On 06/18/13 13:25, Ezequiel Garcia wrote:
In the example below there's an extract of a device tree showing how
the internal-regs and pcie nodes can be represented:
#define MBUS_ID(target,attributes) (((target) << 24) | ((attributes) <<
16))
soc {
compatible = "marvell,armadaxp-mbus";
reg = <0 0xd0020000 0 0x100>, <0 0xd0020180 0 0x20>;
ranges = <0xffff0001 0 0 0xd0000000 0x100000 /* internal-regs
*/
0xffff0000 0 0 0xe0000000 0x8100000 /* pcie */
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
MBUS_ID(0x01, 0x2f) 0 0 0xf0000000 0x8000000>;
Ezequiel,
you should update PCIE above (and possibly anywhere else) too.
pcie-controller {
compatible = "marvell,armada-xp-pcie";
status = "okay";
device_type = "pci";
#address-cells = <3>;
#size-cells = <2>;
ranges =
<0x82000000 0 0x40000 0xffff0001 0x40000 0
0x00002000 /* Port 0.0 registers */
0x82000000 0 0x42000 0xffff0001 0x42000 0
0x00002000 /* Port 2.0 registers */
0x82000000 0 0x44000 0xffff0001 0x44000 0
0x00002000 /* Port 0.1 registers */
0x82000000 0 0x48000 0xffff0001 0x48000 0
0x00002000 /* Port 0.2 registers */
0x82000000 0 0x4c000 0xffff0001 0x4c000 0
0x00002000 /* Port 0.3 registers */
0x82000000 0 0x80000 0xffff0001 0x80000 0
0x00002000 /* Port 1.0 registers */
0x82000000 0 0x82000 0xffff0001 0x82000 0
0x00002000 /* Port 3.0 registers */
0x82000000 0 0xe0000000 0xffff0000 0 0
0x08000000 /* non-prefetchable memory */
0x81000000 0 0 0xffff0000 0x8000000 0
0x00100000>; /* downstream I/O */
Here for example.
Changes from v2:
* Replaced the PCIe mapping with 0xffff0002, to avoid using a representation
that might correspond to a possible window id.
Out of curiosity, how will these fake mappings play with LPAE? If you
extend possible address space to >32b the lower bits may belong to valid
addresses.
Maybe you can (already do?) ignore that because of the 32b address
restriction for internal registers IIRC Thomas mentioned?
Sebastian
_______________________________________________
devicetree-discuss mailing list
devicetree-discuss@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/devicetree-discuss
