build/patch/kernel/rockchip-dev/xt-q8l-v10-add-device-tree.patch

--- a/arch/arm/boot/dts/rk3288-xt-q8l-v10.dts	1970-01-01 01:00:00.000000000 +0100
+++ b/arch/arm/boot/dts/rk3288-xt-q8l-v10.dts	2018-09-23 15:07:23.816787921 +0200
@@ -0,0 +1,969 @@
+/*
+ * Copyright (c) 2014, 2015 FUKAUMI Naoki <naobsd@gmail.com>
+ * 					   2018 Paolo Sabatino <paolo.sabatino@gm**l.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "rk3288.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "XT-Q8L-V10-RK3288";
+	compatible = "generic,xt-q8l-v10-rk3288", "rockchip,rk3288";
+
+	memory {
+		reg = <0x0 0x0 0x0 0x80000000>;
+		device_type = "memory";
+	};
+	
+	cpu0_opp_table: opp_table {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp@600000000 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-microvolt = <900000>;
+		};
+		opp@816000000 {
+			opp-hz = /bits/ 64 <816000000>;
+			opp-microvolt = <1000000>;
+		};
+		opp@1008000000 {
+			opp-hz = /bits/ 64 <1008000000>;
+			opp-microvolt = <1050000>;
+		};
+		opp@1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <1100000>;
+		};
+		opp@1416000000 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <1200000>;
+		};
+		opp@1512000000 {
+			opp-hz = /bits/ 64 <1512000000>;
+			opp-microvolt = <1250000>;
+		};
+		opp@1608000000 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <1300000>;
+		};
+		/*
+		opp@1704000000 {
+			opp-hz = /bits/ 64 <1704000000>;
+			opp-microvolt = <1350000>;
+		};
+		opp@1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1400000>;
+		};
+		*/
+	};
+	
+	/*
+	 * Peripheral from original q8 device tree, currently no references
+	 * for drivers in linux kernel.
+	rockchip-hsadc@ff080000 {
+		compatible = "rockchip-hsadc";
+		reg = <0xff080000 0x4000>;
+		interrupts = <0x0 0x1f 0x4>;
+		#address-cells = <0x1>;
+		#size-cells = <0x0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <0x9a>;
+		clocks = <0x79 0x7 0x8 0x39>;
+		clock-names = "hclk_hsadc", "clk_hsadc_out", "clk_hsadc_ext";
+		dmas = <0x9b 0x0>;
+		dma-names = "data";
+		status = "disabled";
+	};
+	*/
+
+	ext_gmac: external-gmac-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+		clock-output-names = "ext_gmac";
+	};
+	
+	/*
+	 * Handle the IR receiver using the gpio-ir-receiver kernel module.
+	 * This works flawlessy, the original xt-q8l-v10 remote uses a NEC
+	 * protocol and the keymap rc-xt-q8l-v10 has to be compiled in the
+	 * kernel for the remote to work as an input device
+	 */
+	ir: ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpio7 RK_PA0 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ir_int>;
+		linux,rc-map-name = "rc-xt-q8l-v10";
+		wakeup-source;
+	};	
+
+	keys: gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		
+		pinctrl-names = "default";
+		pinctrl-0 = <&pwr_key>;
+
+		button@0 {
+			gpio-key,wakeup = <1>;
+			gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
+			label = "GPIO Power";
+			linux,code = <KEY_POWER>;
+			wakeup-source;
+			debounce-interval = <100>;
+		};
+		
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power {
+			/*
+				Power led is active high, but we set it here active low
+				so while there is mass storage access it turns red and
+				when it is idle is blue
+			*/
+			gpios = <&gpio7 2 GPIO_ACTIVE_LOW>; 
+			label = "power";
+			linux,default-trigger = "mmc0";
+			pinctrl-names = "default";
+			pinctrl-0 = <&power_led>;
+		};
+
+	};
+
+	vcc_sys: vsys-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_sys";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vcc_sd: sdmmc-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio7 11 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdmmc_pwr>;
+		regulator-name = "vcc_sd";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		startup-delay-us = <100000>;
+		vin-supply = <&vcc_io>;
+	};
+
+	vcc_flash: flash-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_flash";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_io>;
+	};
+
+	vcc_host_5v: usb-host-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&host_vbus_drv>;
+		regulator-name = "vcc_host_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+        regulator-always-on;
+        enable-active-high;
+//        startup-delay-us = <1000>;
+		vin-supply = <&vcc_sys>;
+	};
+
+
+	vcc_otg_5v: usb-otg-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&otg_vbus_drv>;
+		regulator-name = "vcc_otg_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+//        startup-delay-us = <1000>;
+		regulator-always-on;
+		vin-supply = <&vcc_sys>;
+	};
+
+	/*
+	 * Required power sequence to properly enable the wireless/bluetooth
+	 * module connected to sdio0
+	 */
+	sdio0_pwrseq: sdio0_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable_h>, <&bt_enable_h>;
+		reset-gpios = <&gpio4 28 GPIO_ACTIVE_LOW>, <&gpio4 29 GPIO_ACTIVE_LOW>;
+		post-power-on-delay-ms = <100>;
+	};
+	
+	/*
+	 * Sound taken from tinkerboard device tree, adapted to q8.
