Auvidea J120-IMU rev.7 carrier board

[FrankB]

Hi albertr,

how exactly did you make the .dts changes? Did you copy the Auvidea .dts from ChangesTX2J140_Kernel_r28.1/source/ to the NVIDIA sources underneath /usr/src/hardware/nvidia/platform ?

Frank

[albertr]

Yes, I just extracted their changes from the directory you mentioned (attached here: [url]Auvidea J120-IMU rev.7 carrier board - Jetson TX2 - NVIDIA Developer Forums ) and applied them to my source tree (/usr/src/hardware/nvidia/).

-albertr

[tao.wang]

How to bring up the CAN bus when bootup without manually input of the following?

1. sudo modprobe mttcan
2. sudo ip link set can0 type can bitrate 1000000
3. sudo ifconfig can0 up

[Hexagonal]

Were anybody able to get devkit CSI camera working on J120?

[FrankB]

in /etc/network/interfaces add a new interface:

auto can0
iface can0 inet manual
pre-up /sbin/ip link set $IFACE type can bitrate 1000000
up /sbin/ifconfig $IFACE up
down /sbin/ifconfig $IFACE down

[tao.wang]

Thanks FrankB! This is what I am looking for, it is better than putting commands in rc.local.

[j.g.a.m.cox]

Hi Folks! I’m thinking about buying the J120 Board in Combination with the B102 HDMI to CSI-2 bridge. My goal is to be able to process a hdmi stream coming from a DSLR. I have a Jetson TX2, but I do not see this one mentioned explicitely on the page of the Auvidea. Do you guys think this combo will work on the TX2? If not, any suggestions on how to get HDMI input? The J130 Board is out of my budget as a student…

[albertr]

Hi Folks! I’m thinking about buying the J120 Board in Combination with the B102 HDMI to CSI-2 bridge. My goal is to be able to process a hdmi stream coming from a DSLR. I have a Jetson TX2, but I do not see this one mentioned explicitely on the page of the Auvidea. Do you guys think this combo will work on the TX2? If not, any suggestions on how to get HDMI input? The J130 Board is out of my budget as a student…

B102 won’t work with TX2… Can you use NVidia DevKit board instead of Auvidea J120? If so, then you can use the following:

https://devtalk.nvidia.com/default/topic/939179/jetson-tx1/4k-hdmi-capture-module-based-on-tc358840/1

-albertr

[callum.tyler]

Making pwm-fan work on the J120 board was as easy as removing GPIO from vdd-fan regulator. There’s no tca9539 i/o expander on this board and 5VDC fan voltage regulator cannot be controlled.

--- tegra186-cvb-prod-p2597-b00-p3310-1000-a00-00.dtsi.orig	2017-07-20 03:41:08.000000000 -0400
+++ tegra186-cvb-prod-p2597-b00-p3310-1000-a00-00.dtsi	2018-01-20 19:23:00.097237587 -0500
@@ -244,15 +244,15 @@
 
 		vdd_fan: regulator@13 {
 			compatible = "regulator-fixed-sync";
 			reg = <13>;
 			regulator-name = "vdd-fan";
 			regulator-min-microvolt = <5000000>;
 			regulator-max-microvolt = <5000000>;
-			gpio = <&gpio_i2c_0_74 4 0>;
+//			gpio = <&tegra_main_gpio TEGRA_MAIN_GPIO(J, 6) 0>;
 		};
 
 		vdd_3v3: regulator@14 {
 			compatible = "regulator-fixed-sync";
 			reg = <14>;
 			regulator-name = "vdd-3v3";
 			regulator-min-microvolt = <3300000>;

Also, PWM GPIO pin needs to be changed to GPIO19_AUD_RTS:

--- tegra186-quill-pwm-fan.dtsi.orig	2017-07-20 03:41:08.000000000 -0400
+++ tegra186-quill-pwm-fan.dtsi	2018-01-20 18:30:47.905525502 -0500
@@ -20,22 +20,24 @@
 		active_steps = <10>;
 		active_rpm = <0 1000 2000 3000 4000 5000 6000 7000 10000 11000>;
 		rpm_diff_tolerance = <2>;
 		active_rru = <40 2 1 1 1 1 1 1 1 1>;
 		active_rrd = <40 2 1 1 1 1 1 1 1 1>;
 		state_cap_lookup = <2 2 2 2 3 3 3 4 4 4>;
 		pwm_period = <45334>;
 		pwm_id = <3>;
 		step_time = <100>; /* mesecs */
 		state_cap = <7>;
 		active_pwm_max = <256>;
 		tach_period = <1000>;
-		pwm_gpio = <&tegra_aon_gpio TEGRA_AON_GPIO(V, 6) GPIO_ACTIVE_LOW>; /* TEGRA_MAIN_GPIO_PV6 */
+/*		pwm_gpio = <&tegra_aon_gpio TEGRA_AON_GPIO(V, 6) GPIO_ACTIVE_LOW>;*/ /* TEGRA_MAIN_GPIO_PV6 */
+		pwm_gpio = <&tegra_main_gpio TEGRA_MAIN_GPIO(J, 6) GPIO_ACTIVE_LOW>; /* TEGRA_MAIN_GPIO_PJ6 */
 	};
 	pwm-fan {
 		status = "okay";
 		compatible = "pwm-fan";
-
+		vdd-fan-supply = <&vdd_fan>;
 		shared_data = <&pwm_fan_shared_data>;
 		active_pwm = <0 80 120 160 255 255 255 255 255 255>;
 	};
 };
+

I’m still trying to get CAN Bus working… the board has two TJA1051TK/3 tranceivers, but there’s only one MCP2515 SPI to CAN controller on the board. I have a feeling that one of the tranceivers is connected directly to TX2 internal CAN controller. If anyone got it working on J120 board with TX2 module, please let me know.

Attached is the picture showing part of J120 populated with CAN Bus components…

-albertr

Hi albertr,

Which file did you have to edit to get the pwm-fan to work ?

Cheers,
Callum