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authorAaron Durbin <adurbin@chromium.org>2014-01-15 11:59:10 -0600
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-05-15 05:06:53 +0200
commit3549462a95c5d7b9450924a1c0ca54b992c81211 (patch)
tree86c7f2f134105f3d6560ef284ff55f4341d9e40a
parent469b5205c31eeb7f58e66aaec58ef824f2e090a5 (diff)
baytrail: enable graphics turbo
Though the limited documentation indicates the default is 0 for the gfx_turbo_disable bit, in practice that isn't true. Knock down the gfs_turbo_disable bit to enable graphics turbo mode. BUG=chrome-os-partner:25044 BRANCH=baytrail TEST=Built and booted. Added debug code to output SB_BIOS_CONFIG. Noted that bit 7 was set to 0. Change-Id: I11210c6a0b29765cb709a54d6ebd94211538807b Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182640 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/5050 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
-rw-r--r--src/soc/intel/baytrail/gfx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/gfx.c b/src/soc/intel/baytrail/gfx.c
index 6f78daca36..4ed08c93a3 100644
--- a/src/soc/intel/baytrail/gfx.c
+++ b/src/soc/intel/baytrail/gfx.c
@@ -212,6 +212,10 @@ static const struct reg_script gfx_init_script[] = {
REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9404, 0),
REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9408, 0),
REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x940c, 0),
+
+ /* Enable Gfx Turbo. */
+ REG_IOSF_RMW(IOSF_PORT_PMC, SB_BIOS_CONFIG,
+ ~SB_BIOS_CONFIG_GFX_TURBO_DIS, 0),
REG_SCRIPT_END
};