+	 */
+	soundcard-hdmi {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "DW-I2S-HDMI";
+		simple-audio-card,mclk-fs = <512>;
+
+		simple-audio-card,codec {
+			sound-dai = <&hdmi>;
+		};
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s>;
+		};
+	};
+	
+	soundcard-spdif {
+        compatible = "simple-audio-card";
+        simple-audio-card,name = "SPDIF";
+        simple-audio-card,dai-link@1 {
+			
+            cpu { 
+				sound-dai = <&spdif>; 
+			};
+			
+            codec { 
+				sound-dai = <&spdif_out>; 
+			};
+			
+        };
+    };
+
+    spdif_out: spdif-out {
+        compatible = "linux,spdif-dit";
+        #sound-dai-cells = <0>;
+    };
+
+};
+
+
+&io_domains {
+	status = "okay";
+
+	audio-supply = <&vcca_33>;
+	bb-supply = <&vcc_io>;
+	dvp-supply = <&vcc_18>;
+	flash0-supply = <&vcc_flash>;
+	flash1-supply = <&vcc_lan>;
+	gpio30-supply = <&vcc_io>;
+	gpio1830-supply = <&vcc_io>;
+	lcdc-supply = <&vcc_io>;
+	sdcard-supply = <&vccio_sd>;
+	wifi-supply = <&vcc_18>;
+};
+
+&cpu0 {
+	cpu0-supply = <&vdd_cpu>;
+	operating-points-v2 = <&cpu0_opp_table>;
+	/delete-node/operating-points;
+};
+
+&gmac {
+	assigned-clocks = <&cru SCLK_MAC>;
+	assigned-clock-parents = <&ext_gmac>;
+	clock_in_out = "input";
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>, <&phy_rst>, <&phy_pmeb>, <&phy_int>;
+	phy-supply = <&vcc_lan>;
+	phy-mode = "rgmii";
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 10000 1000000>;
+	snps,reset-gpio = <&gpio4 8 GPIO_ACTIVE_LOW>;
+	tx_delay = <0x30>;
+	rx_delay = <0x10>;
+	status = "ok";
+};
+
+&hdmi {
+	ddc-i2c-bus = <&i2c5>;
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
+&gpu {
+	mali-supply = <&vdd_gpu>;
+	status = "okay";
+};
+
+&i2c0 {
+	clock-frequency = <400000>;
+	status = "okay";
+
+	vdd_cpu: syr827@40 {
+		compatible = "silergy,syr827";
+		fcs,suspend-voltage-selector = <1>;
+		reg = <0x40>;
+		regulator-name = "vdd_cpu";
+		regulator-min-microvolt = <850000>;
+		regulator-max-microvolt = <1350000>;
+		regulator-ramp-delay = <8000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc_sys>;
+	};
+
+	vdd_gpu: syr828@41 {
+		compatible = "silergy,syr828";
+		fcs,suspend-voltage-selector = <1>;
+		reg = <0x41>;
+		regulator-name = "vdd_gpu";
+		regulator-min-microvolt = <850000>;
+		regulator-max-microvolt = <1350000>;
+		regulator-ramp-delay = <8000>;
+		regulator-always-on;
+		vin-supply = <&vcc_sys>;
+	};
+
+	hym8563: hym8563@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		clock-output-names = "xin32k";
+		interrupt-parent = <&gpio0>;
+		interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rtc_int>;
+	};
+
+	act8846: act8846@5a {
+		compatible = "active-semi,act8846";
+		reg = <0x5a>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_vsel>;
+		system-power-controller;
+
+		vp1-supply = <&vcc_sys>;
+		vp2-supply = <&vcc_sys>;
+		vp3-supply = <&vcc_sys>;
+		vp4-supply = <&vcc_sys>;
+		inl1-supply = <&vcc_sys>;
+		inl2-supply = <&vcc_sys>;
+		inl3-supply = <&vcc_20>;
+
+		regulators {
+			
+			/*
+			 * Regulator controlling DDR memory - always on
+			 */
+			vcc_ddr: REG1 {
+				regulator-name = "vcc_ddr";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * Regulator controlling various IO functions of the rk3288.
