Thus wrote Martin Kaiser (lists@kaiser.cx):
Thus wrote rpjday@crashcourse.ca (rpjday@crashcourse.ca):
i'll need to access that device tree entry and effectively ioremap() slave0's physical address to a usable virtual address.
is there a canonical way to do this? short of manually extracting the appropriate device tree node and reading that property and calling ioremap()? is there a wrapper for that sort of operation, which i imagine must be fairly common?
I guess that of_iomap() does what you need here.
Oh, I missed your point. You were asking specifically about ranges, of_remap() searches for a reg property. I'm not aware of any generic function to parse ranges. All I found was of_pci_range_to_resource() which is specific to PCI... You could search the dt files for "ranges =", find the corresponding drivers and see how they parse the info. Sorry for the noise, Martin