Subject: [PATCH 3/3] arm64: dts: rockchip: rk3328: Add Radxa ROCK Pi E

From: Chen-Yu Tsai <[email-masked]>
Date: Sun, 10 Jan 2021 11:58:46 +0800

From: Chen-Yu Tsai <[email-masked]>

Radxa ROCK Pi E is a router oriented SBC based on Rockchip's RK3328 SoC.
As the official wiki page puts it, "E for Ethernets".

It features the RK3328 SoC, gigabit and fast Ethernet RJ45 ports, both
directly served by Ethernet controllers in the SoC, a USB 3.0 host port,
a power-only USB type-C port, a 3.5mm headphone jack for audio output,
two LEDs, a 40-pin Raspberry Pi style GPIO header, and optional WiFi+BT
and PoE header.

The board comes in multiple configurations, differing in the amount of
onboard RAM, the level of WiFi+BT (none, 802.11n 2.4GHz, or 802.11ac
2.4 GHz & 5 GHz), and whether PoE is supported or not. These variants
can all share the same device tree.

The USB 2.0 OTG controller is available on the 40-pin header. This is
not enabled in the device tree, since it is possible to use it in a
host-only configuration, or in OTG mode with an extra pin from the
header as the ID pin.

The device tree is based on the one of the Rock64, with various parts
modified to match the ROCK Pi E, and some parts updated to newer styles,
such as the gmac2io node's mdio sub-node.

Add a new device tree file for the new board.

