rockchip: rk3328: Add support for FriendlyARM NanoPi R2S

This adds support for the NanoPi R2S from FriendlyArm.

Rockchip RK3328 SoC
1GB DDR4 RAM
Gigabit Ethernet (WAN)
Gigabit Ethernet (USB3) (LAN)
USB 2.0 Host Port
MicroSD slot
Reset button
WAN - LAN - SYS LED

Signed-off-by: David Bauer <mail@david-bauer.net>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>

3 files changed, 411 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index e320c2254ec..ebdda1a8f25 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -110,6 +110,7 @@ dtb-$(CONFIG_ROCKCHIP_RK3308) += \
 
 dtb-$(CONFIG_ROCKCHIP_RK3328) += \
 	rk3328-evb.dtb \
+	rk3328-nanopi-r2s.dtb \
 	rk3328-roc-cc.dtb \
 	rk3328-rock64.dtb \
 	rk3328-rock-pi-e.dtb
diff --git a/arch/arm/dts/rk3328-nanopi-r2s-u-boot.dtsi b/arch/arm/dts/rk3328-nanopi-r2s-u-boot.dtsi
new file mode 100644
index 00000000000..9e2ced1541f
--- /dev/null
+++ b/arch/arm/dts/rk3328-nanopi-r2s-u-boot.dtsi
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018-2019 Rockchip Electronics Co., Ltd
+ * (C) Copyright 2020 David Bauer
+ */
+
+#include "rk3328-u-boot.dtsi"
+#include "rk3328-sdram-ddr4-666.dtsi"
+/ {
+	chosen {
+		u-boot,spl-boot-order = "same-as-spl", &sdmmc, &emmc;
+	};
+};
+
+&gpio0 {
+	u-boot,dm-spl;
+};
+
+&pinctrl {
+	u-boot,dm-spl;
+};
+
+&sdmmc0m1_gpio {
+	u-boot,dm-spl;
+};
+
+&pcfg_pull_up_4ma {
+	u-boot,dm-spl;
+};
+
+/* Need this and all the pinctrl/gpio stuff above to set pinmux */
+&vcc_sd {
+	u-boot,dm-spl;
+};
+
+&gmac2io {
+	snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 10000 50000>;
+};
diff --git a/arch/arm/dts/rk3328-nanopi-r2s.dts b/arch/arm/dts/rk3328-nanopi-r2s.dts
new file mode 100644
index 00000000000..5445c5cb3d6
--- /dev/null
+++ b/arch/arm/dts/rk3328-nanopi-r2s.dts
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2020 David Bauer <mail@david-bauer.net>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "rk3328.dtsi"
+
+/ {
+	model = "FriendlyElec NanoPi R2S";
+	compatible = "friendlyarm,nanopi-r2s", "rockchip,rk3328";
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+
+	gmac_clk: gmac-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <125000000>;
+		clock-output-names = "gmac_clkin";
+		#clock-cells = <0>;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&reset_button_pin>;
+		pinctrl-names = "default";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 RK_PA0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+			debounce-interval = <50>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&lan_led_pin>,  <&sys_led_pin>, <&wan_led_pin>;
+		pinctrl-names = "default";
+
+		lan_led: led-0 {
+			gpios = <&gpio2 RK_PB7 GPIO_ACTIVE_HIGH>;
+			label = "nanopi-r2s:green:lan";
+		};
+
+		sys_led: led-1 {
+			gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
+			label = "nanopi-r2s:red:sys";
+		};
+
+		wan_led: led-2 {
+			gpios = <&gpio2 RK_PC2 GPIO_ACTIVE_HIGH>;
+			label = "nanopi-r2s:green:wan";
+		};
+	};
+
+	vcc_io_sdio: sdmmcio-regulator {
+		compatible = "regulator-gpio";
+		enable-active-high;
+		gpios = <&gpio1 RK_PD4 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&sdio_vcc_pin>;
+		pinctrl-names = "default";
+		regulator-name = "vcc_io_sdio";
+		regulator-always-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-settling-time-us = <5000>;
+		regulator-type = "voltage";
+		startup-delay-us = <2000>;
+		states = <1800000 0x1
+			  3300000 0x0>;
+		vin-supply = <&vcc_io_33>;
+	};
+
+	vcc_sd: sdmmc-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio0 RK_PD6 GPIO_ACTIVE_LOW>;
+		pinctrl-0 = <&sdmmc0m1_gpio>;
+		pinctrl-names = "default";
+		regulator-name = "vcc_sd";
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_io_33>;
+	};
+
+	vdd_5v: vdd-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_5v";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu1 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu2 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu3 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&gmac2io {
