On Thu, 16 Apr 2015, Cormac O'Brien wrote:
The mac99 machine does list a PIC:
0 > dev /pci/mac-io/interrupt-controller ok
0 > .properties
name "interrupt-controller"
device_type "open-pic"
compatible "chrp,open-pic"
built-in <empty>
reg 00040000 00040000
#interrupt-cells 2
#address-cells 0
interrupt-controller <empty>
clock-frequency 3f940a
This location and property list is identical to the Mac-on-Linux device tree
and the device tree of a UniNorth machine that Alex sent me (the tree, not the
machine). So it seems that the mac99 PIC is implemented correctly but has no
interrupts registered.
I can't add anything to the interrupt question but for the other missing
device tree properties like reservation-granule-size I've collected some
links with dumps of the machine mac99 should try to emulate earlier here:
http://patchwork.ozlabs.org/patch/330550/
Look at links in the patch comments, the actual patch was found not to be
useful but the device tree dumps might serve as a reference to see how it
looks on real hardware.
Unfortunately that's all I have now hoping it might help with some of
those errors.
Regards,
BALATON Zoltan
