[RFC] [PATCH] Device Tree on ARM platform

Peter Korsgaard jacmet at sunsite.dk
Thu May 28 04:26:43 EST 2009


>>>>> "Scott" == Scott Wood <scottwood at freescale.com> writes:

Hi,

 >> Just bundle the .dtb with the kernel and they'll always be in sync. I
 >> know this isn't really in the spirit of OF, but currently imho the
 >> only realistic solution.

 Scott> That removes the ability to use the device tree to pass information
 Scott> from the bootloader, such as MAC addresses and clock frequencies.  On
 Scott> the u-boot list, you'll find people trying such hacks (which were
 Scott> rightly NACKed) as passing the information in the device's volatile
 Scott> registers (which the Linux driver must then not reset) to deal with
 Scott> ARM Linux's lack of this ability.

No, with the multi-image support U-Boot has full access to the device
tree. E.G. I adjust the flash partition list defined in the .dtb in my
board's ft_board_setup() routine.

-- 
Bye, Peter Korsgaard



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