There are some interesting issues here. The enables for the various
devices are a global bitmask:
Define port_enable, (bit map): GFX(2,3), GPP(4,5,6,7)
But v3 would allow us to not have the bit mask. OTOH, we would end up
with 3 .dts files for the pcie ports for this enable; good or bad?
GOOD --> highly custom configuration possible for each port
BAD --> 3 .dts files
Part of the issue is that the link from the dts to the device operations
structure is done as follows:
struct device_operations sb600_usb2 = {
.id = {.type = DEVICE_ID_PCI,
{.pci = {.vendor = PCI_VENDOR_ID_ATI,
.device = PCI_DEVICE_ID_ATI_SB600_USB2}}},
And this structure is named in the .dts for that device_operations:
{
device_operations = "sb600_usb2";
};
requiring a different dts node for each set of device_operations.
The device tree compiler generates the code to create these connections
and puts that code into the the static_tree.c file.
Having a .dts file for each port gives us a lot of flexibility; but is
it too inconvenient? This is an unresolved problem; unhandled at present
for the *6* USB ports for the sb600.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@886 f3766cd6-281f-0410-b1cd-43a5c92072e9
