Does dtb change the LAW configuration (T2080RDB)?

[manoloruiz]

Hi,

I am using the T2080RDB. I want to change the memory location for a PCI device. I have changed the dtb. However, it does not work because the LAW register are not modified.

I want to know if I must to change uboot and dtb (both of them) in order to get a proper functionality.

BR

[bpe · Accepted solution]

Device Tree only reflects the local address map established by the bootloader. Linux does not change LAWs.

If you want to change LAW settings, do it in the board-specific code in u-Boot and adjust the Device Tree

accordingly.