diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index cf3f8f1ba6f7..4e74aa2f16bc 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1274,6 +1274,27 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n", port_name(port), info->hdmi_boost_level); } + + /* DP max link rate for CNL+ */ + if (bdb_version >= 216) { + switch (child->dp_max_link_rate) { + default: + case VBT_DP_MAX_LINK_RATE_HBR3: + info->dp_max_link_rate = 810000; + break; + case VBT_DP_MAX_LINK_RATE_HBR2: + info->dp_max_link_rate = 540000; + break; + case VBT_DP_MAX_LINK_RATE_HBR: + info->dp_max_link_rate = 270000; + break; + case VBT_DP_MAX_LINK_RATE_LBR: + info->dp_max_link_rate = 162000; + break; + } + DRM_DEBUG_KMS("VBT DP max link rate for port %c: %d\n", + port_name(port), info->dp_max_link_rate); + } } static void parse_ddi_ports(struct drm_i915_private *dev_priv, u8 bdb_version) |