Paul Menzel (paulepanter@users.sourceforge.net) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5999
-gerrit
commit 33ad639820197a32e98e677cfd958bff1c9ccb5e Author: Stefan Reinauer reinauer@chromium.org Date: Wed Jan 8 15:20:59 2014 -0800
google/panther: Disable DEVSLP for SATA
Some SSD modules don't support DEVSLP correctly due to their firmware. Since the power savings are minimal, don't use DEVSLP to prevent potential problems. Some of the symptoms are that sometimes this causes USB devices to not work properly.
BUG=chrome-os-partner:23186, BRANCH=panther TEST=Boot tested on Panther
Change-Id: Iba3f721c73e0e760b6a9861ca23480ddb923df40 Signed-off-by: Stefan Reinauer reinauer@google.com Signed-off-by: Stefan Reinauer reinauer@chromium.org Reviewed-on: https://chromium-review.googlesource.com/181957 Reviewed-by: Duncan Laurie dlaurie@chromium.org --- src/mainboard/google/panther/devicetree.cb | 1 + 1 file changed, 1 insertion(+)
diff --git a/src/mainboard/google/panther/devicetree.cb b/src/mainboard/google/panther/devicetree.cb index f461c58..9fbe8e6 100644 --- a/src/mainboard/google/panther/devicetree.cb +++ b/src/mainboard/google/panther/devicetree.cb @@ -55,6 +55,7 @@ chip northbridge/intel/haswell register "ide_legacy_combined" = "0x0" register "sata_ahci" = "0x1" register "sata_port_map" = "0x1" + register "sata_devslp_disable" = "0x1"
register "sio_acpi_mode" = "0" register "sio_i2c0_voltage" = "0" # 3.3V