEUP>;
+			press-threshold-microvolt = <17000>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		work_led: led-0 {
+			gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_pwren>;
+
+		/*
+		 * On the module itself this is one of these (depending
+		 * on the actual card populated):
+		 * - SDIO_RESET_L_WL_REG_ON
+		 * - PDN (power down when low)
+		 */
+		post-power-on-delay-ms = <200>;
+		reset-gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>;
+	};
+
+	vbus5v0_usb0: regulator-vbus5v0-usb0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_usb3_host0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		enable-active-high;
+		gpio = <&gpio0 RK_PD1 GPIO_ACTIVE_HIGH>;
+		vin-supply = <&vcc5v0_device>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_otg0_pwren>;
+	};
+
+	vbus5v0_usb1: regulator-vcc5v0-usb1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_usb3_host1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		enable-active-high;
+		gpio = <&gpio0 RK_PC3 GPIO_ACTIVE_HIGH>;
+		vin-supply = <&vcc5v0_device>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_host_pwren>;
+	};
+
+	vcc12v_dcin: regulator-vcc12v-dcin {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc12v_dcin";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+	};
+
+	vcc1v2_ufs_vccq_s0: regulator-vcc1v2-ufs-vccq-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc1v2_ufs_vccq_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&vcc_sys>;
+	};
+
+	vcc1v8_ufs_vccq2_s0: regulator-vcc1v8-ufs-vccq2-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc1v8_ufs_vccq2_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_1v8_s3>;
+	};
+
+	vcc3v3_dp_port: regulator-vcc3v3-dp-port {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_dp_port";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpios = <&gpio0 RK_PC2 GPIO_ACTIVE_HIGH>;
+		vin-supply = <&vcc_3v3_s3>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&image_pwren>;
+	};
+
+	vcc3v3_pcie1: regulator-vcc3v3-pcie1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_pcie1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc12v_dcin>;
+	};
+
+	vcc3v3_rtc_s5: regulator-vcc3v3-rtc-s5 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_rtc_s5";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_sys>;
+	};
+
+	vcc3v3_sata_pwren: vcc3v3-sata-pwren {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_satapm";
+		enable-active-high;
+		gpio = <&gpio4 RK_PC7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&satapm_pwren>;
+	};
+
+	vcc5v0_device: regulator-vcc5v0-device {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_device";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc12v_dcin>;
+	};
+
+	vcc_sys: regulator-vcc5v0-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc12v_dcin>;
+	};
+
+	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_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_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_sys>;
+	};
+
+	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_ufs_s0: regulator-vcc-ufs-s0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_ufs_s0";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_sys>;
+	};
+};
+
+&cpu_l0 {
+	cpu-supply = <&vdd_cpu_lit_s0>;
+};
+
+&cpu_l1 {
+	cpu-supply = <&vdd_cpu_lit_s0>;
+};
+
+&cpu_l2 {
+	cpu-supply = <&vdd_cpu_lit_s0>;
+};
+
+&cpu_l3 {
+	cpu-supply = <&vdd_cpu_lit_s0>;
+};
+
+&cpu_b0 {
+	cpu-supply = <&vdd_cpu_big_s0>;
+};
+
+&cpu_b1 {
