TUSB9261-Q1: ARM Linux Support

Naina Katikala

Part Number: TUSB9261-Q1
Other Parts Discussed in Thread: AM4378, , TUSB9261

I'm trying to interface TUSB9261-Q1 SATA bridge with an AM4378 processor. I've successfully flashed TUSB9261-Q1 using the FlashBurner Software with the latest firmware v1.06, but I'm not able to detect the TUSB9261-Q1 on my Linux USB bus. I do have gpio control to turn the power on/off to TUSB9261-Q1, but it still does not detect it in the kernel.

Questions:

1. How does it detect the hard disk in the kernel?

2. How can I confirm if my kernel is configured right?

3. Is there any sysfs control?

4. How can I make the kernel auto detect the drive if it is connected?

And my lsusb output is:

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I'm assuming the bridge must show up in lsusb output if it is configured correctly.

Regards,

Naina Katikala

over 4 years ago

0 Malik Barton57 over 4 years ago

TI__Guru 64326 points

Hi Naina,

Correct first we want to see TUSB9261 show up on the USB tree in order to see the connected drive. Is there a schematic I can review? FYI, we do not have Linux support for this device. I can help with device specific questions but I cannot provide support on kernel level questions.

+1 Naina Katikala over 4 years ago in reply to Malik Barton57

Prodigy 10 points

Hi Malik,

I was able to resolve the issue yesterday. In our current schematic, the USB bus was being shared between an OTG port and the SATA bridge. For the OTG port, the USB_ID pin was left floating which put the bus in peripheral mode. Grounding that pin enabled host mode and I was able to detect the SATA bridge and any drives connected to it.

Thanks,

Naina

0 Malik Barton57 over 4 years ago in reply to Naina Katikala

TI__Guru 64326 points

Glad you were able to resolve the issue!

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TUSB9261-Q1: ARM Linux Support