[why]
Some SOC BB paramters may vary per SKU, and it does
not make sense for driver to hardcode these values.
This change was added for dcn30 and dcn301, but not
for dcn302
[how]
Parse the values from VBIOS if available, and use
them if valid
Fixes: 93669c8e48 ("drm/amd/display: get socBB from VBIOS")
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
---
.../amd/display/dc/dcn302/dcn302_resource.c | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
index fc2dea243d1b..f44814d15206 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
@@ -1101,6 +1101,26 @@ static bool init_soc_bounding_box(struct dc *dc, struct resource_pool *pool)
loaded_ip->max_num_dpp = pool->pipe_count;
loaded_ip->clamp_min_dcfclk = dc->config.clamp_min_dcfclk;
dcn20_patch_bounding_box(dc, loaded_bb);
+
+ if (dc->ctx->dc_bios->funcs->get_soc_bb_info) {
+ struct bp_soc_bb_info bb_info = { 0 };
+
+ if (dc->ctx->dc_bios->funcs->get_soc_bb_info(
+ dc->ctx->dc_bios, &bb_info) == BP_RESULT_OK) {
+ if (bb_info.dram_clock_change_latency_100ns > 0)
+ dcn3_02_soc.dram_clock_change_latency_us =
+ bb_info.dram_clock_change_latency_100ns * 10;
+
+ if (bb_info.dram_sr_enter_exit_latency_100ns > 0)
+ dcn3_02_soc.sr_enter_plus_exit_time_us =
+ bb_info.dram_sr_enter_exit_latency_100ns * 10;
+
+ if (bb_info.dram_sr_exit_latency_100ns > 0)
+ dcn3_02_soc.sr_exit_time_us =
+ bb_info.dram_sr_exit_latency_100ns * 10;
+ }
+ }
+
return true;
}
--
2.31.1
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