+			 * Always on
+			 */
+			vcc_io: REG2 {
+				regulator-name = "vcc_io";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * Regulator controlling various board logic.
+			 * Always on.
+			 * rk3288 electrical datasheet says it should have variable
+			 * voltage depending upon dvfs
+			 */
+			vdd_log: REG3 {
+				regulator-name = "vdd_log";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * No reference for this on electrical datasheet. Maybe this
+			 * is vcc_18? Maybe this is vcc18_flash on electrical datasheet.
+			 * So far we disable it.
+			 */
+			vcc_20: REG4 {
+				regulator-name = "vcc_20";
+				regulator-min-microvolt = <2000000>;
+				regulator-max-microvolt = <2000000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * This regulator controls SDIO. Electrical datasheet says
+			 * this regulator can be operated between 1.8 and 3.3 volts
+			 */
+			vccio_sd: REG5 {
+				regulator-name = "vccio_sd";
+				regulator-min-microvolt = <1800000>; 
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * Controlling HDMI and LCD controller on rk3288. 1.0 volts
+			 * by reference
+			 */
+			vdd10_lcd: REG6 {
+				regulator-name = "vdd10_lcd";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * From the rk3288 electrical datasheet, this regulator powers
+			 * the rk1000 chip, which is absent in our device, but it
+			 * is also supplying bluetooth, so we enable it.
+			 */
+			vcca_18: REG7 {
+				regulator-name = "vcca_18";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * This regulator controls, among other things, the SPDIF
+			 * interface, so we enable it
+			 */
+			vcca_33: REG8 {
+				regulator-name = "vcca_33";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on; // Turn this on to get SPDIF!
+			};
+
+			/*
+			 * LAN regulator
+			 */
+			vcc_lan: REG9 {
+				regulator-name = "vcc_lan";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			/*
+			 * Regulator controlling PMU, USB PHY and rk3288 PLLs.
+			 * 1.0 volts by reference
+			 */
+			vdd_10: REG10 {
+				regulator-name = "vdd_10";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * Regulator controlling Wifi over SDIO, SARADC and USB PHY.
+			 * Better turn this on
+			 */
+			vccio_wl: vcc_18: REG11 {
+				regulator-name = "vcc_18";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			/*
+			 * Not clear: apparently this controls HDMI and LCD controller
+			 * on rk3368 devices.
+			 * 1.8 volts by reference
+			 */
+			vcc18_lcd: REG12 {
+				regulator-name = "vcc18_lcd";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+};
+
+&i2c4 {
+	
+	/*
+	 * Here should go the RK1000 audio codec parts, but seems that
+	 * there is no driver in linux kernel at the moment, so we can't
+	 * describe it.
+	 * Datasheet is available here:
+	 * http://dl.radxa.com/rock/docs/hw/ds/RK1000-S%20DATASHEET%20V14.pdf
+	 */
+	status = "okay";
+	
+};
+
+&i2c5 {
+	status = "okay";
+};
+
+&pinctrl {
+
+	/*
+		These two lines here, these must be commented out! Otherwise for some reason the kernel
+		does not see the boot device anymore and will stay stuck in initramfs!
