On Fri, Mar 14, 2014 at 5:07 AM, Arnd Bergmann [off-list ref] wrote:

On Thursday 06 March 2014, Tanmay Inamdar wrote:

quoted

+             pcie0: pcie at 1f2b0000 {
+                     status = "disabled";
+                     device_type = "pci";
+                     compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+                     #interrupt-cells = <1>;
+                     #size-cells = <2>;
+                     #address-cells = <3>;
+                     reg = < 0x00 0x1f2b0000 0x0 0x00010000   /* Controller registers */
+                             0xe0 0xd0000000 0x0 0x00200000>; /* PCI config space */
+                     reg-names = "csr", "cfg";
+                     ranges = <0x01000000 0x00 0x00000000 0xe0 0x00000000 0x00 0x00010000   /* io */
+                               0x02000000 0x00 0x10000000 0xe0 0x10000000 0x00 0x80000000>; /* mem */
+                     dma-ranges = <0x42000000 0x40 0x00000000 0x40 0x00000000 0x40 0x00000000>;
+                     interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+                     interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1
+                                      0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1
+                                      0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1
+                                      0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>;
+                     clocks = <&pcie0clk 0>;
+             };

Is 0x40.0x00000000 the start of your RAM? I had expected RAM to start at 0.0,
and in that case the dma-ranges property would be wrong.

RAM starting address is 0x40_00000000.

        Arnd
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