--- /dev/null
+From dca5896703826d0d5fadcc11ee755b83db705571 Mon Sep 17 00:00:00 2001
+From: Chukun Pan <amadeus@jmu.edu.cn>
+Date: Mon, 1 Dec 2025 18:00:06 +0800
+Subject: [PATCH] arm64: dts: rockchip: Add HINLINK H28K
+
+The HINLINK H28K is a development board with the
+Rockchip RK3528 SoC. It has the following features:
+
+- 1x USB 2.0
+- 8/32GB eMMC
+- 1/2/4GB LPDDR4
+- MicroSD card slot
+- 1x 1GbE RTL8111H Ethernet
+- 1x 1GbE RTL8211F Ethernet
+
+Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
+---
+ arch/arm64/boot/dts/rockchip/Makefile | 1 +
+ .../boot/dts/rockchip/rk3528-hinlink-h28k.dts | 301 ++++++++++++++++++
+ 2 files changed, 302 insertions(+)
+ create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-hinlink-h28k.dts
+
+--- a/arch/arm64/boot/dts/rockchip/Makefile
++++ b/arch/arm64/boot/dts/rockchip/Makefile
+@@ -76,6 +76,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-ro
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-rock-pi-n10.dtb
++dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3528-hinlink-h28k.dtb
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3528-radxa-e20c.dtb
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3528-rock-2a.dtb
+ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3528-rock-2f.dtb
+--- /dev/null
++++ b/arch/arm64/boot/dts/rockchip/rk3528-hinlink-h28k.dts
+@@ -0,0 +1,318 @@
++// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
++
++/dts-v1/;
++
++#include <dt-bindings/input/input.h>
++#include <dt-bindings/leds/common.h>
++#include <dt-bindings/pwm/pwm.h>
++#include "rk3528.dtsi"
++
++/ {
++ model = "HINLINK H28K";
++ compatible = "hinlink,h28k", "rockchip,rk3528";
++
++ aliases {
++ ethernet0 = &gmac1;
++ mmc0 = &sdhci;
++ mmc1 = &sdmmc;
++ serial0 = &uart0;
++ };
++
++ chosen {
++ stdout-path = "serial0:1500000n8";
++ };
++
++ keys {
++ compatible = "adc-keys";
++ io-channels = <&saradc 0>;
++ io-channel-names = "buttons";
++ keyup-threshold-microvolt = <1800000>;
++ poll-interval = <100>;
++
++ button-boot {
++ label = "BOOT";
++ linux,code = <KEY_SETUP>;
++ press-threshold-microvolt = <0>;
++ };
++ };
++
++ leds {
++ compatible = "gpio-leds";
++ pinctrl-names = "default";
++ pinctrl-0 = <&lan_led>, <&wan_led>, <&work_led>;
++
++ led-0 {
++ color = <LED_COLOR_ID_AMBER>;
++ function = LED_FUNCTION_LAN;
++ gpios = <&gpio4 RK_PC1 GPIO_ACTIVE_LOW>;
++ linux,default-trigger = "netdev";
++ };
++
++ led-1 {
++ color = <LED_COLOR_ID_BLUE>;
++ function = LED_FUNCTION_WAN;
++ gpios = <&gpio4 RK_PC0 GPIO_ACTIVE_LOW>;
++ linux,default-trigger = "netdev";
++ };
++
++ led-2 {
++ color = <LED_COLOR_ID_GREEN>;
++ function = LED_FUNCTION_STATUS;
++ gpios = <&gpio4 RK_PB7 GPIO_ACTIVE_LOW>;
++ linux,default-trigger = "default-on";
++ };
++ };
++
++ vdd_0v9: regulator-0v9-vdd {
++ compatible = "regulator-fixed";
++ regulator-name = "vdd_0v9";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <900000>;
++ regulator-max-microvolt = <900000>;
++ vin-supply = <&vcc5v0_sys>;
++ };
++
++ vcc_ddr: regulator-1v1-vcc-ddr {
++ compatible = "regulator-fixed";
++ regulator-name = "vcc_ddr";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <1100000>;
++ regulator-max-microvolt = <1100000>;
++ vin-supply = <&vcc5v0_sys>;
++ };
++
++ vcc_1v8: regulator-1v8-vcc {
++ compatible = "regulator-fixed";
++ regulator-name = "vcc_1v8";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <1800000>;
++ regulator-max-microvolt = <1800000>;
++ vin-supply = <&vcc_3v3>;
++ };
++
++ vcc_3v3: regulator-3v3-vcc {
++ compatible = "regulator-fixed";
++ regulator-name = "vcc_3v3";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <3300000>;
++ regulator-max-microvolt = <3300000>;
++ vin-supply = <&vcc5v0_sys>;
++ };
++
++ vcc3v3_sd: regulator-3v3-vcc-sd {
++ compatible = "regulator-fixed";
++ gpios = <&gpio4 RK_PA1 GPIO_ACTIVE_LOW>;
++ pinctrl-names = "default";
++ pinctrl-0 = <&sdmmc_pwren_l>;
++ regulator-name = "vcc3v3_sd";
++ regulator-min-microvolt = <3300000>;
++ regulator-max-microvolt = <3300000>;
++ vin-supply = <&vcc_3v3>;
++ };
++
++ vcc5v0_sys: regulator-5v0-vcc-sys {
