On Wednesday 07 May 2014 14:52:47 Kishon Vijay Abraham I wrote:

On Tuesday 06 May 2014 10:05 PM, Jason Gunthorpe wrote:

quoted

On Tue, May 06, 2014 at 07:03:51PM +0530, Kishon Vijay Abraham I wrote:

quoted

+Example:
+pcie at 51000000 {
+    compatible = "ti,dra7xx-pcie";
+    reg = <0x51002000 0x14c>, <0x51000000 0x2000>;
+    reg-names = "ti_conf", "rc_dbics";
+    interrupts = <0 232 0x4>, <0 233 0x4>;
+    #address-cells = >;
+    #size-cells = <2>;
+    device_type = "pci";
+    ti,device_type = >;
+    ranges = <0x00000800 0 0x20001000 0x20001000 0 0x00002000  /* Configuration Space */

Configuration space should not show up in the ranges, please don't
copy that mistake from other drivers, put it in reg.

But then it needs pcie-designware.c to be modified and it will be breaking
other platforms no?

I think the pcie-designware driver should be changed to allow either way.
Ideally we would deprecate the existing method in a way that for new front-ends
it doesn't work, but the old front-ends can still deal with it but also work
if you put it into the reg property.

	Arnd