The hardware is described in detail on Kobol's wiki at
https://wiki.kobol.io/helios64/intro/.

Up to now the following peripherals are working:

 - UART
 - Micro-SD card
 - eMMC
 - ethernet port 1
 - status LED
 - temperature sensor on i2c bus 2

Signed-off-by: Uwe Kleine-König <u...@kleine-koenig.org>
---
 arch/arm64/boot/dts/rockchip/Makefile         |   1 +
 .../dts/rockchip/rk3399-kobol-helios64.dts    | 371 ++++++++++++++++++
 2 files changed, 372 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile 
b/arch/arm64/boot/dts/rockchip/Makefile
index b87b1f773083..ddf07c5e5f7c 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -24,6 +24,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-hugsun-x99.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-captain.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-v.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-kobol-helios64.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-leez-p710.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts 
b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
new file mode 100644
index 000000000000..9d970b590f9b
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
@@ -0,0 +1,371 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2020 Aditya Prayoga <adi...@kobol.io>
+ */
+
+/*
+ * The Kobol Helios64 is a board designed to operate as a NAS and optionally
+ * ships with an enclosing that can host five 2.5" hard disks.
+ *
+ * See https://wiki.kobol.io/helios64/intro/ for further details.
+ */
+
+/dts-v1/;
+#include "rk3399.dtsi"
+#include "rk3399-opp.dtsi"
+
+/ {
+       model = "Kobol Helios64";
+       compatible = "kobol,helios64", "rockchip,rk3399";
+
+       avdd_1v8_s0: avdd-1v8-s0 {
+               compatible = "regulator-fixed";
+               regulator-name = "avdd_1v8_s0";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               vin-supply = <&vcc3v3_sys_s3>;
+       };
+
+       clkin_gmac: external-gmac-clock {
+               compatible = "fixed-clock";
+               clock-frequency = <125000000>;
+               clock-output-names = "clkin_gmac";
+               #clock-cells = <0>;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               pinctrl-names = "default";
+               pinctrl-0 = <&sys_grn_led_on &sys_red_led_on>;
+
+               led-0 {
+                       label = "helios64:green:status";
+                       gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
+                       default-state = "on";
+               };
+
+               led-1 {
+                       label = "helios64:red:fault";
+                       gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
+                       default-state = "keep";
+               };
+       };
+
+       vcc1v8_sys_s0: vcc1v8-sys-s0 {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc1v8_sys_s0";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               vin-supply = <&vcc1v8_sys_s3>;
+       };
+
+       vcc3v0_sd: vcc3v0-sd {
+               compatible = "regulator-fixed";
+               enable-active-high;
+               gpio = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>;
+               regulator-name = "vcc3v0_sd";
+               regulator-boot-on;
+               regulator-min-microvolt = <3000000>;
+               regulator-max-microvolt = <3000000>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&sdmmc0_pwr_h>;
+               vin-supply = <&vcc3v3_sys_s3>;
+       };
+
+       vcc3v3_sys_s3: vcc_lan: vcc3v3-sys-s3 {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc3v3_sys_s3";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               vin-supply = <&vcc5v0_sys>;
+
+               regulator-state-mem {
+                       regulator-on-in-suspend;
+               };
+       };
+
+       vcc5v0_sys: vcc5v0-sys {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc5v0_sys";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               vin-supply = <&vcc12v_dcin_bkup>;
+
+               regulator-state-mem {
+                       regulator-on-in-suspend;
+               };
+       };
+
+       vcc12v_dcin: vcc12v-dcin {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc12v_dcin";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+       };
+
+       vcc12v_dcin_bkup: vcc12v-dcin-bkup {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc12v_dcin_bkup";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               vin-supply = <&vcc12v_dcin>;
+       };
+};
+
+/*
+ * The system doesn't run stable with cpu freq enabled, so disallow the lower
+ * frequencies until this problem is properly understood and resolved.
+ */
+&cluster0_opp {
+        /delete-node/ opp00;
+        /delete-node/ opp01;
+        /delete-node/ opp02;
+        /delete-node/ opp03;
+        /delete-node/ opp04;
+};
+&cluster1_opp {
+        /delete-node/ opp00;
+        /delete-node/ opp01;
+        /delete-node/ opp02;
+        /delete-node/ opp03;
+        /delete-node/ opp04;
+        /delete-node/ opp05;
+        /delete-node/ opp06;
+};
+
+&cpu_b0 {
+       cpu-supply = <&vdd_cpu_b>;
+};
+
+&cpu_b1 {
+       cpu-supply = <&vdd_cpu_b>;
+};
+
+&cpu_l0 {
+       cpu-supply = <&vdd_cpu_l>;
+};
+
+&cpu_l1 {
+       cpu-supply = <&vdd_cpu_l>;
+};
+
+&cpu_l2 {
+       cpu-supply = <&vdd_cpu_l>;
+};
+
+&cpu_l3 {
+       cpu-supply = <&vdd_cpu_l>;
+};
+
+&emmc_phy {
+       status = "okay";
+};
+
+&gmac {
+       assigned-clock-parents = <&clkin_gmac>;
+       assigned-clocks = <&cru SCLK_RMII_SRC>;
+       clock_in_out = "input";
+       phy-mode = "rgmii";
+       phy-supply = <&vcc_lan>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&rgmii_pins &gphy_reset>;
+       rx_delay = <0x20>;
+       tx_delay = <0x28>;
+       snps,reset-active-low;