+	cpu-supply = <&vdd_cpu_big_s0>;
+};
+
+&cpu_b2 {
+	cpu-supply = <&vdd_cpu_big_s0>;
+};
+
+&cpu_b3 {
+	cpu-supply = <&vdd_cpu_big_s0>;
+};
+
+&combphy0_ps {
+	status = "okay";
+};
+
+&combphy1_psu {
+	status = "okay";
+};
+
+&gmac0 {
+	clock_in_out = "output";
+	phy-mode = "rgmii-id";
+	phy-handle = <&rgmii_phy0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&eth0m1_miim
+		     &eth0m1_tx_bus2
+		     &eth0m1_rx_bus2
+		     &eth0m1_rgmii_clk
+		     &eth0m1_rgmii_bus>;
+	status = "okay";
+};
+
+&gmac1 {
+	clock_in_out = "output";
+	phy-handle = <&rgmii_phy1>;
+	phy-mode = "rgmii-id";
+	pinctrl-names = "default";
+	pinctrl-0 = <&eth1m0_miim
+		     &eth1m0_tx_bus2
+		     &eth1m0_rx_bus2
+		     &eth1m0_rgmii_clk
+		     &eth1m0_rgmii_bus>;
+	status = "okay";
+};
+
+&gpu {
+	mali-supply = <&vdd_gpu_s0>;
+	status = "okay";
+};
+
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_in {
+	hdmi_in_vp0: endpoint {
+		remote-endpoint = <&vp0_out_hdmi>;
+	};
+};
+
+&hdmi_out {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
+};
+
+&hdmi_sound {
+	status = "okay";
+};
+
+&hdptxphy {
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+
+	rk806: pmic@23 {
+		compatible = "rockchip,rk806";
+		reg = <0x23>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_pins>, <&rk806_dvs1_null>,
+			    <&rk806_dvs2_null>, <&rk806_dvs3_null>;
+		system-power-controller;
+
+		vcc1-supply = <&vcc_sys>;
+		vcc2-supply = <&vcc_sys>;
+		vcc3-supply = <&vcc_sys>;
+		vcc4-supply = <&vcc_sys>;
+		vcc5-supply = <&vcc_sys>;
+		vcc6-supply = <&vcc_sys>;
+		vcc7-supply = <&vcc_sys>;
+		vcc8-supply = <&vcc_sys>;
+		vcc9-supply = <&vcc_sys>;
+		vcc10-supply = <&vcc_sys>;
+		vcc11-supply = <&vcc_2v0_pldo_s3>;
+		vcc12-supply = <&vcc_sys>;
+		vcc13-supply = <&vcc_1v1_nldo_s3>;
+		vcc14-supply = <&vcc_1v1_nldo_s3>;
+		vcca-supply = <&vcc_sys>;
+
+		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 = <550000>;
+				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-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_PA5 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rtc_int>;
+		wakeup-source;
+		#clock-cells = <0>;
+	};
+};
+
+&mdio0 {
+	rgmii_phy0: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0x1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rgmii_phy0_rst>;
+		reset-assert-us = <20000>;
+		reset-deassert-us = <100000>;
+		reset-gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
+		tx-internal-delay-ps = <1900>;
+	};
+};
+
+&mdio1 {
+	rgmii_phy1: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0x1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rgmii_phy1_rst>;
+		reset-assert-us = <20000>;
+		reset-deassert-us = <100000>;
+		reset-gpios = <&gpio3 RK_PD6 GPIO_ACTIVE_LOW>;
+		tx-internal-delay-ps = <1900>;
+	};
+};
+
+&pinctrl {
+	bluetooth {
+		bt_reg_on: bt-reg-on {
+			rockchip,pins = <1 RK_PC7 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		bt_wake_host: bt-wake-host {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		host_wake_bt: host-wake-bt {
+			rockchip,pins = <1 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	dp {
+		image_pwren: image-pwren {
+			rockchip,pins = <0 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	hym8563 {
+		rtc_int: rtc-int {
+			rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	network {
+		rgmii_phy0_rst: rgmii-phy0-rst {
+			rockchip,pins = <3 RK_PD3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		rgmii_phy1_rst: rgmii-phy1-rst {
