AMD cimx/sb800: Disconnect PCI bridge 0:14.4 from pins
Some GPIO pins are shared with PCI bridge 0:14.4.
As our PCI subsystem currently does not configure PCI bridges that are
marked disabled, but remain visible in the hardware, simply setting 0:14.4
disabled in the devicetree does not work here yet.
Change-Id: Ib9652e12a888e1d797d879d97737ba4101b7029a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8495
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Nicolas Reinecke <nr@das-labor.org>
Tested-by: build bot (Jenkins)
diff --git a/src/southbridge/amd/cimx/sb800/late.c b/src/southbridge/amd/cimx/sb800/late.c
index e017936..2125027 100644
--- a/src/southbridge/amd/cimx/sb800/late.c
+++ b/src/southbridge/amd/cimx/sb800/late.c
@@ -401,7 +401,7 @@
* 'PCIDisable' set to 1 to disable P2P bridge and enable PCI interface pins
* to function as GPIO {GPIO 35:0}.
*/
- if (dev->enabled)
+ if (!sb_chip->disconnect_pcib && dev->enabled)
RWMEM(ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REGEA, AccWidthUint8, ~BIT0, 0);
else
RWMEM(ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REGEA, AccWidthUint8, ~BIT0, BIT0);