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drm/amd/display: fix dcn315 memory channel count and width read

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[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>
This commit is contained in:
Dmytro Laktyushkin 2022-08-30 15:16:40 -04:00 committed by Alex Deucher
parent b261509952
commit cb0eca01ad
2 changed files with 7 additions and 3 deletions
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3
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
View File

@ -556,8 +556,7 @@ 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;

7
drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c
View File

@ -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 = {
@ -680,7 +681,11 @@ 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);