+			rockchip,pins = <3 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	pcie1 {
+		pcie1_rst: pcie1-rst {
+			rockchip,pins = <4 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	sata {
+		satapm_pwren: satapm-pwren {
+			rockchip,pins = <4 RK_PC7 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+	};
+
+	usb {
+		usb_host_pwren: usb-host-pwren {
+			rockchip,pins = <0 RK_PC3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		usb_hub_reset: usb-hub-reset {
+			rockchip,pins = <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		usb_otg0_pwren: usb-otg0-pwren {
+			rockchip,pins = <0 RK_PD1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	wifi {
+		wifi_host_wake: wifi-host-wake {
+			rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		wifi_pwren: wifi-pwren {
+			rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
+&sai6 {
+	status = "okay";
+};
+
+&saradc {
+	vref-supply = <&vcca_1v8_s0>;
+	status = "okay";
+};
+
+&sata0 {
+	target-supply = <&vcc3v3_sata_pwren>;
+	status = "okay";
+};
+
+&sdio {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	disable-wp;
+	keep-power-in-suspend;
+	max-frequency = <150000000>;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	no-sd;
+	no-mmc;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc1m0_bus4 &sdmmc1m0_clk &sdmmc1m0_cmd>;
+	sd-uhs-sdr104;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PB0 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "host-wake";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_host_wake>;
+	};
+};
+
+&sdhci {
+	bus-width = <8>;
+	full-pwr-cycle-in-suspend;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+	no-sdio;
+	no-sd;
+	non-removable;
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
+	disable-wp;
+	no-sdio;
+	no-mmc;
+	sd-uhs-sdr104;
+	vqmmc-supply = <&vccio_sd_s0>;
+	status = "okay";
+};
+
+&u2phy0 {
+	status = "okay";
+};
+
+&u2phy0_otg {
+	phy-supply = <&vbus5v0_usb0>;
+	status = "okay";
+};
+
+&u2phy1 {
+	status = "okay";
+};
+
+&u2phy1_otg {
+	phy-supply = <&vbus5v0_usb1>;
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart4 {
+	pinctrl-0 = <&uart4m1_xfer &uart4m1_ctsn &uart4m1_rtsn>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&hym8563>;
+		clock-names = "lpo";
+		device-wakeup-gpios = <&gpio1 RK_PD4 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PB1 IRQ_TYPE_LEVEL_HIGH>;
+		pinctrl-0 = <&bt_reg_on &bt_wake_host &host_wake_bt>;
+		pinctrl-names = "default";
+		shutdown-gpios = <&gpio1 RK_PC7 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&vcc_3v3_s3>;
+		vddio-supply = <&vcc_1v8_s3>;
+	};
+};
+
+&ufshc {
+	vcc-supply = <&vcc_ufs_s0>;
+	vccq-supply = <&vcc1v2_ufs_vccq_s0>;
+	vccq2-supply = <&vcc1v8_ufs_vccq2_s0>;
+	status = "okay";
+};
+
+&usbdp_phy {
+	rockchip,dp-lane-mux = <2 3>;
+	status = "okay";
+};
+
+&usb_drd0_dwc3 {
+	dr_mode = "otg";
+	extcon = <&u2phy0>;
+	status = "okay";
+};
+
+&usb_drd1_dwc3 {
+	dr_mode = "host";
+	pinctrl-names = "default";
+	pinctrl-0 = <&usb_hub_reset>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_2_0: hub@1 {
+		compatible = "usb1a86,8091";
+		reg = <1>;
+		reset-gpio = <&gpio0 RK_PC5 GPIO_ACTIVE_LOW>;
+		v5-supply = <&vcc_3v3_s0>;
+		vdd33-supply = <&vcc_3v3_s0>;
+	};
+};
+
+&vop {
+	status = "okay";
+};
+
+&vop_mmu {
+	status = "okay";
+};
+
+&vp0 {
+	vp0_out_hdmi: endpoint@ROCKCHIP_VOP2_EP_HDMI0 {
+		reg = <ROCKCHIP_VOP2_EP_HDMI0>;
+		remote-endpoint = <&hdmi_in_vp0>;
+	};
+};
--
2.51.1

Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Shawn Lin]

在 2026/01/21 星期三 9:53, Chaoyi Chen 写道:
> From: Chaoyi Chen <chaoyi.chen@rock-chips.com>
> 
> General features for rk3576 evb2 board:
>      - Rockchip RK3576
>      - LPDDR4/4X
>      - eMMC5.1
>      - RK806-2x2pcs + DiscretePower
>      - 1x HDMI2.1 TX / HDMI2.0 RX
>      - 1x full size DP1.4 TX (Only 2 Lanes)
>      - 2x 10/100/1000M Ethernet
>      - 5x SATA3.0 7Pin Slot
>      - 2x USB3.2 Gen1 Host
>      - 3x USB2.0 Host
>      - WIFI/BT
>      - ...
> 
> Tested with eMMC/SDMMC/HDMI/USB/Ethernet/WIFI/BT module.
> 
> Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
> Reviewed-by: Alexey Charkov <alchark@gmail.com>
> ---

---8<----

> +
> +&sdio {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	bus-width = <4>;
> +	cap-sd-highspeed;
> +	cap-sdio-irq;
> +	disable-wp;

disable-wp is not used for SDIO case, could be removed.


> +	keep-power-in-suspend;
> +	max-frequency = <150000000>;
> +	mmc-pwrseq = <&sdio_pwrseq>;
> +	no-sd;
> +	no-mmc;
> +	non-removable;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdmmc1m0_bus4 &sdmmc1m0_clk &sdmmc1m0_cmd>;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +
> +	brcmf: wifi@1 {
> +		compatible = "brcm,bcm4329-fmac";
> +		reg = <1>;
> +		interrupt-parent = <&gpio0>;
> +		interrupts = <RK_PB0 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "host-wake";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&wifi_host_wake>;
> +	};
> +};
> +
> +&sdhci {
> +	bus-width = <8>;
> +	full-pwr-cycle-in-suspend;
> +	mmc-hs400-1_8v;
> +	mmc-hs400-enhanced-strobe;
> +	no-sdio;
> +	no-sd;
> +	non-removable;
> +	status = "okay";
> +};
> +
> +&sdmmc {
> +	bus-width = <4>;
> +	cap-sd-highspeed;
> +	cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
> +	disable-wp;
> +	no-sdio;
> +	no-mmc;
> +	sd-uhs-sdr104;
> +	vqmmc-supply = <&vccio_sd_s0>;

Should use vmmc-supply to contrl the power, the same as EVB1[1].

[1] 
https://lore.kernel.org/linux-rockchip/1768524932-163929-5-git-send-email-shawn.lin@rock-chips.com/T/#u

> +	status = "okay";
> +};
> +
> +&u2phy0 {
> +	status = "okay";
> +};
> +

Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Chaoyi Chen]

Hi Shawn,

On 1/21/2026 10:09 AM, Shawn Lin wrote:
> 在 2026/01/21 星期三 9:53, Chaoyi Chen 写道:
>> From: Chaoyi Chen <chaoyi.chen@rock-chips.com>
>>
>> General features for rk3576 evb2 board:
>>      - Rockchip RK3576
>>      - LPDDR4/4X
>>      - eMMC5.1
>>      - RK806-2x2pcs + DiscretePower
>>      - 1x HDMI2.1 TX / HDMI2.0 RX
>>      - 1x full size DP1.4 TX (Only 2 Lanes)
>>      - 2x 10/100/1000M Ethernet
>>      - 5x SATA3.0 7Pin Slot
>>      - 2x USB3.2 Gen1 Host
>>      - 3x USB2.0 Host
>>      - WIFI/BT
>>      - ...
>>
>> Tested with eMMC/SDMMC/HDMI/USB/Ethernet/WIFI/BT module.
>>
>> Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
>> Reviewed-by: Alexey Charkov <alchark@gmail.com>
>> ---
> 
> ---8<----
> 
>> +
>> +&sdio {
>> +    #address-cells = <1>;
>> +    #size-cells = <0>;
>> +    bus-width = <4>;
>> +    cap-sd-highspeed;
>> +    cap-sdio-irq;
>> +    disable-wp;
> 
> disable-wp is not used for SDIO case, could be removed.
> 
> 

Will fix in v5.

