From: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> [Why & How] If the driver has issues retrieving the MALL size for the specific hardware, it might fail since the current value is set to zero. This commit addresses this issue by adding a simple constant value to give the drive a chance to start. Acked-by: Wayne Lin <wayne.lin@xxxxxxx> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> --- .../gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c | 3 ++- .../gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c | 4 +++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c index ce1754cc1f46..1c657fe4a9bb 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c @@ -2048,7 +2048,8 @@ static bool dcn32_resource_construct( dc->caps.min_horizontal_blanking_period = 80; dc->caps.dmdata_alloc_size = 2048; dc->caps.mall_size_per_mem_channel = 4; - dc->caps.mall_size_total = 0; + /* total size = mall per channel * num channels * 1024 * 1024 */ + dc->caps.mall_size_total = dc->caps.mall_size_per_mem_channel * dc->ctx->dc_bios->vram_info.num_chans * 1048576; dc->caps.cursor_cache_size = dc->caps.max_cursor_size * dc->caps.max_cursor_size * 8; dc->caps.cache_line_size = 64; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c index 296a0a8e7145..6c8129734163 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c @@ -1697,7 +1697,9 @@ static bool dcn321_resource_construct( dc->caps.min_horizontal_blanking_period = 80; dc->caps.dmdata_alloc_size = 2048; dc->caps.mall_size_per_mem_channel = 4; - dc->caps.mall_size_total = 0; + /* total size = mall per channel * num channels * 1024 * 1024 */ + dc->caps.mall_size_total = dc->caps.mall_size_per_mem_channel * dc->ctx->dc_bios->vram_info.num_chans * 1048576; + dc->caps.cursor_cache_size = dc->caps.max_cursor_size * dc->caps.max_cursor_size * 8; dc->caps.cache_line_size = 64; dc->caps.cache_num_ways = 16; -- 2.37.3
