diff options
Diffstat (limited to 'src/mainboard/lenovo/t420')
| -rw-r--r-- | src/mainboard/lenovo/t420/cmos.layout | 1 | ||||
| -rw-r--r-- | src/mainboard/lenovo/t420/romstage.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t420/cmos.layout b/src/mainboard/lenovo/t420/cmos.layout index 5a9e570c3f..f55c2037d5 100644 --- a/src/mainboard/lenovo/t420/cmos.layout +++ b/src/mainboard/lenovo/t420/cmos.layout @@ -129,6 +129,7 @@ enumerations 11 6 224M 12 0 Integrated Only 12 1 Discrete Only +12 2 Dual Graphics 13 0 Disable 13 1 AC and battery 13 2 AC only diff --git a/src/mainboard/lenovo/t420/romstage.c b/src/mainboard/lenovo/t420/romstage.c index 36e83a3c72..bef256200e 100644 --- a/src/mainboard/lenovo/t420/romstage.c +++ b/src/mainboard/lenovo/t420/romstage.c @@ -30,6 +30,9 @@ static void hybrid_graphics_init(void) early_hybrid_graphics(&igd, &peg); + if (peg && igd) + return; + /* Hide disabled devices */ reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN); reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD); |