AM4378: the third-party IP databook for USB driver

user5928376

Part Number: AM4378
Other Parts Discussed in Thread: AMIC120

HI,

We create a new driver of USB for AM4378 and read the below manual.

"AM437x and AMIC120 ARM®Cortex-A9 Processors Technical Reference Manual 16.1 Introduction"

"For those who do wish to substantially modify the existing Linux USB
driver(s),or create new drivers, contact your TI sales representative
for more information on how to obtain the third-party IP databook
under NDA."

So, we have understood to need the third-party IP databook.

How do we do to get the third-party IP databook?

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

Hi,

As stated in the TRM, please contact your local TI sales representative directly.

0 Rogerio Almeida over 6 years ago in reply to Biser Gatchev-XID

TI__Mastermind 26205 points

For what OS your company is creating a new driver?
The purpose of this question is to understand why do you need a new driver.

0 user5928376 over 6 years ago in reply to Rogerio Almeida

Prodigy 80 points

Hi,

We is creating a new driver for TI-RTOS and our original OS.

0 Rogerio Almeida over 6 years ago in reply to user5928376

TI__Mastermind 26205 points

Thanks,

and what is the original OS?

0 Rogerio Almeida over 6 years ago in reply to Rogerio Almeida

TI__Mastermind 26205 points

May I add another question regarding the RTOS?
What features our driver for our RTOS is missing?

0 user5928376 over 6 years ago in reply to Rogerio Almeida

Prodigy 80 points

Hi,

To know that, we know need a IP data-book.
We are creating a xHCI driver for TI-RTOS. Has TI-RTOS already supported a xHCI driver?
If so, can we get that?

And, our original OS is our RTOS. Specification is our original.

0 Rogerio Almeida over 6 years ago in reply to user5928376

TI__Mastermind 26205 points

Thanks for the information.

We have USB driver UG here: software-dl.ti.com/.../index_device_drv.html

Please check it.

0 user5928376 over 6 years ago in reply to Rogerio Almeida

Prodigy 80 points

Hi,

Thank you for your information.

We got it and research the driver. So, we think that be able to use the driver.
And, we want to know how much OS resources that the driver consumes. Can you tell us that?
The OS resources we mean are a semaphore, task, ram/rom, others.

0 Rogerio Almeida over 6 years ago in reply to user5928376

TI__Mastermind 26205 points

Thanks for your reply.
Our SW team will reply here shortly.

0 lding over 6 years ago in reply to Rogerio Almeida

TI__Guru* 95265 points

Hi,

Sorry, we don't have those information for the USB driver. You may need to build a USB test example application for AM437x. Then look at the map file to see what semaphore, task, data and text section size for USB library. You may also use objdump (objdump.exe -x -w ***.out > ***.txt) to check this.

Regards, Eric

0 user5928376 over 6 years ago in reply to lding

Prodigy 80 points

HI,

Thank you for your reply. We got it.

And, we have another question.

We looked into your USB driver in PDK and found that we did not have the following features.

1. The USB driver doesn't support Interrupt transfer.

2. And, the USB driver doesn't support detach of USB device.

We would like you to provide information if there is helpful information.

0 lding over 6 years ago in reply to user5928376

TI__Guru* 95265 points

Hi,

What is the Processor SDK RTOS release you looked at for USB driver? Is it latest 5.2?
For Q1, the USB transfer uses interrupt. Can you elaborate what do you mean "USB driver doesn't support Interrupt transfer. " Or what is your usage case?
For Q2, We tested the USB plug/unplug multiple times we didn't see any issue.

Regards, Eric

0 user5928376 over 6 years ago in reply to lding

Prodigy 80 points

Hi,

We use the version 3.3, because this is our customer's request.

Do you mean that latest 5.2 supports Interrupt transfer and detach a device? We tested the USB unplug, but we seemed for your PDK's USB driver not to detect detachment.

And you know, USB has some transfer mode. That is, Interrupt, Bulk, Isochronous, Control transfer mode. We want to develop MTP(Media Transfer Protocol) on your USB driver. MTP use Interrupt transfer.

0 lding over 6 years ago in reply to user5928376

TI__Guru* 95265 points

Hi,

Rel 3.3 is too old. The plug/unplug support is fixed in Rel 5.2. The way we test it is unplug/plug multiple times to make sure the host PC can still detect the USB MSC device and R/W files to it.

How do you test 5.2 for unplug/plug? What CCS project you used?

For interrupt transfer support, right now the code is not done yet. We have a plan in progress for USB CDC support which uses interrupt transfer. You may need to see how that’s done in Linux driver for HID or CDC device.

Regards, Eric

0 user5928376 over 6 years ago in reply to lding

Prodigy 80 points

Hi,

But, we have to develop the driver in Rel 3.3 for our customer's request. Is there a way to use the driver of Rel 5.2 in Rel 3.3? Or Would you please tell us where to fix the driver to support unplug?

0 lding over 6 years ago in reply to user5928376

TI__Guru* 95265 points

Hi,

Using USB driver from PRSDK 5.2 with other drivers from PRSDK 3.3 is not recommended, there may be compatibility issues. Also there are many fixes and new features from the past several years. It is suggested to upgrade to latest.

If you do want to use the USB driver from 5.2, either:
1) download the PRSDK 5.2 and put the USB driver into your 3.3 project,
or
2) Download the external USB GIT: git.ti.com/.../usb and the fix is

Friday November 09 2018

PUSH22:06avatar
thanh-tran pushed 15 commits to keystone-rtos/usb:master. View diff

master changed from ab94ca0 to 1e5c219

COMMIT22:06avatar
thanh-tran tagged keystone-rtos/usb

DEV.USB_LLD.01.00.00.16: Created tag DEV.USB_LLD.01.00.00.16

Regards, Eric

0 user5928376 over 6 years ago in reply to lding

Prodigy 80 points

Hi,

Thank you for your reply. We check up the information from you.

Processors

Processors forum

AM4378: the third-party IP databook for USB driver