Hi Steven,

On 8/20/2013 14:04, Steven Rosenberg wrote:

Hi Bo,

To keep it simple, we need a microcontroller driver that accesses a few peripherals on the board, not just Ethernet(GMAC), also UART, GPIO, I2C, etc. No human intervention. One boots on power up and the driver would need to load and run at boot time and access the hardware (hopefully by interfacing with existing dedicated drivers or by replacing them).

I think the peripherals you mentioned are working with the mainline u-boot. If the one you tested doesn't work, please just let us know that.

Hence the questions on creating a device driver under uboot. If you can point to specific documentation (possibly a miscellaneous driver category) we would greatly appreciate it. Creating a device tree file from scratch (because atmel did not provide one) seemed like a good deal of work without proper examples and we were looking for more tutorial.

Thank you for your help.

With Best Regards.

Steven.

Best Regards, Bo Shen