+		On the contrary, these are required by u-boot to keep the power holding so the device does not
+		automatically turns off after a small timeout
+	*/
+	/*pinctrl-names = "default";*/
+	/*pinctrl-0 = <&pwr_hold>;*/
+
+	pcfg_output_high: pcfg-output-high {
+		output-high;
+	};
+
+	pcfg_output_low: pcfg-output-low {
+		output-low;
+	};
+
+	pcfg_wl: pcfg-wl {
+		bias-pull-up;
+		drive-strength = <8>;
+	};
+	
+	pcfg_pull_up_drv_8ma: pcfg-pull-up-drv-8ma {
+		bias-pull-up;
+		drive-strength = <8>;
+	};
+	
+	pcfg_pull_none_8ma: pcfg-pull-none-8ma {
+		bias-disable;
+		drive-strength = <8>;
+	};
+
+	pcfg_wl_clk: pcfg-wl-clk {
+		bias-disable;
+		drive-strength = <12>;
+	};
+
+	pcfg_wl_int: pcfg-wl-int {
+		bias-pull-up;
+	};
+	
+	act8846 {
+		
+		/*
+		 * Original q8 device tree says:
+		 *  - gpio0 11 HIGH -> power hold
+		 *  - gpio7 1 LOW -> possibly pmic-vsel, we don't care 
+		 */ 
+		pmic_vsel: pmic-vsel {
+			rockchip,pins = <7 1 RK_FUNC_GPIO &pcfg_output_low>;
+		};
+		
+		pwr_hold: pwr-hold {
+			rockchip,pins = <0 11 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	gmac {
+		phy_int: phy-int {
+			rockchip,pins = <0 9 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		phy_pmeb: phy-pmeb {
+			rockchip,pins = <0 8 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		phy_rst: phy-rst {
+			rockchip,pins = <4 8 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+	};
+
+	hym8563 {
+		rtc_int: rtc-int {
+			rockchip,pins = <0 4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	keys {
+		pwr_key: pwr-key {
+			rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	leds {
+		power_led: power-led {
+			rockchip,pins = <7 2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	ir {
+		ir_int: ir-int {
+			rockchip,pins = <7 0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	sdmmc {
+		
+		/*
+		 * Copied from firefly board definition to give more drive to
+		 * the sdmmc pins. The Q8 seems to be quite able to drive
+		 * ultra high speed uSD cards, so we give a bit more energy
+		 * to the gpio pins
+		 */
+		sdmmc_bus4: sdmmc-bus4 {
+			rockchip,pins = <6 16 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
+					<6 17 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
+					<6 18 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
+					<6 19 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
+		};
+
+		sdmmc_clk: sdmmc-clk {
+			rockchip,pins = <6 20 RK_FUNC_1 &pcfg_pull_none_8ma>;
+		};
+
+		sdmmc_cmd: sdmmc-cmd {
+			rockchip,pins = <6 21 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
+		};
+
+		sdmmc_pwr: sdmmc-pwr {
+			rockchip,pins = <7 11 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+	};
+
+	usb_host1 {
+		host_vbus_drv: host-vbus-drv {
+			rockchip,pins = <0 14 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+	};
+
+	usb_otg {
+		otg_vbus_drv: otg-vbus-drv {
+			rockchip,pins = <0 12 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	sdio0 {
+		wifi_enable_h: wifienable-h {
+			rockchip,pins = <4 28 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+
+		bt_enable_h: bt-enable-h {
+			rockchip,pins = <4 27 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+
+	};
+	
+	
+	wireless-bluetooth {
+		uart0_gpios: uart0-gpios {
+			rockchip,pins = <4 19 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+};
+
+&saradc {
+	vref-supply = <&vcc_18>;
+	status = "okay";
+};
+
+&emmc {
+	
+	/*
+	 * eMMC seems to be 52Mhz device on q8 devices, so set it here
+	 * vmmc-supply and vqmmc-supply are removed because they hang
+	 * u-boot >= v2018.03
+	 * From the original q8l firmware and eMMC datasheet it also should
+	 * support DDR highspeed mode, but using mmc-ddr-3_3v or mmc-ddr-1_8v
+	 * properties are not working
+	 */
+	clock-frequency = <50000000>;
+	 
+	broken-cd;
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	disable-wp;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_clk>, <&emmc_cmd>, <&emmc_pwr>, <&emmc_bus8>;
+
+	status = "okay";
+};
+
+&sdmmc {
+	supports-sd;
+
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	card-detect-delay = <200>;
+	disable-wp;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc_clk>, <&sdmmc_cmd>, <&sdmmc_cd>, <&sdmmc_bus4>;
+	vmmc-supply = <&vcc_sd>;
+	vqmmc-supply = <&vccio_sd>;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	sd-uhs-ddr50;
+	status = "okay";
+};
+
+&sdio0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	
+	bus-width = <4>;
+	mmc-pwrseq = <&sdio0_pwrseq>;
+	
+	vmmc-supply = <&vcc_io>;
+    vqmmc-supply = <&vcc_18>; // This must be the same as in io_domains, 
+		// otherwise the mmc1 device won't be detected properly
+		
+//	clock-frequency = <50000000>;
+//	max-frequency = <50000000>;
+
+	pinctrl-names = "default";
+    pinctrl-0 = <&sdio0_bus4>, <&sdio0_cmd>, <&sdio0_clk>, <&sdio0_int>;
+	
+	cap-sdio-irq;
+	no-mmc;
+	no-sd;
+	cap-sd-highspeed; // required, otherwise does not work!
