UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/amd/display: Raise dispclk value for dce11 

[Why]
The visual corruption due to low display clock value.
Observed on Carrizo 4K@60Hz.

[How]
There was earlier patch for dce_update_clocks:
Adding +15% workaround also to to dce11_update_clocks

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2019-01-28 10:59:34 -05:00 committed by Alex Deucher
parent d2f0b53bda
commit 8852ae9a82
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
View File

@ -662,6 +662,11 @@ static void dce11_update_clocks(struct clk_mgr *clk_mgr,
{
struct dce_clk_mgr *clk_mgr_dce = TO_DCE_CLK_MGR(clk_mgr);
struct dm_pp_power_level_change_request level_change_req;
int patched_disp_clk = context->bw.dce.dispclk_khz;
/*TODO: W/A for dal3 linux, investigate why this works */
if (!clk_mgr_dce->dfs_bypass_active)
patched_disp_clk = patched_disp_clk * 115 / 100;
level_change_req.power_level = dce_get_required_clocks_state(clk_mgr, context);
/* get max clock state from PPLIB */
@ -671,9 +676,9 @@ static void dce11_update_clocks(struct clk_mgr *clk_mgr,
clk_mgr_dce->cur_min_clks_state = level_change_req.power_level;
}
if (should_set_clock(safe_to_lower, context->bw.dce.dispclk_khz, clk_mgr->clks.dispclk_khz)) {
context->bw.dce.dispclk_khz = dce_set_clock(clk_mgr, context->bw.dce.dispclk_khz);
clk_mgr->clks.dispclk_khz = context->bw.dce.dispclk_khz;
if (should_set_clock(safe_to_lower, patched_disp_clk, clk_mgr->clks.dispclk_khz)) {
context->bw.dce.dispclk_khz = dce_set_clock(clk_mgr, patched_disp_clk);
clk_mgr->clks.dispclk_khz = patched_disp_clk;
}
dce11_pplib_apply_display_requirements(clk_mgr->ctx->dc, context);
}