Re: [U-Boot] rpi USB address question

Hello Simon,

On Mon, 6 Jul 2015 06:35:23 -0600, Simon Glass sjg@chromium.org wrote:

Hi Stephen,

I see in the kernel device tree that the rpi uses address 0x7e980000 for the DWC2 USB controller. But in U-Boot CONFIG_USB_DWC2_REG_ADDR is set to 0x20980000. Is there some sort of translation going on here?

https://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Periphera...

Section 1.2.3 / page 6

"Physical addresses range from 0x20000000 to 0x20FFFFFF for peripherals. The bus addresses for peripherals are set up to map onto the peripheral bus address range starting at 0x7E000000. Thus a peripheral advertised here at bus address 0x7Ennnnnn is available at physical address 0x20nnnnnn"

Amicalement,