++ compatible = "regulator-fixed";
++ regulator-name = "vcc5v0_sys";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <5000000>;
++ regulator-max-microvolt = <5000000>;
++ };
++
++ vccio_sd: regulator-vccio-sd {
++ compatible = "regulator-gpio";
++ gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
++ pinctrl-names = "default";
++ pinctrl-0 = <&sdmmc_vol_ctrl_h>;
++ regulator-name = "vccio_sd";
++ regulator-min-microvolt = <1800000>;
++ regulator-max-microvolt = <3300000>;
++ states = <1800000 0x0>, <3300000 0x1>;
++ vin-supply = <&vcc5v0_sys>;
++ };
++
++ vdd_arm: regulator-vdd-arm {
++ compatible = "pwm-regulator";
++ pwms = <&pwm1 0 5000 PWM_POLARITY_INVERTED>;
++ pwm-supply = <&vcc5v0_sys>;
++ regulator-name = "vdd_arm";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <746000>;
++ regulator-max-microvolt = <1201000>;
++ regulator-settling-time-up-us = <250>;
++ };
++
++ vdd_logic: regulator-vdd-logic {
++ compatible = "pwm-regulator";
++ pwms = <&pwm2 0 5000 PWM_POLARITY_INVERTED>;
++ pwm-supply = <&vcc5v0_sys>;
++ regulator-name = "vdd_logic";
++ regulator-always-on;
++ regulator-boot-on;
++ regulator-min-microvolt = <705000>;
++ regulator-max-microvolt = <1006000>;
++ regulator-settling-time-up-us = <250>;
++ };
++};
++
++&combphy {
++ status = "okay";
++};
++
++&cpu0 {
++ cpu-supply = <&vdd_arm>;
++};
++
++&cpu1 {
++ cpu-supply = <&vdd_arm>;
++};
++
++&cpu2 {
++ cpu-supply = <&vdd_arm>;
++};
++
++&cpu3 {
++ cpu-supply = <&vdd_arm>;
++};
++
++&gmac1 {
++ clock_in_out = "output";
++ phy-handle = <&rgmii_phy>;
++ phy-mode = "rgmii-id";
++ phy-supply = <&vcc_3v3>;
++ pinctrl-names = "default";
++ pinctrl-0 = <&rgmii_miim>,
++ <&rgmii_tx_bus2>,
++ <&rgmii_rx_bus2>,
++ <&rgmii_rgmii_clk>,
++ <&rgmii_rgmii_bus>;
++ status = "okay";
++};
++
++&gpu {
++ mali-supply = <&vdd_logic>;
++ status = "okay";
++};
++
++&mdio1 {
++ rgmii_phy: ethernet-phy@1 {
++ compatible = "ethernet-phy-ieee802.3-c22";
++ reg = <0x1>;
++ pinctrl-names = "default";
++ pinctrl-0 = <&gmac1_rstn_l>;
++ reset-assert-us = <20000>;
++ reset-deassert-us = <100000>;
++ reset-gpios = <&gpio4 RK_PC2 GPIO_ACTIVE_LOW>;
++ };
++};
++
++&pcie {
++ pinctrl-names = "default";
++ pinctrl-0 = <&rtl8111hs_isolateb_l>;
++ reset-gpios = <&gpio4 RK_PA3 GPIO_ACTIVE_HIGH>;
++ vpcie3v3-supply = <&vcc_3v3>;
++ status = "okay";
++};
++
++&pinctrl {
++ gmac {
++ gmac1_rstn_l: gmac1-rstn-l {
++ rockchip,pins = <4 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++ };
++
++ leds {
++ lan_led: lan-led {
++ rockchip,pins = <4 RK_PC1 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++
++ wan_led: wan-led {
++ rockchip,pins = <4 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++
++ work_led: work-led {
++ rockchip,pins = <4 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++ };
++
++ pcie {
++ rtl8111hs_isolateb_l: rtl8111hs-isolateb-l {
++ rockchip,pins = <4 RK_PA6 RK_FUNC_GPIO &pcfg_pull_up>;
++ };
++ };
++
++ sdmmc {
++ sdmmc_pwren_l: sdmmc-pwren-l {
++ rockchip,pins = <4 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++
++ sdmmc_vol_ctrl_h: sdmmc-vol-ctrl-h {
++ rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
++ };
++ };
++};
++
++&pwm1 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&pwm1m0_pins>;
++ status = "okay";
++};
++
++&pwm2 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&pwm2m0_pins>;
++ status = "okay";
++};
++
++&saradc {
++ vref-supply = <&vcc_1v8>;
++ status = "okay";
++};
++
++&sdhci {
++ bus-width = <8>;
++ cap-mmc-highspeed;
++ mmc-hs200-1_8v;
++ non-removable;
++ vmmc-supply = <&vcc_3v3>;
++ vqmmc-supply = <&vcc_1v8>;
++ status = "okay";
++};
++
++&sdmmc {
++ bus-width = <4>;
++ cap-sd-highspeed;
++ disable-wp;
++ sd-uhs-sdr104;
++ vmmc-supply = <&vcc3v3_sd>;
++ vqmmc-supply = <&vccio_sd>;
++ status = "okay";
++};
++
++&uart0 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart0m0_xfer>;
++ status = "okay";
++};
++
++&usb2phy {
++ status = "okay";
++};
++
++&usb2phy_host {
++ phy-supply = <&vcc5v0_sys>;
++ status = "okay";
++};
++
++&usb_host0_ehci {
++ status = "okay";
++};
++
++&usb_host0_ohci {
++ status = "okay";
++};