+	supports-sdio; 
+	non-removable;
+	
+	keep-power-in-suspend;
+	disable-wp;
+ 
+	
+	status = "okay";
+	
+	brcmf: bcrmf@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&gpio4>;
+		interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "host-wake";
+		status = "okay";
+	}; 
+	
+	//sd-uhs-sdr104; // required to be disabled, otherwise the device get
+		// detected, but there is no communication
+
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_clk>, <&spi0_cs0>, <&spi0_tx>, <&spi0_rx>, <&spi0_cs1>;
+	status = "okay";
+};
+
+&tsadc {
+	rockchip,hw-tshut-mode = <0>;
+	rockchip,hw-tshut-polarity = <0>;
+	status = "okay";
+};
+
+/*
+ * These dmas described here for uarts are present in original q8 board
+ * dts, so I replicate them here because documentation says that serial
+ * ports can have dmas.
+ * note: 
+ *  - uart0 is the serial port connected to the bluetooth module
+ *  - uart2 is the onboard serial port 
+ * 
+ */
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer>, <&uart0_cts>, <&uart0_rts>;
+	dmas = <&dmac_peri 1 &dmac_peri 2>;
+	dma-names = "tx", "rx";
+	status = "okay";
+//	uart-has-rtscts;	
+};
+
+&uart1 {
+	dmas = <&dmac_peri 3 &dmac_peri 4>;
+	dma-names = "tx", "rx";
+	status = "okay";
+};
+
+&uart2 {
+	dmas = <&dmac_bus_s 4 &dmac_bus_s 5>;
+	dma-names = "tx", "rx";
+	status = "okay";
+};
+
+&uart3 {
+	dmas = <&dmac_peri 7 &dmac_peri 8>;
+	dma-names = "tx", "rx";
+	status = "okay";
+};
+
+&uart4 {
+	dmas = <&dmac_peri 9 &dmac_peri 10>;
+	dma-names = "tx", "rx";
+	status = "disabled";
+};
+
+/*
+ * Describing resets for usb phy is important because otherwise the USB
+ * port gets stuck in case it goes into autosuspend: plugging any device
+ * when the port is autosuspended will actually kill the port itself and
+ * require a power cycle.
+ * This is required for the usbphy1 phy, nonetheless it is a good idea to
+ * specify the proper resources for all the phys though.
+ * The reference patch which works in conjuction with the reset lines:
+ * https://patchwork.kernel.org/patch/9469811/
+ */
+&usbphy {
+	status = "okay";
+};
+ 
+&usbphy0 {
+    resets = <&cru SRST_USBOTG_PHY>;
+    reset-names = "phy-reset";
+    vbus-supply = <&vcc_otg_5v>;
+};
+
+&usbphy1 {
+    resets = <&cru SRST_USBHOST0_PHY>;
+    reset-names = "phy-reset";
+};
+
+&usbphy2 {
+    resets = <&cru SRST_USBHOST1_PHY>;
+    reset-names = "phy-reset";
+    vbus-supply = <&vcc_host_5v>;
+};
+
+&usb_host0_ehci {
+    dr_mode = "host";
+    reg = <0x0 0xff500000 0x0 0x20000>;
+    status = "disable";
+};
+
+&usb_host1 {
+	status = "okay";
+};
+
+&usb_otg {
+	status = "okay";
+};
+
+/*
+ * Enalbe VPU services and complete the relative IOMMU configurations
+ * including the clocks which are currently missing (kernel 4.17.2) from
+ * the current base definitions from rk3288.dtsi include file
+ */
+&vopb {
+	status = "okay";
+};
+
+&vopl {
+	status = "okay";
+};
+
+&vpu_service {
+	status = "okay";
+};
+
+&hevc_service {
+	status = "okay";
+};
+
+&vopb_mmu {
+	status = "okay";
+};
+
+&vopl_mmu {
+	status = "okay";
+};
+
+&vpu_mmu {
+	status = "okay";
+};
+
+&hevc_mmu {
+	status = "okay";
+};
+
+&wdt {
+	status = "okay";
+};
+
+/* q8 device tree specifies that pwm0 is enabled on the device and
+ * this is the device which listens for IR remote control
+ */
+/*
+&pwm0 {
+	status = "okay";
+};
+*/
+
+// i2s bus is present on q8 device, enable it
+&i2s {
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
+// spdif is present on q8 device, enable it
+&spdif {
+	status = "okay";
+};