Message-ID: <1541086962-52626-1-git-send-email-michal.vokac@ysoft.com>
Date:   Thu, 1 Nov 2018 15:43:26 +0000
From:   Vokáč Michal <Michal.Vokac@...ft.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        NXP Linux Team <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Vokáč Michal <Michal.Vokac@...ft.com>,
        Andrew Lunn <andrew@...n.ch>
Subject: [PATCH] ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards

These are i.MX6S/DL based SBCs embedded in various Y Soft products.
All share the same board design but have slightly different HW
configuration.

Ursa
- i.MX6S SoC, 512MB RAM DDR3, 4GB eMMC, microSD
- parallel WVGA 7" LCD with touch panel
- 1x Eth (QCA8334 switch)
- USB OTG
- USB host (micro-B)

Draco
- i.MX6S SoC, 512MB RAM DDR3, 4GB eMMC, microSD
- parallel WVGA 7" LCD with touch panel
- 2x Eth (QCA8334 switch)
- USB OTG
- USB host (micro-B)
- RGB LED (I2C LP5562)
- 3.5mm audio jack + codec (LM49350)

Hydra
- i.MX6DL SoC, 2GB RAM DDR3, 4GB eMMC, microSD
- I2C OLED display, capacitive matrix keys
- 2x Eth (QCA8334 switch)
- USB OTG
- RGB LED (I2C LP5562)
- 3.5mm audio jack + codec (LM49350)
- HDMI
- miniPCIe slot

Cc: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Michal Vokáč <michal.vokac@...ft.com>
---

All the boards are booting fine but not everything is enabled/supported
yet though. There is few things that will need some effort to get them
fully working.

 - HDMI: nothing specific, it just does not have the priority
 - OLED display: reset signal inversion, wrong display resolution,...
 - capacitive keys: polled driver for MPR121 needed as we do not have 
   the interrupt line
 - Eth switch: need tweaks in i.MX RGMII pin group control registers
 - audio codec: no existing driver yet (in mainline)

So expect patches targeting the mentioned issues and updates to the dts
files enabling additional HW.
 
CC-ing Andrew since he was interested in this board as it has a DSA
Ethernet switch populated.

