mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-10 12:53:04 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: update dpp/disp clock from smu clock table

Browse Source 
[Why]
The reason some high-resolution monitors fail to display properly
is that this platform does not support sufficiently high DPP and
DISP clock frequencies

[How]
Update DISP and DPP clocks from the smu clock table then DML can
filter these mode if not support.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Paul Hsieh <Paul.Hsieh@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Paul Hsieh
2025-07-23 11:51:42 +08:00
committed by Alex Deucher
parent 6d31602a9f
commit 2e72fdba8a
2 changed files with 33 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
View File

@@ -563,6 +563,7 @@ static void vg_clk_mgr_helper_populate_bw_params(
{
int i, j;
struct clk_bw_params *bw_params = clk_mgr->base.bw_params;
uint32_t max_dispclk = 0, max_dppclk = 0;
j = -1;
@@ -584,6 +585,15 @@ static void vg_clk_mgr_helper_populate_bw_params(
return;
}
/* dispclk and dppclk can be max at any voltage, same number of levels for both */
if (clock_table->NumDispClkLevelsEnabled <= VG_NUM_DISPCLK_DPM_LEVELS &&
clock_table->NumDispClkLevelsEnabled <= VG_NUM_DPPCLK_DPM_LEVELS) {
max_dispclk = find_max_clk_value(clock_table->DispClocks, clock_table->NumDispClkLevelsEnabled);
max_dppclk = find_max_clk_value(clock_table->DppClocks, clock_table->NumDispClkLevelsEnabled);
} else {
ASSERT(0);
}
bw_params->clk_table.num_entries = j + 1;
for (i = 0; i < bw_params->clk_table.num_entries - 1; i++, j--) {
@@ -591,11 +601,17 @@ static void vg_clk_mgr_helper_populate_bw_params(
bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].memclk;
bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].voltage;
bw_params->clk_table.entries[i].dcfclk_mhz = find_dcfclk_for_voltage(clock_table, clock_table->DfPstateTable[j].voltage);
/* Now update clocks we do read */
bw_params->clk_table.entries[i].dispclk_mhz = max_dispclk;
bw_params->clk_table.entries[i].dppclk_mhz = max_dppclk;
}
bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[j].fclk;
bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].memclk;
bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].voltage;
bw_params->clk_table.entries[i].dcfclk_mhz = find_max_clk_value(clock_table->DcfClocks, VG_NUM_DCFCLK_DPM_LEVELS);
bw_params->clk_table.entries[i].dispclk_mhz = find_max_clk_value(clock_table->DispClocks, VG_NUM_DISPCLK_DPM_LEVELS);
bw_params->clk_table.entries[i].dppclk_mhz = find_max_clk_value(clock_table->DppClocks, VG_NUM_DPPCLK_DPM_LEVELS);
bw_params->vram_type = bios_info->memory_type;
bw_params->num_channels = bios_info->ma_channel_number;

20
drivers/gpu/drm/amd/display/dc/dml/dcn301/dcn301_fpu.c
View File

@@ -326,7 +326,7 @@ void dcn301_fpu_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_p
struct dcn301_resource_pool *pool = TO_DCN301_RES_POOL(dc->res_pool);
struct clk_limit_table *clk_table = &bw_params->clk_table;
unsigned int i, closest_clk_lvl;
int j;
int j = 0, max_dispclk_mhz = 0, max_dppclk_mhz = 0;
dc_assert_fp_enabled();
@@ -338,6 +338,15 @@ void dcn301_fpu_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_p
dcn3_01_soc.num_chans = bw_params->num_channels;
ASSERT(clk_table->num_entries);
/* Prepass to find max clocks independent of voltage level. */
for (i = 0; i < clk_table->num_entries; ++i) {
if (clk_table->entries[i].dispclk_mhz > max_dispclk_mhz)
max_dispclk_mhz = clk_table->entries[i].dispclk_mhz;
if (clk_table->entries[i].dppclk_mhz > max_dppclk_mhz)
max_dppclk_mhz = clk_table->entries[i].dppclk_mhz;
}
for (i = 0; i < clk_table->num_entries; i++) {
/* loop backwards*/
for (closest_clk_lvl = 0, j = dcn3_01_soc.num_states - 1; j >= 0; j--) {
@@ -353,8 +362,13 @@ void dcn301_fpu_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_p
s[i].socclk_mhz = clk_table->entries[i].socclk_mhz;
s[i].dram_speed_mts = clk_table->entries[i].memclk_mhz * 2;
s[i].dispclk_mhz = dcn3_01_soc.clock_limits[closest_clk_lvl].dispclk_mhz;
s[i].dppclk_mhz = dcn3_01_soc.clock_limits[closest_clk_lvl].dppclk_mhz;
/* Clocks independent of voltage level. */
s[i].dispclk_mhz = max_dispclk_mhz ? max_dispclk_mhz :
dcn3_01_soc.clock_limits[closest_clk_lvl].dispclk_mhz;
s[i].dppclk_mhz = max_dppclk_mhz ? max_dppclk_mhz :
dcn3_01_soc.clock_limits[closest_clk_lvl].dppclk_mhz;
s[i].dram_bw_per_chan_gbps =
dcn3_01_soc.clock_limits[closest_clk_lvl].dram_bw_per_chan_gbps;
s[i].dscclk_mhz = dcn3_01_soc.clock_limits[closest_clk_lvl].dscclk_mhz;