Orin devkit: I2C not working, camera not probing

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

Hi,

This is a follow-up of Gstreamer doesn't detect second camera - #4 by alain.gautherot.
I have an IMX492 camera working on Xavier NX + R35.4.1 and need to port it to the Orin devkit (R35.4.1).
I’m using the following LI-JXAV-MIPI-ADPT-4CAM adapter board from Leopard:

I derived the DTS and overlay files from IMX477, flashed orin, but camera doesn’t get detected, not even probed.
The probe I see is from IMX274 which is the default.
I can’t run jetson-IO to try and select the dual-IMX492, it immediately within 0.5s after displaying the TUI windows.

Looks like I2C transfers to cameras are not working:

nvidia@sdj-orindk-02:~$ i2cdetect -l
i2c-3   i2c             3190000.i2c                             I2C adapter
i2c-30  i2c             i2c-2-mux (chan_id 0)                   I2C adapter
i2c-1   i2c             c240000.i2c                             I2C adapter
i2c-8   i2c             31e0000.i2c                             I2C adapter
i2c-6   i2c             31c0000.i2c                             I2C adapter
i2c-33  i2c             i2c-2-mux (chan_id 3)                   I2C adapter
i2c-4   i2c             Tegra BPMP I2C adapter                  I2C adapter
i2c-31  i2c             i2c-2-mux (chan_id 1)                   I2C adapter
i2c-2   i2c             3180000.i2c                             I2C adapter
i2c-0   i2c             3160000.i2c                             I2C adapter
i2c-9   i2c             NVIDIA SOC i2c adapter 0                I2C adapter
i2c-7   i2c             c250000.i2c                             I2C adapter
i2c-5   i2c             31b0000.i2c                             I2C adapter
i2c-32  i2c             i2c-2-mux (chan_id 2)                   I2C adapter

nvidia@sdj-orindk-02:~$ i2cdetect -y -r 30
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- 54 -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: UU -- -- -- -- -- -- --

nvidia@sdj-orindk-02:~$ i2ctransfer -f -y 30 w2@0x1a 0x30 0x00 r256
Error: Sending messages failed: Remote I/O error

Also, I don’t see the CAM_I2C GPIO on AGX Orin, does it still exist?
Any better reference DTS I could look at besides IMX477?

Thanks,
Alain

4

@alain.gautherot

What IMX477 code files do you have? Are they for LI-JXAV-MIPI-ADPT-4CAM board?
Below patch files are for Jetson AGX Orin + LI-JXAV-MIPI-ADPT-4CAM + IMX477-MIPI camera. Please refer to these files to build the driver.

5

Thanks Simon for the drop.

I see CAM1_RST_L is set to (AC, 2) which is CAM_FRSYNC2, is that intentional or should it be (AC, 1)?

#define CAM0_RST_L|TEGRA234_MAIN_GPIO(H, 3)
#define CAM0_PWDN|TEGRA234_MAIN_GPIO(H, 6)
#define CAM1_RST_L|TEGRA234_MAIN_GPIO(AC, 2)    <== should this be (AC, 1)?
#define CAM1_PWDN|TEGRA234_MAIN_GPIO(AC, 0)

I also added these sections.

				pca9570_a@24 {
					compatible = "nxp,pca9570";
					reg = <0x24>;
					channel = "a";
					drive_ic = "DRV8838";
				};

I noted that rail ‘avdd-cam-2v8’ is OFF and wonder if that could be a problem.

root@sdj-orindk-02:/sys/kernel/debug/regulator# cat rail_states | grep avdd
regulator.25 (avdd-cam-2v8): OFF(0)

Regulator control seems to be implemented in the driver and in the DTS

	i2c@3180000 {
		tca9546@70 {
			i2c@0 {
				imx492_a@1a {
					compatible = "nvidia,imx492";
					/* I2C device address */
					reg = <0x1a>;

					/* V4L2 device node location */
					devnode = "video0";
					...
					avdd-reg = "vana";    # <== here
					iovdd-reg = "vif";    # <==
					dvdd-reg = "vdig";    # <==

Anyway, I2C still doesn’t work. Same output from dmesg:

nvidia@sdj-orindk-02:~$ sudo dmesg | grep imx
[    5.253268] imx492 30-001a: probing v4l2 sensor: pleno/alain/10_r35tri
[    5.475633] imx492 30-001a: tegracam sensor driver:imx492_v2.0.6
[    5.684514] imx492 30-001a: imx492_set_gain: val:1000000, gain:1, again:(1, 0), dgain:(1, 0)
[    5.686956] imx492 30-001a: imx492_write_reg: i2c write failed, 0x300b = 0
[    5.687154] imx492 30-001a: imx492_set_gain: GAIN control error
[    5.687326] imx492 30-001a: Error -121 in control hdl setup
[    5.687484] imx492 30-001a: Failed to init ctrls imx492
[    5.687630] imx492 30-001a: tegra camera subdev registration failed
[    5.687943] imx492: probe of 30-001a failed with error -121

and same output from i2cdetect/i2ctranfer:

nvidia@sdj-orindk-02:~$ sudo i2cdetect -y -r 30
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- 54 -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: UU -- -- -- -- -- -- --                         
nvidia@sdj-orindk-02:~$ sudo i2ctransfer -f -y 30 w2@0x1a 0x30 0x00 r256
Error: Sending messages failed: Remote I/O error
6

I2C usually is related with power, reset and oscillator. You may need use an oscilloscope to check if above three singals are correct.

7

just confirmed that issue is that pinout is different between adapter board and camera module.
need custom cables.