Thanks,
Michal

 arch/arm/boot/dts/Makefile                 |   3 +
 arch/arm/boot/dts/imx6dl-yapp4-common.dtsi | 535 +++++++++++++++++++++++++++++
 arch/arm/boot/dts/imx6dl-yapp4-draco.dts   |  57 +++
 arch/arm/boot/dts/imx6dl-yapp4-hydra.dts   |  33 ++
 arch/arm/boot/dts/imx6dl-yapp4-ursa.dts    |  53 +++
 5 files changed, 681 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
 create mode 100644 arch/arm/boot/dts/imx6dl-yapp4-draco.dts
 create mode 100644 arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
 create mode 100644 arch/arm/boot/dts/imx6dl-yapp4-ursa.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b5bd3de..cf24410 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -441,6 +441,9 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6dl-wandboard.dtb \
 	imx6dl-wandboard-revb1.dtb \
 	imx6dl-wandboard-revd1.dtb \
+	imx6dl-yapp4-draco.dtb \
+	imx6dl-yapp4-hydra.dtb \
+	imx6dl-yapp4-ursa.dtb \
 	imx6q-apalis-eval.dtb \
 	imx6q-apalis-ixora.dtb \
 	imx6q-apalis-ixora-v1.1.dtb \
diff --git a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
new file mode 100644
index 0000000..9925523
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
@@ -0,0 +1,535 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2015-2018 Y Soft Corporation, a.s.
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm1 0 500000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <0 32 64 128 255>;
+		default-brightness-level = <32>;
+		num-interpolated-steps = <8>;
+		power-supply = <&sw2_reg>;
+		status = "disabled";
+	};
+
+	lcd_display: display {
+		compatible = "fsl,imx-parallel-display";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interface-pix-fmt = "rgb24";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_ipu1>;
+		status = "disabled";
+
+		port@0 {
+			reg = <0>;
+
+			lcd_display_in: endpoint {
+				remote-endpoint = <&ipu1_di0_disp0>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+
+			lcd_display_out: endpoint {
+				remote-endpoint = <&lcd_panel_in>;
+			};
+		};
+	};
+
+	panel: panel {
+		compatible = "dataimage,scf0700c48ggu18";
+		power-supply = <&sw2_reg>;
+		status = "disabled";
+
+		port {
+			lcd_panel_in: endpoint {
+				remote-endpoint = <&lcd_display_out>;
+			};
+		};
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reg_usb_otg_vbus: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_usbotg_vbus>;
+			regulator-name = "usb_otg_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			status = "okay";
+		};
+
+		reg_usb_h1_vbus: regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_usbh1_vbus>;
+			regulator-name = "usb_h1_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio1 29 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			status = "disabled";
+		};
+
+		reg_pcie: regulator@2 {
+			compatible = "regulator-fixed";
+			reg = <2>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_pcie_reg>;
+			regulator-name = "MPCIE_3V3";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			gpio = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			status = "disabled";
+		};
+	};
+};
+
+&fec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_enet>;
+	phy-mode = "rgmii-id";
+	phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_HIGH>;
+	phy-reset-duration = <20>;
+	phy-supply = <&sw2_reg>;
+	phy-handle = <&ethphy0>;
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy_port2: phy@1 {
+			reg = <1>;
+		};
+
+		phy_port3: phy@2 {
+			reg = <2>;
+		};
+
+		switch@0 {
+			compatible = "qca,qca8334";
+			reg = <0>;
+
+			switch_ports: ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				ethphy0: port@0 {
+					reg = <0>;
+					label = "cpu";
+					phy-mode = "rgmii";
+					ethernet = <&fec>;
