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* [v2 1/2] drm/i915/icl: Ungate ddi clocks before IO enable
@ 2019-03-22 12:13 Vandita Kulkarni
  2019-03-22 12:13 ` [v2 2/2] drm/i915/icl: Fix port disable sequence for mipi-dsi Vandita Kulkarni
                   ` (3 more replies)
  0 siblings, 4 replies; 10+ messages in thread
From: Vandita Kulkarni @ 2019-03-22 12:13 UTC (permalink / raw)
  To: intel-gfx; +Cc: jani.nikula

IO enable sequencing needs ddi clocks enabled.
These clocks will be gated at a later point in
the enable sequence.

v2: Fix the commit header (uma)

Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
---
 drivers/gpu/drm/i915/icl_dsi.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index beb30d9..6a5b9fa 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -589,6 +589,13 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder,
 		val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
 	}
 	I915_WRITE(DPCLKA_CFGCR0_ICL, val);
+
+	val = I915_READ(DPCLKA_CFGCR0_ICL);
+	for_each_dsi_port(port, intel_dsi->ports) {
+		val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
+	}
+	I915_WRITE(DPCLKA_CFGCR0_ICL, val);
+
 	POSTING_READ(DPCLKA_CFGCR0_ICL);
 
 	mutex_unlock(&dev_priv->dpll_lock);
-- 
1.9.1

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^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2019-03-25  5:41 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-03-22 12:13 [v2 1/2] drm/i915/icl: Ungate ddi clocks before IO enable Vandita Kulkarni
2019-03-22 12:13 ` [v2 2/2] drm/i915/icl: Fix port disable sequence for mipi-dsi Vandita Kulkarni
2019-03-22 14:32   ` Ville Syrjälä
2019-03-22 15:37     ` Kulkarni, Vandita
2019-03-22 15:56       ` Ville Syrjälä
2019-03-25  5:41         ` Kulkarni, Vandita
2019-03-22 13:45 ` ✓ Fi.CI.BAT: success for series starting with [v2,1/2] drm/i915/icl: Ungate ddi clocks before IO enable Patchwork
2019-03-22 14:33 ` [v2 1/2] " Ville Syrjälä
2019-03-22 15:33   ` Kulkarni, Vandita
2019-03-23 11:01 ` ✓ Fi.CI.IGT: success for series starting with [v2,1/2] " Patchwork

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