Hi Team TUSB,
Looks like for the TUSB4041I.. “The TUSB4041I device provides pin-strap configuration for some features including battery charging support, and also provides customization though OTP ROM, I 2C EEPROM, or through an I 2C and SMBus slave interface for PID, VID, and custom port and phy configurations. Custom string support is also available when using an I2C EEPROM or the I 2C and SMBus slave interface.” So many ways to configure it.. w/ and w/o a CPU connection.
That said.. According to (https://e2e.ti.com/support/interface-group/interface/f/interface-forum/659122/tusb4041i-linux-driver ).. “The TUSB4041I is compliant to the USB specification, so it will automatically load the USB Hub class driver that is part of the Linux kernel. Same driver will work for all USB Hubs regardless of the manufacturer.”
So.. when a TUSB4041I is connected to an AM335 (via USB port) in a Linux-based system.. how is the TUSB4041I configured? Are any "external" config options required (like I2C.. OTP over I2C, etc)?
As a reference.. Looks like the 3P “variscite module” (https://www.variscite.com/product/system-on-module-som/cortex-a8/var-som-am33-cpu-ti-am335x-am3354-am3352/ ) may have the TUSB connected to the AM335 over I2C. Why would this be done? Is this "optional".. to allow more flexibility WRT setup/config of the TUSB device.. if required?
Thanks, Merril
Another kind of ~applicable forum post here..