+       snps,reset-delays-us = <0 10000 50000>;
+       snps,reset-gpio = <&gpio3 RK_PB7 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};
+
+&i2c0 {
+       clock-frequency = <400000>;
+       i2c-scl-rising-time-ns = <168>;
+       i2c-scl-falling-time-ns = <4>;
+       status = "okay";
+
+       rk808: pmic@1b {
+               compatible = "rockchip,rk808";
+               reg = <0x1b>;
+               interrupt-parent = <&gpio0>;
+               interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
+               clock-output-names = "xin32k", "rk808-clkout2";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pmic_int_l>;
+               vcc1-supply = <&vcc5v0_sys>;
+               vcc2-supply = <&vcc5v0_sys>;
+               vcc3-supply = <&vcc5v0_sys>;
+               vcc4-supply = <&vcc5v0_sys>;
+               vcc6-supply = <&vcc5v0_sys>;
+               vcc7-supply = <&vcc5v0_sys>;
+               vcc8-supply = <&vcc3v3_sys_s3>;
+               vcc9-supply = <&vcc5v0_sys>;
+               vcc10-supply = <&vcc5v0_sys>;
+               vcc11-supply = <&vcc5v0_sys>;
+               vcc12-supply = <&vcc3v3_sys_s3>;
+               vddio-supply = <&vcc3v0_s3>;
+               wakeup-source;
+               #clock-cells = <1>;
+
+               regulators {
+                       vdd_cpu_l: DCDC_REG2 {
+                               regulator-name = "vdd_cpu_l";
+                               regulator-always-on;
+                               regulator-boot-on;
+                               regulator-min-microvolt = <750000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-ramp-delay = <6001>;
+
+                               regulator-state-mem {
+                                       regulator-off-in-suspend;
+                               };
+                       };
+
+                       vcc1v8_sys_s3: DCDC_REG4 {
+                               regulator-name = "vcc1v8_sys_s3";
+                               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>;
+                               };
+                       };
+
+                       vcc_sdio_s0: LDO_REG4 {
+                               regulator-name = "vcc_sdio_s0";
+                               regulator-always-on;
+                               regulator-boot-on;
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <3000000>;
+
+                               regulator-state-mem {
+                                       regulator-on-in-suspend;
+                                       regulator-suspend-microvolt = <3000000>;
+                               };
+                       };
+
+                       vcc3v0_s3: LDO_REG8 {
+                               regulator-name = "vcc3v0_s3";
+                               regulator-always-on;
+                               regulator-boot-on;
+                               regulator-min-microvolt = <3000000>;
+                               regulator-max-microvolt = <3000000>;
+
+                               regulator-state-mem {
+                                       regulator-on-in-suspend;
+                                       regulator-suspend-microvolt = <3000000>;
+                               };
+                       };
+               };
+       };
+
+       vdd_cpu_b: regulator@40 {
+               compatible = "silergy,syr827";
+               reg = <0x40>;
+               fcs,suspend-voltage-selector = <1>;
+               regulator-name = "vdd_cpu_b";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <712500>;
+               regulator-max-microvolt = <1500000>;
+               regulator-ramp-delay = <1000>;
+               vin-supply = <&vcc5v0_sys>;
+
+               regulator-state-mem {
+                       regulator-off-in-suspend;
+               };
+       };
+};
+
+&i2c2 {
+       clock-frequency = <400000>;
+       i2c-scl-rising-time-ns = <160>;
+       i2c-scl-falling-time-ns = <30>;
+       status = "okay";
+
+       temp@4c {
+               compatible = "national,lm75";
+               reg = <0x4c>;
+       };
+};
+
+&io_domains {
+       audio-supply = <&vcc1v8_sys_s0>;
+       bt656-supply = <&vcc1v8_sys_s0>;
+       gpio1830-supply = <&vcc3v0_s3>;
+       sdmmc-supply = <&vcc_sdio_s0>;
+       status = "okay";
+};
+
+&pinctrl {
+       gmac {
+               gphy_reset: gphy-reset {
+                       rockchip,pins = <3 RK_PB7 RK_FUNC_GPIO 
&pcfg_output_low>;
+               };
+       };
+
+       leds {
+               sys_grn_led_on: sys-grn-led-on {
+                       rockchip,pins = <0 RK_PB4 RK_FUNC_GPIO &pcfg_pull_down>;
+               };
+
+               sys_red_led_on: sys-red-led-on {
+                       rockchip,pins = <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_down>;
+               };
+       };
+
+       pmic {
+               pmic_int_l: pmic-int-l {
+                       rockchip,pins = <0 RK_PB2 RK_FUNC_GPIO &pcfg_pull_up>;
+               };
+       };
+
+       vcc3v0-sd {
+               sdmmc0_pwr_h: sdmmc0-pwr-h {
+                       rockchip,pins = <0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_up>;
+               };
+       };
+};
+
+&pmu_io_domains {
+       pmu1830-supply = <&vcc3v0_s3>;
+       status = "okay";
+};
+
+&sdhci {
+       bus-width = <8>;
+       mmc-hs200-1_8v;
+       non-removable;
+       vqmmc-supply = <&vcc1v8_sys_s0>;
+       status = "okay";
+};
+
+&sdmmc {
+       bus-width = <4>;
+       cap-sd-highspeed;
+       cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
+       disable-wp;
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
+       vmmc-supply = <&vcc3v0_sd>;
+       vqmmc-supply = <&vcc_sdio_s0>;
+       status = "okay";
+};
+
+&uart2 {
+       status = "okay";
+};
-- 
2.28.0

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