Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5050
-gerrit
commit 37ca1861cad66aa399b1c667f282390cbd915e7a Author: Aaron Durbin adurbin@chromium.org Date: Wed Jan 15 11:59:10 2014 -0600
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 --- src/soc/intel/baytrail/gfx.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/src/soc/intel/baytrail/gfx.c b/src/soc/intel/baytrail/gfx.c index 6f78dac..4ed08c9 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 };