diff options
| author | Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> | 2022-08-30 15:16:40 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-19 15:09:44 -0400 |
| commit | 62f0576c42993a442ae722fe2e67a140e4669945 (patch) | |
| tree | 9323fb825098b2a333bc7de67b7fe72c71668827 /drivers/gpu/drm/amd/display/dc | |
| parent | 22c42b0ec225c92db33e4b3045ad15baf1427cff (diff) | |
| download | linux-stable-62f0576c42993a442ae722fe2e67a140e4669945.tar.gz linux-stable-62f0576c42993a442ae722fe2e67a140e4669945.tar.bz2 linux-stable-62f0576c42993a442ae722fe2e67a140e4669945.zip | |
drm/amd/display: fix dcn315 memory channel count and width read
[Why & How]
Correctly set ddr5 channel width to 8 bytes
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c | 7 |
2 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c index 14071aef5eab..dd6abfba9253 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c @@ -561,8 +561,7 @@ static void dcn315_clk_mgr_helper_populate_bw_params( ASSERT(bw_params->clk_table.entries[i-1].dcfclk_mhz); bw_params->vram_type = bios_info->memory_type; bw_params->num_channels = bios_info->ma_channel_number; - if (!bw_params->num_channels) - bw_params->num_channels = 2; + bw_params->dram_channel_width_bytes = bios_info->memory_type == 0x22 ? 8 : 4; for (i = 0; i < WM_SET_COUNT; i++) { bw_params->wm_table.entries[i].wm_inst = i; diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c index 43230709bd11..b6e99eefe869 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c @@ -291,6 +291,7 @@ static struct _vcs_dpi_soc_bounding_box_st dcn3_15_soc = { .do_urgent_latency_adjustment = false, .urgent_latency_adjustment_fabric_clock_component_us = 0, .urgent_latency_adjustment_fabric_clock_reference_mhz = 0, + .num_chans = 4, }; struct _vcs_dpi_ip_params_st dcn3_16_ip = { @@ -688,7 +689,11 @@ void dcn315_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param dcn3_15_ip.max_num_otg = dc->res_pool->res_cap->num_timing_generator; dcn3_15_ip.max_num_dpp = dc->res_pool->pipe_count; - dcn3_15_soc.num_chans = bw_params->num_channels; + + if (bw_params->num_channels > 0) + dcn3_15_soc.num_chans = bw_params->num_channels; + if (bw_params->dram_channel_width_bytes > 0) + dcn3_15_soc.dram_channel_width_bytes = bw_params->dram_channel_width_bytes; ASSERT(clk_table->num_entries); |