[Intel-gfx] [PATCH] drm/i915/audio: Add 801Mhz clock entries to dp_aud_n_m table

Radhakrishna Sripada radhakrishna.sripada at intel.com
Thu Jun 7 19:20:13 UTC 2018


From: "Sripada, Radhakrishna" <radhakrishna.sripada at intel.com>

Expand the Maud/Naud table according to DP 1.4 spec to include entries for
810 MHz clock. This is required for audio to work with HBR3.

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
---
 drivers/gpu/drm/i915/intel_audio.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index 3ea566f99450..6d1c33066987 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -59,6 +59,7 @@
  */
 
 /* DP N/M table */
+#define LC_810M	810000
 #define LC_540M	540000
 #define LC_270M	270000
 #define LC_162M	162000
@@ -99,6 +100,15 @@ static const struct dp_aud_n_m dp_aud_n_m[] = {
 	{ 128000, LC_540M, 4096, 33750 },
 	{ 176400, LC_540M, 3136, 18750 },
 	{ 192000, LC_540M, 2048, 11250 },
+	{ 32000, LC_810M, 1024, 50625 },
+	{ 44100, LC_810M, 784, 28125 },
+	{ 48000, LC_810M, 512, 16875 },
+	{ 64000, LC_810M, 2048, 50625 },
+	{ 88200, LC_810M, 1568, 28125 },
+	{ 96000, LC_810M, 1024, 16875 },
+	{ 128000, LC_810M, 4096, 50625 },
+	{ 176400, LC_810M, 3136, 28125 },
+	{ 192000, LC_810M, 2048, 16875 },
 };
 
 static const struct dp_aud_n_m *
-- 
2.9.3



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