diff options
| author | Matt DeVillier <matt.devillier@gmail.com> | 2018-02-11 01:17:01 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-03-14 11:16:27 +0000 |
| commit | 681ef51d731617a0a4d5b604d561acdecb9c9cfa (patch) | |
| tree | ba6a848963f848960e7a6eb8b947af30e2236e57 /src/drivers/intel/gma/Kconfig | |
| parent | 3ab36b84f721009e14c230c370bd90e05d47856c (diff) | |
| download | coreboot-681ef51d731617a0a4d5b604d561acdecb9c9cfa.tar.xz | |
drivers/intel/gma: fix opregion SCI register for Atom platforms
Most Intel platforms use separate registers for software-based
SMI (0xe0) and SCI (0xe8), but Atom-based platforms use a single
combined register (0xe0) for both. Adjust opregion implementation
to use the correct register for Atom-based platforms.
Test: Boot Windows on Atom-based ChromeOS device with Tianocore
payload and non-VBIOS graphics init; observe Intel display
driver loaded correctly and internal display not blank.
(requires additional change for Atom platforms to select
CONFIG_INTEL_GMA_SWSMISCI)
Change-Id: I636986226ff951dae637dca5bc3ad0e023d94243
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/23696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/drivers/intel/gma/Kconfig')
| -rw-r--r-- | src/drivers/intel/gma/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig index a4b8a4a161..9e2872bb6c 100644 --- a/src/drivers/intel/gma/Kconfig +++ b/src/drivers/intel/gma/Kconfig @@ -47,6 +47,13 @@ config INTEL_GMA_SSC_ALTERNATE_REF supported platform with a choice seems to be Pineview, where the alternative is 100MHz vs. the default 96MHz. +config INTEL_GMA_SWSMISCI + bool + default n + help + Select this option for Atom-based platforms which use the SWSMISCI + register (0xe0) rather than the SWSCI register (0xe8). + config GFX_GMA_ANALOG_I2C_HDMI_B bool |