Signed-off-by: Chen-Yu Tsai <[email-masked]>
---
 arch/arm64/boot/dts/rockchip/Makefile         |   1 +
 .../boot/dts/rockchip/rk3328-rock-pi-e.dts    | 369 ++++++++++++++++++
 2 files changed, 370 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 622d320ddd13..62d3abc17a24 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -11,6 +11,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-a1.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-rock64.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-rock-pi-e.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-roc-cc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-evb-act8846.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-geekbox.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
new file mode 100644
index 000000000000..7818d2e8180c
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
@@ -0,0 +1,369 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * (C) Copyright 2020 Chen-Yu Tsai <[email-masked]>
+ *
+ * Based on ./rk3328-rock64.dts, which is
+ *
+ * Copyright (c) 2017 PINE64
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include "rk3328.dtsi"
+
+/ {
+	model = "Radxa ROCK Pi E";
+	compatible = "radxa,rockpi-e", "rockchip,rk3328";
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+
+	gmac_clkin: external-gmac-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <125000000>;
+		clock-output-names = "gmac_clkin";
+		#clock-cells = <0>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&led_pin>;
+		pinctrl-names = "default";
+
+		led-0 {
+			/* schematic say green but the actual thing is blue */
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio3 RK_PA5 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	vcc_sd: sdmmc-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio0 RK_PD6 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdmmc0m1_pin>;
+		regulator-boot-on;
+		regulator-name = "vcc_sd";
+		vin-supply = <&vcc_io>;
+	};
+
+	vcc_host_5v: vcc-host-5v-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio3 RK_PA7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb30_host_drv>;
+		enable-active-high;
+		regulator-name = "vcc_host_5v";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc_sys>;
+	};
+
+	vcc_sys: vcc-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vcc_wifi: vcc-wifi-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio0 RK_PA0 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_en>;
+		regulator-name = "vcc_wifi";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc_io>;
+	};
+};
+
+&analog_sound {
+	status = "okay";
+};
+
+&codec {
+	status = "okay";
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu1 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu2 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu3 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&emmc {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	max-frequency = <150000000>;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_clk>, <&emmc_cmd>, <&emmc_bus8>;
+	vmmc-supply = <&vcc_io>;
+	vqmmc-supply = <&vcc18_emmc>;
+	status = "okay";
+};
+
+&gmac2io {
+	assigned-clocks = <&cru SCLK_MAC2IO>, <&cru SCLK_MAC2IO_EXT>;
+	assigned-clock-parents = <&gmac_clkin>, <&gmac_clkin>;
+	clock_in_out = "input";
+	phy-handle = <&rtl8211e>;
+	phy-mode = "rgmii";
+	phy-supply = <&vcc_io>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmiim1_pins>;
+	snps,aal;
+	snps,rxpbl = <0x4>;
+	snps,txpbl = <0x4>;
+	tx_delay = <0x26>;
+	rx_delay = <0x11>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rtl8211e: ethernet-phy@1 {
+			reg = <1>;
+			pinctrl-0 = <&eth_phy_int_pin>, <&eth_phy_reset_pin>;
+			pinctrl-names = "default";
+			interrupt-parent = <&gpio1>;
+			interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+			reset-assert-us = <10000>;
+			reset-deassert-us = <50000>;
+			reset-gpios = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&gmac2phy {
+	pinctrl-names = "default";
+	pinctrl-0 = <&fephyled_linkm1>, <&fephyled_rxm1>;
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+
+	rk805: pmic@18 {
+		compatible = "rockchip,rk805";
+		reg = <0x18>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
+		#clock-cells = <1>;
+		clock-output-names = "xin32k", "rk805-clkout2";
+		gpio-controller;
+		#gpio-cells = <2>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_int_l>;
+		rockchip,system-power-controller;
+		wakeup-source;
+
+		vcc1-supply = <&vcc_sys>;
+		vcc2-supply = <&vcc_sys>;
+		vcc3-supply = <&vcc_sys>;
+		vcc4-supply = <&vcc_sys>;
+		vcc5-supply = <&vcc_io>;
+		vcc6-supply = <&vcc_sys>;
+
+		regulators {
+			vdd_log: DCDC_REG1 {
+				regulator-name = "vdd_log";
+				regulator-min-microvolt = <712500>;
+				regulator-max-microvolt = <1450000>;
+				regulator-ramp-delay = <12500>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+
+			vdd_arm: DCDC_REG2 {
+				regulator-name = "vdd_arm";
+				regulator-min-microvolt = <712500>;
+				regulator-max-microvolt = <1450000>;
+				regulator-ramp-delay = <12500>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <950000>;
+				};
+			};
+
+			vcc_ddr: DCDC_REG3 {
+				regulator-name = "vcc_ddr";
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+				};
+			};
+
+			vcc_io: DCDC_REG4 {
+				regulator-name = "vcc_io";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3300000>;
+				};
+			};
+
+			vcc_18: LDO_REG1 {
+				regulator-name = "vcc_18";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vcc18_emmc: LDO_REG2 {
+				regulator-name = "vcc18_emmc";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vdd_10: LDO_REG3 {
+				regulator-name = "vdd_10";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+		};
+	};
+};
+
+&i2s1 {
+	status = "okay";
+};
+
+&io_domains {
+	pmuio-supply = <&vcc_io>;
+	vccio1-supply = <&vcc_io>;
+	vccio2-supply = <&vcc18_emmc>;
+	vccio3-supply = <&vcc_io>;
+	vccio4-supply = <&vcc_io>;
+	vccio5-supply = <&vcc_io>;
+	vccio6-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&pinctrl {
+	ethernet-phy {
+		eth_phy_int_pin: eth-phy-int-pin {
+			rockchip,pins = <1 RK_PD0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		eth_phy_reset_pin: eth-phy-reset-pin {
+			rockchip,pins = <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+
+	leds {
+		led_pin: led-pin {
+			rockchip,pins = <3 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	pmic {
+		pmic_int_l: pmic-int-l {
+			rockchip,pins = <2 RK_PA6 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	usb3 {
+		usb30_host_drv: usb30-host-drv {
+			rockchip,pins = <3 RK_PA7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	wifi {
+		wifi_en: wifi-en {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	disable-wp;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc0_clk>, <&sdmmc0_cmd>, <&sdmmc0_dectn>, <&sdmmc0_bus4>;
+	vmmc-supply = <&vcc_sd>;
+	status = "okay";
+};
+
+&saradc {
+	vref-supply = <&vcc_18>;
+	status = "okay";
+};
+
+&tsadc {
+	status = "okay";
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usb_host0_ehci {
+	status = "okay";
+};
-- 
2.29.2

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