How do I make sure have a dtb that can guarantee the usb0 port works fine as device mode on my custom carrier board?

nvidias · December 23, 2021, 11:02am

Hi,
We use jetpack4.6, custom carrier board, and some information is below:
Our SCH:

Our DTS:

/*
 * Common include DTS file for CVM:P2888-0001 and CVB:P2822-0000 variants.
 *
 * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program 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; version 2 of the License.
 *
 * This program 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.
 */

#include "dt-bindings/extcon-ids.h"
#include "dt-bindings/gpio/tegra194-gpio.h"
#include "tegra194-p2888-0000-a00.dtsi"
#include <t19x-common-platforms/tegra194-platforms-eqos.dtsi>
#include "tegra194-p2822-0000-a00.dtsi"
#include "tegra194-power-tree-p2888-0001-p2822-1000.dtsi"
#include <t19x-common-platforms/tegra194-comms.dtsi>
#include "tegra194-thermal-p2888.dtsi"
#include "tegra194-plugin-manager-p2888-0000.dtsi"
#include "tegra194-plugin-manager-p2822-0000.dtsi"
#include "tegra194-super-module-e2614-p2888-0000.dtsi"
#include <t19x-common-platforms/tegra194-no-pll-aon-clock.dtsi>
#include "tegra194-p2822-0000-eeprom.dtsi"

/ {
	nvidia,dtsfilename = __FILE__;
	nvidia,dtbbuildtime = __DATE__, __TIME__;
	nvidia,fastboot-usb-vid = <0x0955>;
	nvidia,fastboot-usb-pid = <0xee1e>;
	model = "Jetson-AGX";
	compatible = "nvidia,galen", "nvidia,jetson-xavier", "nvidia,p2822-0000+p2888-0001", "nvidia,tegra194";

	chosen {
		bootargs ="console=ttyTCU0,115200";
		board-has-eeprom;
	};

	firmware {
		android {
			compatible = "android,firmware";
			hardware = "jetson-xavier";
			vbmeta {
				compatible = "android,vbmeta";
				parts = "vbmeta,kernel,kernel-dtb,APP,vendor,SOS";
			};
			fstab {
				compatible = "android,fstab";
				vendor {
					compatible = "android,vendor";
					dev = "/dev/block/platform/3460000.sdhci/by-name/vendor";
					type = "ext4";
					mnt_flags = "ro";
					fsmgr_flags = "wait,avb";
				};
				odm {
					compatible = "android,odm";
					dev = "/dev/block/platform/3460000.sdhci/by-name/odm";
					type = "ext4";
					mnt_flags = "ro";
					fsmgr_flags = "wait,avb";
				};
			};
		};
	};

	bluedroid_pm {
		compatible = "nvidia,tegra-bluedroid_pm";
		bluedroid_pm,reset-gpio = <&tegra_main_gpio TEGRA194_MAIN_GPIO(M, 6) 0>;
		bluedroid_pm,host-wake-gpio = <&tegra_main_gpio TEGRA194_MAIN_GPIO(Y, 0) 0>;
		bluedroid_pm,ext-wake-gpio = <&tegra_main_gpio TEGRA194_MAIN_GPIO(M, 7) 0>;
		interrupt-parent = <&tegra_main_gpio>;
		interrupts = <TEGRA194_MAIN_GPIO(Y, 0) 0x01>;
	};

	spi@c260000 {
		status = "disabled";
	};

	spi@3210000 {
		status = "okay";
		spi@0 {
			compatible = "tegra-spidev";
			reg = <0x0>;
			spi-max-frequency = <33000000>;
			controller-data {
				nvidia,enable-hw-based-cs;
				/*nvidia,rx-clk-tap-delay = <0x11>;*/
			};
		};
	};

	spi@3230000 {
		status = "okay";
		spi@0 {
			compatible = "tegra-spidev";
			reg = <0x0>;
			spi-max-frequency = <33000000>;
			controller-data {
				nvidia,enable-hw-based-cs;
				/*nvidia,rx-clk-tap-delay = <0x11>;*/
			};
		};
	};

	spi@3270000 {
		status = "disabled";
	};

	spi@3300000 {
		status = "disabled";
	};

	pmc@c370000 {
		nvidia,invert-interrupt;
	};

