diff options
| author | Subrata Banik <subratabanik@google.com> | 2023-10-16 14:06:27 +0530 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-10-18 05:47:24 +0000 |
| commit | 93ca15cc83ceb5f774a4ca9931cc7a3baea37bdb (patch) | |
| tree | 328c5888648b764f0c2b118258b8a4df5cd98d86 | |
| parent | 205f30bdfc8884966ff66c8d59d159e9325214c5 (diff) | |
soc/intel/{adl, mtl}: Avoid redundant display init by joining to MBUS
This patch ensures that the IGD joins the MBUS when the firmware splash
screen feature is enabled (aka BMP_LOGO config is enabled).
For ChromeOS platform, it prevents the i915 driver from reinitializing
the display, which can save up to 75ms-80ms of boot time and eliminate
a brief period of blank screen between the firmware splash screen and
the OS login prompt.
BUG=b:284799726
TEST=Able to build and boot google/rex.
Change-Id: I36af167afa902053a987602d494a8830ad9b1b1a
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
| -rw-r--r-- | src/soc/intel/alderlake/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/meteorlake/Kconfig | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig index 1002f5a382..d70526b6bc 100644 --- a/src/soc/intel/alderlake/Kconfig +++ b/src/soc/intel/alderlake/Kconfig @@ -82,6 +82,7 @@ config SOC_INTEL_ALDERLAKE select SOC_INTEL_COMMON_RESET select SOC_INTEL_CSE_SEND_EOP_LATE if !BOARD_GOOGLE_BRYA_COMMON select SOC_INTEL_CSE_SET_EOP + select SOC_INTEL_GFX_MBUS_JOIN if MAINBOARD_HAS_CHROMEOS && BMP_LOGO select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION select HAVE_INTEL_COMPLIANCE_TEST_MODE select SSE2 diff --git a/src/soc/intel/meteorlake/Kconfig b/src/soc/intel/meteorlake/Kconfig index 590e8b80e1..b1a1cadf73 100644 --- a/src/soc/intel/meteorlake/Kconfig +++ b/src/soc/intel/meteorlake/Kconfig @@ -89,6 +89,7 @@ config SOC_INTEL_METEORLAKE select SOC_INTEL_CSE_SEND_EOP_LATE if !MAINBOARD_HAS_CHROMEOS select SOC_INTEL_CSE_SET_EOP select SOC_INTEL_IOE_DIE_SUPPORT + select SOC_INTEL_GFX_MBUS_JOIN if MAINBOARD_HAS_CHROMEOS && BMP_LOGO select SOC_INTEL_GFX_NON_PREFETCHABLE_MMIO select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION select SSE2 |