[Intel-gfx] [BXT MIPI PATCH v3 13/14] drm/i915/bxt: Remove DSP CLK_GATE programming for BXT

[Uma Shankar]

DSP CLK_GATE registers are specific to BYT and CHT.
Avoid programming the same for BXT platform.

v2: Rebased on latest drm nightly branch.

v3: Fixed Jani's review comments

Signed-off-by: Uma Shankar <uma.shankar at intel.com>
---
 drivers/gpu/drm/i915/intel_dsi.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 6a0071f..08bade2 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -631,9 +631,11 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder)
 
 	intel_dsi_clear_device_ready(encoder);
 
-	val = I915_READ(DSPCLK_GATE_D);
-	val &= ~DPOUNIT_CLOCK_GATE_DISABLE;
-	I915_WRITE(DSPCLK_GATE_D, val);
+	if (!IS_BROXTON(dev_priv->dev)) {
+		val = I915_READ(DSPCLK_GATE_D);
+		val &= ~DPOUNIT_CLOCK_GATE_DISABLE;
+		I915_WRITE(DSPCLK_GATE_D, val);
+	}
 
 	drm_panel_unprepare(intel_dsi->panel);
 
-- 
1.7.9.5