[coreboot-gerrit] New patch to review for coreboot: 5a7783a baytrail: enable graphics turbo

[Aaron Durbin (adurbin@google.com)]

Aaron Durbin (adurbin at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5050

-gerrit

commit 5a7783a4fa799c39814710fe9aad5f6b7caf2331
Author: Aaron Durbin <adurbin at 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 at chromium.org>
    Reviewed-on: https://chromium-review.googlesource.com/182640
    Reviewed-by: Duncan Laurie <dlaurie at 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 37fdc70..3c779e1 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
 };