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cadd0126aa
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
23 lines
872 B
Text
23 lines
872 B
Text
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2008 Ronald G. Minnich <rminnich@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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{
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device_operations = "rs690_ht";
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};
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