From: Michael Strauss Date: Fri, 27 Nov 2020 19:21:37 +0000 (-0500) Subject: drm/amd/display: Revert DCN2.1 dram_clock_change_latency update X-Git-Tag: io_uring-5.11-2020-12-23~116^2^2~16 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=3abad347c432b9f5904cfad40f417d5cff90300c;p=linux-2.6-block.git drm/amd/display: Revert DCN2.1 dram_clock_change_latency update [Why] New value breaks VSR on high refresh panels, reverting until a fix is developed Signed-off-by: Michael Strauss Signed-off-by: Sung Lee Reviewed-by: Yongqiang Sun Acked-by: Eryk Brol Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c index b000b43a820d..1c88d2edd381 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c @@ -296,7 +296,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn2_1_soc = { .num_banks = 8, .num_chans = 4, .vmm_page_size_bytes = 4096, - .dram_clock_change_latency_us = 11.72, + .dram_clock_change_latency_us = 23.84, .return_bus_width_bytes = 64, .dispclk_dppclk_vco_speed_mhz = 3600, .xfc_bus_transport_time_us = 4,