diff options
| author | Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> | 2022-06-16 10:15:22 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-07-05 16:12:00 -0400 |
| commit | 00fa7f031dd4b885175da390e24cb02f6a45977e (patch) | |
| tree | 15419dea937743f79a3eab26a9cb86f55c1b38bb /drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c | |
| parent | bbb6e5ae7ccfed7be06b5e8f99602100d4251d5f (diff) | |
drm/amd/display: Add basic infrastructure for enabling FAMS
We want to enable Firmware Assisted Memory (FAMS) Switching, but first,
we need to add the required code infrastructure in DC before allowing it
in amdgpu_dm.
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c index e247b2270b1d..dc60b835e938 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c @@ -797,6 +797,12 @@ void dcn20_calculate_dlg_params( context->bw_ctx.bw.dcn.clk.p_state_change_support = context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][context->bw_ctx.dml.vba.maxMpcComb] != dm_dram_clock_change_unsupported; + + /* Pstate change might not be supported by hardware, but it might be + * possible with firmware driven vertical blank stretching. + */ + context->bw_ctx.bw.dcn.clk.p_state_change_support |= context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching; + context->bw_ctx.bw.dcn.clk.dppclk_khz = 0; context->bw_ctx.bw.dcn.clk.dtbclk_en = is_dtbclk_required(dc, context); |