Kylene Jo Hall writes:
> The TPM is discovered differently on PPC64 because the device must be
> discovered through the device tree in order to open the proper holes in
> the io_page_mask for reading and writing in the low memory space. This
> does not happen automatically like most devices because the tpm is not a
> normal pci device and lives under the root node.
Please just do an ioremap on the physical address and use
read[bwl]/write[bwl] or ioread{8,16,32}/iowrite{8,16,32}, or else
persuade the firmware developers to put the tpm in the right place in
the device tree.
Thanks,
Paul.
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