	hdr40_i2c0: i2c@c240000 {
		bmi160@69 {
			compatible = "bmi,bmi160";
			reg = <0x69>;
			interrupt-parent = <&tegra_aon_gpio>;
			interrupts = <TEGRA194_AON_GPIO(AA, 2) GPIO_ACTIVE_LOW>;
			accelerometer_matrix    = [01 00 00 00 01 00 00 00 01];
			gyroscope_matrix        = [01 00 00 00 01 00 00 00 01];
			accelerometer_delay_us_min = <1250>;
			gyroscope_delay_us_min = <1250>;
			status = "disabled";
		};
		ucsi_ccg: ucsi_ccg@8 {
			status = "disabled";
			typec-extcon {
				typec_port0: port-0 {
					status = "disabled";
					#extcon-cells = <1>;
				};
				typec_port1: port-1 {
					status = "disabled";
					#extcon-cells = <1>;
				};
			};
			typec-pd {
				typec_pd: pd {
					status = "disabled";
					#extcon-cells = <1>;
				};
			};
		};
	};

#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2

	xusb_padctl: xusb_padctl@3520000 {
		status = "okay";

		pads {
			usb2 {
				lanes {
					usb2-0 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-1 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-2 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-3 {
						nvidia,function = "xusb";
						status = "okay";
					};
				};
			};
			usb3 {
				lanes {
					usb3-0 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb3-2 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb3-3 {
						nvidia,function = "xusb";
						status = "okay";
					};
				};
			};
		};

		ports {
			usb2-0 {
				mode = "device";
				status = "okay";
			};
			usb2-1 {
				mode = "device";
				status = "okay";
			};
			usb2-2 {
				mode = "device";
				status = "okay";
			};
			usb2-3 {
				mode = "device";
				status = "okay";
			};
			usb3-0 {
				nvidia,usb2-companion = <1>;
				status = "device";
			};
			usb3-2 {
				nvidia,usb2-companion = <0>;
				status = "device";
			};
			usb3-3 {
				nvidia,usb2-companion = <3>;
				status = "device";
			};
		};
	};
#endif

	tegra_xudc: xudc@3550000 {
	/*
		extcon-cables = <&typec_port0 0>;
		extcon-cable-names = "vbus";
		#extcon-cells = <1>;
	*/
#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-2}>;
		phy-names = "usb2", "usb3";
		nvidia,xusb-padctl = <&xusb_padctl>;
#endif
		nvidia,boost_cpu_freq = <1200>;
		status = "okay";
	};

	tegra_xhci: xhci@3610000 {
	/*
		extcon-cables = <&typec_port0 1>;
		extcon-cable-names = "id";
		#extcon-cells = <1>;
	*/
#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-1}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-3}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-2}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-2}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-3}>;
		phy-names = "usb2-0", "usb2-1", "usb2-3", "usb2-2",
			"usb3-2", "usb3-0", "usb3-3";
		nvidia,xusb-padctl = <&xusb_padctl>;
#endif
		status = "okay";
	};

	arm-pmu {
		status = "okay";
	};

	power-domain {
		status = "disabled";
	};

	interrupt-controller {
		status = "disabled";
	};

	mods-simple-bus {
		status = "disabled";
	};

	eeprom-manager {
		status = "disabled";
	};

	cpuidle {
		compatible = "nvidia,tegra19x-cpuidle";
		status = "okay";
	};

	thermal-zones {
		status = "disabled";
	};

	reserved-memory {
		ramoops_carveout {
			status = "okay";
		};
	};

	mttcan@c310000 {
		status = "okay";
	};

	mttcan@c320000 {
		status = "okay";
	};

	serial@3110000 {
		status = "okay";
	};

	pwm@3280000 {
		status = "okay";
	};

	pwm@32c0000 {
		status = "okay";
	};

	pwm@32f0000 {
		status = "okay";
	};

	hdr40_i2c1: i2c@31e0000 {
		pinctrl-names = "default";
		pinctrl-0 = <&dpaux_default>;
		bmi160@69 {
			compatible = "bmi,bmi160";
			reg = <0x69>;
			accelerometer_matrix    = [01 00 00 00 01 00 00 00 01];
			gyroscope_matrix        = [01 00 00 00 01 00 00 00 01];
			status = "disabled";
		};
	};

	host1x {
		dpaux@155F0000 {
			status = "okay";
			compatible = "nvidia,tegra194-dpaux3-padctl";
			/delete-property/ power-domains;
			dpaux_default: pinmux@0 {
				dpaux3_pins {
					pins = "dpaux3-3";
					function = "i2c";
				};
			};
		};
	};

