TDA4VEN-Q1: USB0 is unavailable

Hi Cesar,

Our expert is currently out-of-office today. Please expect a delay in response.

Regards,
Tanmay

Hi Cesar,

Sorry for the delayed response.

Can you apply the following changes in Linux :

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index 6169b2c9710f..ea74ab159848 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -668,7 +668,7 @@ p05-hog {
                        /* P05 - USB2.0_MUX_SEL */
                        gpio-hog;
                        gpios = <5 GPIO_ACTIVE_LOW>;
-                       output-high;
+                       output-low;

                };
                p01_hog: p01-hog { 
                
 &usb0 {
-       dr_mode = "otg";
+       dr_mode = "host";
        usb-role-switch;
 };

Additionally, please ensure that the DIP Switch SW2 has its pins 2 and 3 set to "0" which corresponds to Downstream Facing Port (DFP).

Regards

Gokul

Hi Gokul,

1. Your modification is incorrect. By default, it connects to usb0

gpios = <5 GPIO_ACTIVE_LOW>;
- output-high;
+ output-low;

Your configuration will actually output a high level;

I measured it with a multimeter and it indeed outputs a high level.

In this way, he will be connected USB1_HUB_DN4_D_P

2. Now I'm only making modifications

&usb0 {
- dr_mode = "otg";
+ dr_mode = "host";
usb-role-switch;
};

There is still no device-to-device insertion.

Regards,

Cesar

Hi Cesar,

• Can you add the gpio patch as well which I provided once and check as it is working on my end with that patch.
• Additionally, please ensure that the DIP Switch SW2 has its pins 2 and 3 set to "0" which corresponds to Downstream Facing Port (DFP).
• Also test by connecting the C type cable in both orientations(ie:connect in one orientation, then check. If not working, power off the board, change the orientation of the C type cable connected,power-on and check) as only one orientation is supported by the J722S board.

NOTE: Please try switching the orientation of type C cable  with and without the gpio patch as well.

Regards

Gokul

cesar.xu said:

3. When a usb2.0 USB flash drive is inserted into type C, The evm board did not detect device insertion.

Hello Cesar

    I tried on EVM, same scenario as you found, will investigate it

---------------------------------------------------------------

root@j722s-evm:~#
root@j722s-evm:~#
root@j722s-evm:~# lsusb -t
/: Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 480M
|__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/4p, 12M
/: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M
|__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/4p, 5000M
root@j722s-evm:~#

-----------------------------

Regards

   Semon

Hi Semon,

Can you try the steps I had suggested as there are issues on E3 board.

You can also use this E2E and JIRA  as reference:

E2E : +) J722SXH01EVM: USB C port issue - Processors - INTERNAL forum - Processors - INTERNAL - TI E2E support forums

JIRA :  LCPD-44150

Regards

Gokul

Hi Semon & Gokul,

May I ask if there are any new developments.

Regards,

Cesar

Hi Cesar,

Gokul Praveen said:

• Can you add the gpio patch as well which I provided once and check as it is working on my end with that patch.
• Additionally, please ensure that the DIP Switch SW2 has its pins 2 and 3 set to "0" which corresponds to Downstream Facing Port (DFP).
• Also test by connecting the C type cable in both orientations(ie:connect in one orientation, then check. If not working, power off the board, change the orientation of the C type cable connected,power-on and check) as only one orientation is supported by the J722S board.

NOTE: Please try switching the orientation of type C cable  with and without the gpio patch as well.

Can you try with these changes which I had suggested as it was working on my end with these changes.

Regards

Gokul