From: Samson Tam <samson....@amd.com>
[Why]
Emulating passive dongle on USB-C port causes issue on some asics.
[How]
Check for DP_IS_USB_C flag in bios parser and propagate it to
encoder features flags. If DP_IS_USB_C flag is set and it is trying to
emulate passive dongle, then return fail.
Signed-off-by: Samson Tam <samson....@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet la...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
index 6f7af235dd79..b04ef576ec5a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
@@ -447,6 +447,8 @@ void dcn20_link_encoder_construct(
enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
bp_cap_info.DP_HBR3_EN;
enc10->base.features.flags.bits.HDMI_6GB_EN =
bp_cap_info.HDMI_6GB_EN;
+ enc10->base.features.flags.bits.DP_IS_USB_C =
+ bp_cap_info.DP_IS_USB_C;
} else {
DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS
with error code %d!\n",
__func__,
--
2.20.1
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