From: Oliver Logush <oliver.log...@amd.com>
[ Upstream commit 23e55639b87fb16a9f0f66032ecb57060df6c46c ]
[why]
The units of the time_per_pixel variable were incorrect, this had to be
changed for the code to properly function.
[how]
The change was very straightforward, only required one line of code to
be changed where the calculation was done.
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
Signed-off-by: Oliver Logush <oliver.log...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 81f583733fa8..12e92f620483 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -2461,7 +2461,7 @@ void dcn20_set_mcif_arb_params(
wb_arb_params->cli_watermark[k] =
get_wm_writeback_urgent(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
wb_arb_params->pstate_watermark[k] =
get_wm_writeback_dram_clock_change(&context->bw_ctx.dml, pipes, pipe_cnt) *
1000;
}
- wb_arb_params->time_per_pixel = 16.0 /
context->res_ctx.pipe_ctx[i].stream->phy_pix_clk; /* 4 bit fraction, ms */
+ wb_arb_params->time_per_pixel = 16.0 * 1000 /
(context->res_ctx.pipe_ctx[i].stream->phy_pix_clk / 1000); /* 4 bit fraction,
ms */
wb_arb_params->slice_lines = 32;
wb_arb_params->arbitration_slice = 2;
wb_arb_params->max_scaled_time =
dcn20_calc_max_scaled_time(wb_arb_params->time_per_pixel,
--
2.30.2
