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-rw-r--r--drivers/gpu/drm/i915/intel_crt.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 834847527982..b60cb76aae51 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -259,8 +259,14 @@ static bool intel_crt_compute_config(struct intel_encoder *encoder,
pipe_config->has_pch_encoder = true;
/* LPT FDI RX only supports 8bpc. */
- if (HAS_PCH_LPT(dev))
+ if (HAS_PCH_LPT(dev)) {
+ if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
+ DRM_DEBUG_KMS("LPT only supports 24bpp\n");
+ return false;
+ }
+
pipe_config->pipe_bpp = 24;
+ }
return true;
}