diff options
| -rw-r--r-- | src/soc/intel/common/block/graphics/early_graphics.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/graphics/early_graphics.c b/src/soc/intel/common/block/graphics/early_graphics.c index 6f6a421e81..3ae7697de3 100644 --- a/src/soc/intel/common/block/graphics/early_graphics.c +++ b/src/soc/intel/common/block/graphics/early_graphics.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <delay.h> #include <device/pci.h> #include <drivers/intel/gma/libgfxinit.h> #include <intelblocks/early_graphics.h> @@ -49,4 +50,20 @@ void early_graphics_stop(void) return; gma_gfxstop(&ret); + + /* + * Temporary workaround + * + * It has been reported that the PEIM graphics driver may temporarily + * fail communication with the display if the time between libgfxinit + * turning off the displays and the PEIM driver initialization is too + * short. 200 ms has been identified as a safe delay. + * + * An investigation is in progress to come up with a better and long + * term solution. + * + * BUG:b:264526798 + */ + if (CONFIG(RUN_FSP_GOP)) + mdelay(200); } |