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+
+				port@2 {
+					reg = <2>;
+					label = "eth2";
+					phy-handle = <&phy_port2>;
+				};
+
+				port@3 {
+					reg = <3>;
+					label = "eth1";
+					phy-handle = <&phy_port3>;
+				};
+			};
+		};
+	};
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+
+	eeprom@57 {
+		compatible = "atmel,24c128";
+		reg = <0x57>;
+		pagesize = <64>;
+		status = "okay";
+	};
+
+	leds: leds@30 {
+		compatible = "ti,lp5562";
+		label = "lp5562_leds";
+		reg = <0x30>;
+		clock-mode = /bits/ 8 <1>;
+		status = "disabled";
+
+		chan0 {
+			chan-name = "R";
+			led-cur = /bits/ 8 <0x20>;
+			max-cur = /bits/ 8 <0x60>;
+		};
+
+		chan1 {
+			chan-name = "G";
+			led-cur = /bits/ 8 <0x20>;
+			max-cur = /bits/ 8 <0x60>;
+		};
+
+		chan2 {
+			chan-name = "B";
+			led-cur = /bits/ 8 <0x20>;
+			max-cur = /bits/ 8 <0x60>;
+		};
+
+		chan3 {
+			chan-name = "W";
+			led-cur = /bits/ 8 <0x0>;
+			max-cur = /bits/ 8 <0x0>;
+		};
+	};
+
+	pfuze200@8 {
+		compatible = "fsl,pfuze200";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pmic>;
+		reg = <0x8>;
+
+		regulators {
+			sw1a_reg: sw1ab {
+				regulator-min-microvolt = <300000>;
+				regulator-max-microvolt = <1875000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <6250>;
+			};
+
+			sw2_reg: sw2 {
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			sw3a_reg: sw3a {
+				regulator-min-microvolt = <400000>;
+				regulator-max-microvolt = <1975000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			sw3b_reg: sw3b {
+				regulator-min-microvolt = <400000>;
+				regulator-max-microvolt = <1975000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			swbst_reg: swbst {
+				regulator-min-microvolt = <5000000>;
+				regulator-max-microvolt = <5150000>;
+			};
+
+			snvs_reg: vsnvs {
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <3000000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			vref_reg: vrefddr {
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			vgen1_reg: vgen1 {
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <1550000>;
+			};
+
+			vgen2_reg: vgen2 {
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <1550000>;
+			};
+
+			vgen3_reg: vgen3 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vgen4_reg: vgen4 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vgen5_reg: vgen5 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vgen6_reg: vgen6 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+		};
+	};
+};
+
+&iomuxc {
+	pinctrl_enet: enetgrp {
+		fsl,pins = <
+			MX6QDL_PAD_ENET_MDIO__ENET_MDIO		0x1B020
+			MX6QDL_PAD_ENET_MDC__ENET_MDC		0x1B020
+			MX6QDL_PAD_RGMII_TXC__RGMII_TXC		0x1B020
+			MX6QDL_PAD_RGMII_TD0__RGMII_TD0		0x1B020
+			MX6QDL_PAD_RGMII_TD1__RGMII_TD1		0x1B020
+			MX6QDL_PAD_RGMII_TD2__RGMII_TD2		0x1B020
+			MX6QDL_PAD_RGMII_TD3__RGMII_TD3		0x1B020
+			MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL	0x1B020
+			MX6QDL_PAD_RGMII_RXC__RGMII_RXC		0x1B020
+			MX6QDL_PAD_RGMII_RD0__RGMII_RD0		0x1B020
+			MX6QDL_PAD_RGMII_RD1__RGMII_RD1		0x1B020
+			MX6QDL_PAD_RGMII_RD2__RGMII_RD2		0x1B020
+			MX6QDL_PAD_RGMII_RD3__RGMII_RD3		0x1B020
+			MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL	0x1B020
+			MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK	0x1B010
+			MX6QDL_PAD_GPIO_16__ENET_REF_CLK	0x1B010
+			MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25	0x1B098
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX6QDL_PAD_KEY_COL3__I2C2_SCL	0x4001b899
+			MX6QDL_PAD_KEY_ROW3__I2C2_SDA	0x4001b899
+		>;
+	};
+
+	pinctrl_ipu1: ipu1grp {
+		fsl,pins = <
+			MX6QDL_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK	0x10
+			MX6QDL_PAD_DI0_PIN2__IPU1_DI0_PIN02		0x10