	ufshci@2450000 {
		status = "disabled";
		nvidia,enable-hs-mode;
		nvidia,cd-gpios = <&tegra_aon_gpio TEGRA194_AON_GPIO(EE, 0) GPIO_ACTIVE_HIGH>;
		nvidia,cd-wakeup-capable;
	};
	pfsd {
		pwm_polarity= <PWM_POLARITY_NORMAL>;
		suspend_state = <0>;
	};
	clocks-init {
		compatible = "nvidia,clocks-config";
		status = "okay";
		disable {
			/*
			clocks = <&aon_clks TEGRA194_CLK_PLLAON>,
				<&bpmp_clks TEGRA194_CLK_CAN1>,
				<&bpmp_clks TEGRA194_CLK_CAN2>;
			*/
		};
	};
};

/*
&head0 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&head1 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&head2 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&sor0 {
	nvidia,typec-port = /bits/ 8 <0>;
};

&sor1 {
	nvidia,typec-port = /bits/ 8 <1>;
};
*/

#if LINUX_VERSION >= 414
#include <tegra194-linux-4.14.dtsi>
#endif

The question is how do I make sure have a dtb that can guarantee the usb0 port works fine as device mode?

Thanks!
BR.

WayneWWW · December 24, 2021, 3:35am

I am no hardware guy. But looks like your hardware design is wrong.

Please refer to our design guide document for otg first.

nvidias · December 27, 2021, 10:09am

Hi WayneWWW，

Thanks for your reply！
official devkit board SCH as follow：

In contrast to the official devkit board, our custom carrier board is not connected to the signal shown in the red box above，at the same time, the PD chip is removed.

with follow dts(part of tegra194-p2888-0001-p2822-0000-common.dtsi),it can recognizes a “ID 0955:7035 NVidia Corp.” device, but when the system starts up, it can’t recognize the mouse and keyboard.
I want the USB2-0 to be able to flash Nvme and recognize devices like mouse and keyboard when the system boots up,what can be done to achieve this goal?

#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2

	external-connection {
		vbus_extcon: extcon@1 {
			compatible = "extcon-gpio-states";
			reg = <0x1>;
			extcon-gpio,name = "VBUS";
			extcon-gpio,out-cable-names = <EXTCON_USB EXTCON_USB_HOST EXTCON_NONE>;
			cable-connected-on-boot = <0>;
			#extcon-cells = <1>;
			status = "okay";
		};
	};

	xusb_padctl: xusb_padctl@3520000 {
		status = "okay";

		pads {
			usb2 {
				lanes {
					usb2-0 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-1 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-2 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb2-3 {
						nvidia,function = "xusb";
						status = "okay";
					};
				};
			};
			usb3 {
				lanes {
					usb3-0 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb3-2 {
						nvidia,function = "xusb";
						status = "okay";
					};
					usb3-3 {
						nvidia,function = "xusb";
						status = "okay";
					};
				};
			};
		};

		ports {
			usb2-0 {
				mode = "device";
				vbus-supply = <&battery_reg>;
				status = "okay";
			};
			usb2-1 {
				mode = "host";
				status = "okay";
			};
			usb2-2 {
				mode = "host";
				status = "okay";
			};
			usb2-3 {
				mode = "host";
				status = "okay";
			};
			usb3-0 {
				nvidia,usb2-companion = <1>;
				status = "okay";
			};
			usb3-2 {
				nvidia,usb2-companion = <0>;
				status = "okay";
			};
			usb3-3 {
				nvidia,usb2-companion = <3>;
				nvidia,usb3-gen1-only= <1>;
				status = "okay";
			};
		};
	};
#endif

	tegra_xudc: xudc@3550000 {

		extcon-cables = <&vbus_extcon 0>;
		extcon-cable-names = "vbus";
		#extcon-cells = <1>;

#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-2}>;
		phy-names = "usb2", "usb3";
		nvidia,xusb-padctl = <&xusb_padctl>;
#endif
		nvidia,boost_cpu_freq = <1200>;
		status = "okay";
	};

	tegra_xhci: xhci@3610000 {

		extcon-cables = <&vbus_extcon 1>;
		extcon-cable-names = "id";
		#extcon-cells = <1>;