+	assigned-clocks = <&cru SCLK_MAC2IO>, <&cru SCLK_MAC2IO_EXT>;
+	assigned-clock-parents = <&gmac_clk>, <&gmac_clk>;
+	clock_in_out = "input";
+	phy-handle = <&rtl8211e>;
+	phy-mode = "rgmii";
+	phy-supply = <&vcc_io_33>;
+	pinctrl-0 = <&rgmiim1_pins>;
+	pinctrl-names = "default";
+	rx_delay = <0x18>;
+	snps,aal;
+	tx_delay = <0x24>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rtl8211e: ethernet-phy@1 {
+			compatible = "ethernet-phy-id001c.c915",
+				     "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+			pinctrl-0 = <&eth_phy_reset_pin>;
+			pinctrl-names = "default";
+			reset-assert-us = <10000>;
+			reset-deassert-us = <50000>;
+			reset-gpios = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&i2c1 {
+	status = "okay";
+
+	rk805: pmic@18 {
+		compatible = "rockchip,rk805";
+		reg = <0x18>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+		#clock-cells = <1>;
+		clock-output-names = "xin32k", "rk805-clkout2";
+		gpio-controller;
+		#gpio-cells = <2>;
+		pinctrl-0 = <&pmic_int_l>;
+		pinctrl-names = "default";
+		rockchip,system-power-controller;
+		wakeup-source;
+
+		vcc1-supply = <&vdd_5v>;
+		vcc2-supply = <&vdd_5v>;
+		vcc3-supply = <&vdd_5v>;
+		vcc4-supply = <&vdd_5v>;
+		vcc5-supply = <&vcc_io_33>;
+		vcc6-supply = <&vdd_5v>;
+
+		regulators {
+			vdd_log: DCDC_REG1 {
+				regulator-name = "vdd_log";
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <712500>;
+				regulator-max-microvolt = <1450000>;
+				regulator-ramp-delay = <12500>;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+
+			vdd_arm: DCDC_REG2 {
+				regulator-name = "vdd_arm";
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <712500>;
+				regulator-max-microvolt = <1450000>;
+				regulator-ramp-delay = <12500>;
+
+				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_33: DCDC_REG4 {
+				regulator-name = "vcc_io_33";
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3300000>;
+				};
+			};
+
+			vcc_18: LDO_REG1 {
+				regulator-name = "vcc_18";
+				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>;
+				};
+			};
+
+			vcc18_emmc: LDO_REG2 {
+				regulator-name = "vcc18_emmc";
+				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>;
+				};
+			};
+
+			vdd_10: LDO_REG3 {
+				regulator-name = "vdd_10";
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+		};
+	};
+};
+
+&io_domains {
+	pmuio-supply = <&vcc_io_33>;
+	vccio1-supply = <&vcc_io_33>;
+	vccio2-supply = <&vcc18_emmc>;
+	vccio3-supply = <&vcc_io_sdio>;
+	vccio4-supply = <&vcc_18>;
+	vccio5-supply = <&vcc_io_33>;
+	vccio6-supply = <&vcc_io_33>;
+	status = "okay";
+};
+
+&pinctrl {
+	button {
+		reset_button_pin: reset-button-pin {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	ethernet-phy {
+		eth_phy_reset_pin: eth-phy-reset-pin {
+			rockchip,pins = <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+
+	leds {
+		lan_led_pin: lan-led-pin {
+			rockchip,pins = <2 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		sys_led_pin: sys-led-pin {
+			rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		wan_led_pin: wan-led-pin {
+			rockchip,pins = <2 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	pmic {
+		pmic_int_l: pmic-int-l {
+			rockchip,pins = <1 RK_PD0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	sd {
+		sdio_vcc_pin: sdio-vcc-pin {
+			rockchip,pins = <1 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
+&pwm2 {
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	pinctrl-0 = <&sdmmc0_clk>, <&sdmmc0_cmd>, <&sdmmc0_dectn>, <&sdmmc0_bus4>;
+	pinctrl-names = "default";
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc_sd>;
+	vqmmc-supply = <&vcc_io_sdio>;
+	status = "okay";
+};
+
+&tsadc {
+	rockchip,hw-tshut-mode = <0>;
+	rockchip,hw-tshut-polarity = <0>;
+	status = "okay";
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usb20_otg {
+	status = "okay";
+	dr_mode = "host";
+};
+
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};