+			MX6QDL_PAD_DI0_PIN3__IPU1_DI0_PIN03		0x10
+			MX6QDL_PAD_DISP0_DAT0__IPU1_DISP0_DATA00	0x10
+			MX6QDL_PAD_DISP0_DAT1__IPU1_DISP0_DATA01	0x10
+			MX6QDL_PAD_DISP0_DAT2__IPU1_DISP0_DATA02	0x10
+			MX6QDL_PAD_DISP0_DAT3__IPU1_DISP0_DATA03	0x10
+			MX6QDL_PAD_DISP0_DAT4__IPU1_DISP0_DATA04	0x10
+			MX6QDL_PAD_DISP0_DAT5__IPU1_DISP0_DATA05	0x10
+			MX6QDL_PAD_DISP0_DAT6__IPU1_DISP0_DATA06	0x10
+			MX6QDL_PAD_DISP0_DAT7__IPU1_DISP0_DATA07	0x10
+			MX6QDL_PAD_DISP0_DAT8__IPU1_DISP0_DATA08	0x10
+			MX6QDL_PAD_DISP0_DAT9__IPU1_DISP0_DATA09	0x10
+			MX6QDL_PAD_DISP0_DAT10__IPU1_DISP0_DATA10	0x10
+			MX6QDL_PAD_DISP0_DAT11__IPU1_DISP0_DATA11	0x10
+			MX6QDL_PAD_DISP0_DAT12__IPU1_DISP0_DATA12	0x10
+			MX6QDL_PAD_DISP0_DAT13__IPU1_DISP0_DATA13	0x10
+			MX6QDL_PAD_DISP0_DAT14__IPU1_DISP0_DATA14	0x10
+			MX6QDL_PAD_DISP0_DAT15__IPU1_DISP0_DATA15	0x10
+			MX6QDL_PAD_DISP0_DAT16__IPU1_DISP0_DATA16	0x10
+			MX6QDL_PAD_DISP0_DAT17__IPU1_DISP0_DATA17	0x10
+			MX6QDL_PAD_DISP0_DAT18__IPU1_DISP0_DATA18	0x10
+			MX6QDL_PAD_DISP0_DAT19__IPU1_DISP0_DATA19	0x10
+			MX6QDL_PAD_DISP0_DAT20__IPU1_DISP0_DATA20	0x10
+			MX6QDL_PAD_DISP0_DAT21__IPU1_DISP0_DATA21	0x10
+			MX6QDL_PAD_DISP0_DAT22__IPU1_DISP0_DATA22	0x10
+			MX6QDL_PAD_DISP0_DAT23__IPU1_DISP0_DATA23	0x10
+		>;
+	};
+
+	pinctrl_pcie: pciegrp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_17__GPIO7_IO12		0x1b098
+			MX6QDL_PAD_KEY_COL4__GPIO4_IO14		0x1b098
+			MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20	0x1b098
+		>;
+	};
+
+	pinctrl_pcie_reg: pciereggrp {
+		fsl,pins = <
+			MX6QDL_PAD_EIM_D19__GPIO3_IO19		0x1b098
+		>;
+	};
+
+	pinctrl_pmic: pmicgrp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_18__GPIO7_IO13		0x1b098
+		>;
+	};
+
+	pinctrl_backlight_pwm: pwm1grp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_9__PWM1_OUT	0x8
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA	0x1b0a8
+			MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA	0x1b0a8
+		>;
+	};
+
+	pinctrl_usbh1: usbh1grp {
+		fsl,pins = <
+			MX6QDL_PAD_EIM_D30__USB_H1_OC		0x1b098
+		>;
+	};
+
+	pinctrl_usbh1_vbus: usbh1-vbus {
+		fsl,pins = <
+			MX6QDL_PAD_ENET_TXD1__GPIO1_IO29	0x98
+		>;
+	};
+
+	pinctrl_usbotg: usbotggrp {
+		fsl,pins = <
+			MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID	0x1b098
+			MX6QDL_PAD_EIM_D21__USB_OTG_OC		0x1b098
+		>;
+	};
+
+	pinctrl_usbotg_vbus: usbotg-vbus {
+		fsl,pins = <
+			MX6QDL_PAD_EIM_D22__GPIO3_IO22	0x98
+		>;
+	};
+
+	pinctrl_usdhc3: usdhc3grp {
+		fsl,pins = <
+			MX6QDL_PAD_EIM_A16__GPIO2_IO22	0x1b018
+			MX6QDL_PAD_SD3_RST__GPIO7_IO08	0x1b018
+			MX6QDL_PAD_SD3_CMD__SD3_CMD	0x17059
+			MX6QDL_PAD_SD3_CLK__SD3_CLK	0x10059
+			MX6QDL_PAD_SD3_DAT0__SD3_DATA0	0x17059
+			MX6QDL_PAD_SD3_DAT1__SD3_DATA1	0x17059
+			MX6QDL_PAD_SD3_DAT2__SD3_DATA2	0x17059
+			MX6QDL_PAD_SD3_DAT3__SD3_DATA3	0x17059
+		>;
+	};
+
+	pinctrl_usdhc4: usdhc4grp {
+		fsl,pins = <
+			MX6QDL_PAD_SD4_CMD__SD4_CMD	0x1f069
+			MX6QDL_PAD_SD4_CLK__SD4_CLK	0x10069
+			MX6QDL_PAD_SD4_DAT0__SD4_DATA0	0x17069
+			MX6QDL_PAD_SD4_DAT1__SD4_DATA1	0x17069
+			MX6QDL_PAD_SD4_DAT2__SD4_DATA2	0x17069
+			MX6QDL_PAD_SD4_DAT3__SD4_DATA3	0x17069
+			MX6QDL_PAD_SD4_DAT4__SD4_DATA4	0x17069
+			MX6QDL_PAD_SD4_DAT5__SD4_DATA5	0x17069
+			MX6QDL_PAD_SD4_DAT6__SD4_DATA6	0x17069
+			MX6QDL_PAD_SD4_DAT7__SD4_DATA7	0x17069
+		>;
+	};
+
+	pinctrl_wdog: wdoggrp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_1__WDOG2_B	0x1b0b0
+		>;
+	};
+};
+
+&ipu1_di0_disp0 {
+	remote-endpoint = <&lcd_display_in>;
+};
+
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie>;
+	reset-gpio = <&gpio7 12 GPIO_ACTIVE_LOW>;
+	vpcie-supply = <&reg_pcie>;
+	status = "disabled";
+};
+
+&pwm1 {