>> +    keep-power-in-suspend;
>> +    max-frequency = <150000000>;
>> +    mmc-pwrseq = <&sdio_pwrseq>;
>> +    no-sd;
>> +    no-mmc;
>> +    non-removable;
>> +    pinctrl-names = "default";
>> +    pinctrl-0 = <&sdmmc1m0_bus4 &sdmmc1m0_clk &sdmmc1m0_cmd>;
>> +    sd-uhs-sdr104;
>> +    status = "okay";
>> +
>> +    brcmf: wifi@1 {
>> +        compatible = "brcm,bcm4329-fmac";
>> +        reg = <1>;
>> +        interrupt-parent = <&gpio0>;
>> +        interrupts = <RK_PB0 IRQ_TYPE_LEVEL_HIGH>;
>> +        interrupt-names = "host-wake";
>> +        pinctrl-names = "default";
>> +        pinctrl-0 = <&wifi_host_wake>;
>> +    };
>> +};
>> +
>> +&sdhci {
>> +    bus-width = <8>;
>> +    full-pwr-cycle-in-suspend;
>> +    mmc-hs400-1_8v;
>> +    mmc-hs400-enhanced-strobe;
>> +    no-sdio;
>> +    no-sd;
>> +    non-removable;
>> +    status = "okay";
>> +};
>> +
>> +&sdmmc {
>> +    bus-width = <4>;
>> +    cap-sd-highspeed;
>> +    cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
>> +    disable-wp;
>> +    no-sdio;
>> +    no-mmc;
>> +    sd-uhs-sdr104;
>> +    vqmmc-supply = <&vccio_sd_s0>;
> 
> Should use vmmc-supply to contrl the power, the same as EVB1[1].
> 
> [1] https://lore.kernel.org/linux-rockchip/1768524932-163929-5-git-send-email-shawn.lin@rock-chips.com/T/#u
> 

That make sense. Will fix in v5.

>> +    status = "okay";
>> +};
>> +
>> +&u2phy0 {
>> +    status = "okay";
>> +};
>> +
> 
> 
> 
> 

-- 
Best, 
Chaoyi

Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Andrew Lunn]

> +&mdio0 {
> +	rgmii_phy0: ethernet-phy@1 {
> +		compatible = "ethernet-phy-ieee802.3-c22";
> +		reg = <0x1>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&rgmii_phy0_rst>;
> +		reset-assert-us = <20000>;
> +		reset-deassert-us = <100000>;
> +		reset-gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
> +		tx-internal-delay-ps = <1900>;

What PHY is this? Does it actually implement this property?

It is also close to the 2000ps default. Have you put the board in an
environment chamber and run tests at -20C to +70C to see if it will
work with the default 2000ps?

     Andrew

Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Chaoyi Chen]

Hi Andrew,

On 1/21/2026 9:15 PM, Andrew Lunn wrote:
>> +&mdio0 {
>> +	rgmii_phy0: ethernet-phy@1 {
>> +		compatible = "ethernet-phy-ieee802.3-c22";
>> +		reg = <0x1>;
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&rgmii_phy0_rst>;
>> +		reset-assert-us = <20000>;
>> +		reset-deassert-us = <100000>;
>> +		reset-gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
>> +		tx-internal-delay-ps = <1900>;
> 
> What PHY is this? Does it actually implement this property?
> 
> It is also close to the 2000ps default. Have you put the board in an
> environment chamber and run tests at -20C to +70C to see if it will
> work with the default 2000ps?
>

It is MotorComm yt8xxx PHY. I chose 1950 here because I find that
the MotorComm PHY binding only offer the options of 1950 or 2100. 

-- 
Best, 
Chaoyi

Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

[Andrew Lunn]

On Thu, Jan 22, 2026 at 09:41:19AM +0800, Chaoyi Chen wrote:
> Hi Andrew,
> 
> On 1/21/2026 9:15 PM, Andrew Lunn wrote:
> >> +&mdio0 {
> >> +	rgmii_phy0: ethernet-phy@1 {
> >> +		compatible = "ethernet-phy-ieee802.3-c22";
> >> +		reg = <0x1>;
> >> +		pinctrl-names = "default";
> >> +		pinctrl-0 = <&rgmii_phy0_rst>;
> >> +		reset-assert-us = <20000>;
> >> +		reset-deassert-us = <100000>;
> >> +		reset-gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
> >> +		tx-internal-delay-ps = <1900>;
> > 
> > What PHY is this? Does it actually implement this property?
> > 
> > It is also close to the 2000ps default. Have you put the board in an
> > environment chamber and run tests at -20C to +70C to see if it will
> > work with the default 2000ps?
> >
> 
> It is MotorComm yt8xxx PHY. I chose 1950 here because I find that
> the MotorComm PHY binding only offer the options of 1950 or 2100. 

Without the property it should default to something near to 2000. Most
MAC/PHY pairs should work without this property, if the board is
designed correctly. So i suggest you only have a tx-internal-delay-ps
if it is required.

   Andrew