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HPI interface from Linux on DM6467T

Roger 50250
Prodigy 60 points
I am trying to write a linux driver to use the HPI interface. Currently I am just trying to read the PID register to verify the peripheral. I can only get 0 back from address 0x1C67800 which I got from SPRS605B – JULY 2009 – REVISED JULY 2010 section 7.18.3 Is there any more information on how to access this peripheral?
  • 0
    Prodigy 60 points
    Sorry - I posted this to the wrong forum - I had intended to post it to the Embedded Linux forum. I am not sure how that happened. Is it possible to re-post on the correct forum? I am using U-Boot 2009.08 (Jun 21 2010 - 17:04:16) and the linux (which I have built from source) [ 0.000000] Linux version 2.6.38.4wity (roger@brox) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #2 PREEMPT Thu Jun 2 00:01:00 BST 2011 [ 0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177 [ 0.000000] CPU: VIVT data cache, VIVT instruction cache [ 0.000000] Machine: DaVinci DM646x EVM [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] DaVinci dm6467_rev3.x variant 0x1