diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index e72dd9a8d6bf..dbbd59171722 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -763,6 +763,16 @@ parse_mipi_config(struct drm_i915_private *dev_priv, return; } + /* + * These fields are introduced from the VBT version 197 onwards, + * so making sure that these bits are set zero in the previous + * versions. + */ + if (dev_priv->vbt.dsi.config->dual_link && bdb->version < 197) { + dev_priv->vbt.dsi.config->dl_dcs_cabc_ports = 0; + dev_priv->vbt.dsi.config->dl_dcs_backlight_ports = 0; + } + /* We have mandatory mipi config blocks. Initialize as generic panel */ dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID; } |