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lenovo/t520: Fix ExpressCard hotplug 

Thinkpad T520 ExpressCard Slot PCIe lanes are connected to port 4.
Tested with Serial Port Card. Information read from schematic / lspci

Change-Id: I459943d427578d135f9aed1aa66da269ddfeee87
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-on: http://review.coreboot.org/6735
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
This commit is contained in:
Nicolas Reinecke 2014-08-22 15:10:49 +02:00 committed by Edward O'Callaghan
parent d2da65e3ab
commit 6d790f7305
2 changed files with 4 additions and 5 deletions
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2
src/mainboard/lenovo/t520/dsdt.asl
View File

@ -23,7 +23,7 @@
#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
#define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
#define RP03_IS_EXPRESSCARD 1
#define RP04_IS_EXPRESSCARD 1
#define HAVE_LCD_SCREEN 1
DefinitionBlock(

7
src/mainboard/lenovo/t520/mainboard.c
View File

@ -158,12 +158,11 @@ static void mainboard_init(device_t dev)
pc_keyboard_init();
/* Enable expresscard hotplug events. */
pci_write_config32(dev_find_slot(0, PCI_DEVFN(0x1c, 2)),
pci_write_config32(dev_find_slot(0, PCI_DEVFN(0x1c, 3)),
0xd8,
pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x1c, 2)), 0xd8)
pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x1c, 3)), 0xd8)
| (1 << 30));
pci_write_config16(dev_find_slot(0, PCI_DEVFN(0x1c, 2)),
pci_write_config16(dev_find_slot(0, PCI_DEVFN(0x1c, 3)),
0x42, 0x142);
}