On Feb 16, 2009, at 12:12 PM, Scott Wood wrote:
On Mon, Feb 16, 2009 at 10:58:42AM -0600, Kumar Gala wrote:
On Freescale open-pic controllers we have a number of additional
features not spec'd per openpic. (additional timers, perf mon, PCIe
msi, message interrupts, ...). The problem is how to identify these
features in the device tree.
How about adding compatible = "fsl,CHIP-mpic", "fsl,mpic" (or
something
similar) to the mpic node?
For example we have:
m...@41600 {
compatible = "fsl,mpc8572-msi", "fsl,mpic-
msi";
reg = <0x41600 0x80>;
msi-available-ranges = <0 0x100>;
interrupts = <
0xe0 0
0xe1 0
0xe2 0
0xe3 0
0xe4 0
0xe5 0
0xe6 0
0xe7 0>;
interrupt-parent = <&mpic>;
};
How much of that node's content is going to differ from one Freescale
MPIC to another?
For MSI I doubt any. I think on some parts we might have two (or
more) groups of MSIs.
However I want to be able to handle timers and the slightly more
generic message interrupts.
- k
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