#if TEGRA_XUSB_PADCONTROL_VERSION >= DT_VERSION_2
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-1}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-3}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-2}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-2}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-3}>;
		phy-names = "usb2-0", "usb2-1", "usb2-3", "usb2-2",
			"usb3-2", "usb3-0", "usb3-3";
		nvidia,xusb-padctl = <&xusb_padctl>;
#endif
		status = "okay";
	};

	arm-pmu {
		status = "okay";
	};

	power-domain {
		status = "disabled";
	};

	interrupt-controller {
		status = "disabled";
	};

	mods-simple-bus {
		status = "disabled";
	};

	eeprom-manager {
		status = "disabled";
	};

	cpuidle {
		compatible = "nvidia,tegra19x-cpuidle";
		status = "okay";
	};

	thermal-zones {
		status = "disabled";
	};

	reserved-memory {
		ramoops_carveout {
			status = "okay";
		};
	};

	mttcan@c310000 {
		status = "okay";
	};

	mttcan@c320000 {
		status = "okay";
	};

	serial@3110000 {
		status = "okay";
	};

	pwm@3280000 {
		status = "okay";
	};

	pwm@32c0000 {
		status = "okay";
	};

	pwm@32f0000 {
		status = "okay";
	};

	hdr40_i2c1: i2c@31e0000 {
		pinctrl-names = "default";
		pinctrl-0 = <&dpaux_default>;
		bmi160@69 {
			compatible = "bmi,bmi160";
			reg = <0x69>;
			accelerometer_matrix    = [01 00 00 00 01 00 00 00 01];
			gyroscope_matrix        = [01 00 00 00 01 00 00 00 01];
			status = "disabled";
		};
	};

	host1x {
		dpaux@155F0000 {
			status = "okay";
			compatible = "nvidia,tegra194-dpaux3-padctl";
			/delete-property/ power-domains;
			dpaux_default: pinmux@0 {
				dpaux3_pins {
					pins = "dpaux3-3";
					function = "i2c";
				};
			};
		};
	};

	ufshci@2450000 {
		status = "disabled";
		nvidia,enable-hs-mode;
		nvidia,cd-gpios = <&tegra_aon_gpio TEGRA194_AON_GPIO(EE, 0) GPIO_ACTIVE_HIGH>;
		nvidia,cd-wakeup-capable;
	};
	pfsd {
		pwm_polarity= <PWM_POLARITY_NORMAL>;
		suspend_state = <0>;
	};
	clocks-init {
		compatible = "nvidia,clocks-config";
		status = "okay";
		disable {
			clocks = <&aon_clks TEGRA194_CLK_PLLAON>,
				<&bpmp_clks TEGRA194_CLK_CAN1>,
				<&bpmp_clks TEGRA194_CLK_CAN2>;
		};
	};
};

/*
&head0 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&head1 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&head2 {
	extcon-cables = <&typec_port0 2 &typec_port1 2>;
	extcon-cable-names = "typec0", "typec1";
	#extcon-cells = <1>;
};

&sor0 {
	nvidia,typec-port = /bits/ 8 <0>;
};

&sor1 {
	nvidia,typec-port = /bits/ 8 <1>;
};
*/

Thanks!
BR.

WayneWWW · December 27, 2021, 10:53am

You don’t need to keep pasting the dts file. They are not what we should concern at this moment.

My question here is simple. What kind of usb connector is in use here?
Did you adopt a type C design but without using PD controller? How is your tegra side connection?

nvidias · December 27, 2021, 10:59am

Hi WayneWWW,

Thanks for your reply!

We use type-A connector without using PD controller.
When Xavier starts, tegra Side(xavier as host) connects to a removable hard drive, mouse or keyboard.

Thanks!
BR.

WayneWWW · December 27, 2021, 11:00am

Hi,

And you want this type A connector to be used to as flash port?

nvidias · December 27, 2021, 11:07am

Hi WayneWWW,

Thanks for your reply!

Yes,use it to flash the system while in download mode, and use it as a USB Host when Xavier starts up.

thanks!
BR.

WayneWWW · December 27, 2021, 11:08am

Hi,

It is not possible. The hardware design is wrong. Type A connector is not able to be used as usb device mode.

nvidias · December 27, 2021, 11:35am

Hi WayneWWW,

Thank you for your quick reply!
What a pity！

I would like to know, can I force the USB mode to change by software or command? How do I change it?

Thanks!

BR.

WayneWWW · December 27, 2021, 11:38am

Not possible with type A usb port…

system · January 10, 2022, 11:38am

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How do I make sure have a dtb that can guarantee the usb0 port works fine as device mode on my custom carrier board?

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