[Intel-gfx] [PATCH] drm/i915: Skip DDI PLL selection for DSI

[Mika Kahola]

Skip DDI PLL selection if display type is DSI/MIPI.

Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d7de2a5..5da98b2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9902,8 +9902,13 @@ static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
 				      struct intel_crtc_state *crtc_state)
 {
-	if (!intel_ddi_pll_select(crtc, crtc_state))
-		return -EINVAL;
+	struct intel_encoder *intel_encoder =
+		intel_ddi_get_crtc_new_encoder(crtc_state);
+
+	if (intel_encoder->type != INTEL_OUTPUT_DSI) {
+		if (!intel_ddi_pll_select(crtc, crtc_state))
+			return -EINVAL;
+	}
 
 	crtc->lowfreq_avail = false;
 
-- 
1.9.1