+	#pwm-cells = <3>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_backlight_pwm>;
+	status = "disabled";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	status = "okay";
+};
+
+&usbh1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbh1>;
+	vbus-supply = <&reg_usb_h1_vbus>;
+	status = "disabled";
+};
+
+&usbotg {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg>;
+	vbus-supply = <&reg_usb_otg_vbus>;
+	srp-disable;
+	hnp-disable;
+	adp-disable;
+	status = "okay";
+};
+
+&usbphy1 {
+	fsl,tx-d-cal = <106>;
+	status = "okay";
+};
+
+&usbphy2 {
+	fsl,tx-d-cal = <109>;
+	status = "disabled";
+};
+
+&usdhc3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc3>;
+	bus-width = <4>;
+	cd-gpios = <&gpio7 8 GPIO_ACTIVE_LOW>;
+	wp-gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>;
+	no-1-8-v;
+	keep-power-in-suspend;
+	enable-sdio-wakeup;
+	vmmc-supply = <&sw2_reg>;
+	status = "disabled";
+};
+
+&usdhc4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc4>;
+	bus-width = <8>;
+	non-removable;
+	no-1-8-v;
+	keep-power-in-suspend;
+	vmmc-supply = <&sw2_reg>;
+	status = "okay";
+};
+
+&wdog1 {
+	status = "disabled";
+};
+
+&wdog2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wdog>;
+	fsl,ext-reset-output;
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6dl-yapp4-draco.dts b/arch/arm/boot/dts/imx6dl-yapp4-draco.dts
new file mode 100644
index 0000000..fb62f31
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-yapp4-draco.dts
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2015-2018 Y Soft Corporation, a.s.
+
+/dts-v1/;
+
+#include "imx6dl.dtsi"
+#include "imx6dl-yapp4-common.dtsi"
+
+/ {
+	model = "Y Soft IOTA Draco i.MX6Solo board";
+	compatible = "ysoft,imx6dl-yapp4-draco", "fsl,imx6dl";
+
+	cpus {
+		/delete-node/ cpu@1;
+	};
+
+	memory@...00000 {
+		reg = <0x10000000 0x20000000>;
+	};
+};
+
+&backlight {
+	status = "okay";
+};
+
+&lcd_display {
+	status = "okay";
+};
+
+&leds {
+	status = "okay";
+};
+
+&panel {
+	status = "okay";
+};
+
+&pwm1 {
+	status = "okay";
+};
+
+&reg_usb_h1_vbus {
+	status = "okay";
+};
+
+&usbh1 {
+	status = "okay";
+};
+
+&usbphy2 {
+	status = "okay";
+};
+
+&usdhc3 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts b/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
new file mode 100644
index 0000000..799fb4c
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2015-2018 Y Soft Corporation, a.s.
+
+/dts-v1/;
+
+#include "imx6dl.dtsi"
+#include "imx6dl-yapp4-common.dtsi"
+
+/ {
+	model = "Y Soft IOTA Hydra i.MX6DualLite board";
+	compatible = "ysoft,imx6dl-yapp4-hydra", "fsl,imx6dl";
+
+	memory@...00000 {
+		reg = <0x10000000 0x80000000>;
+	};
+};
+
+&leds {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&reg_pcie {
+	status = "okay";
+};
+
+&usdhc3 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6dl-yapp4-ursa.dts b/arch/arm/boot/dts/imx6dl-yapp4-ursa.dts
new file mode 100644
index 0000000..23af972
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-yapp4-ursa.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2015-2018 Y Soft Corporation, a.s.
+
+/dts-v1/;
+
+#include "imx6dl.dtsi"
+#include "imx6dl-yapp4-common.dtsi"
+
+/ {
+	model = "Y Soft IOTA Ursa i.MX6Solo board";
+	compatible = "ysoft,imx6dl-yapp4-ursa", "fsl,imx6dl";
+
+	cpus {
+		/delete-node/ cpu@1;
+	};
+
+	memory@...00000 {
+		reg = <0x10000000 0x20000000>;
+	};
+};
+
+&backlight {
+	status = "okay";
+};
+
+&lcd_display {
+	status = "okay";
+};
+
+&panel {
+	status = "okay";
+};
+
+&pwm1 {
+	status = "okay";
+};
+
+&reg_usb_h1_vbus {
+	status = "okay";
+};
+
+&switch_ports {
+	/delete-node/ port@2;
+};
+
+&usbh1 {
+	status = "okay";
+};
+
+&usbphy2 {
+	status = "okay";
+};
-- 
2.1.4

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