[PATCH] drm: Fix DSC throughput mode 0 mask definition

[Siqueira, Rodrigo]

Commit d7cd0e05 introduced a change at DP_DSC_THROUGHPUT_MODE_0_170
which is not aligned with the spec. This commit replace 15 << 4 by
15 << 0 for DP_DSC_THROUGHPUT_MODE_0_170 in order to make it follow the
specification.

Cc: Harry Wentland <harry.wentland at amd.com>
Cc: Leo Li <sunpeng.li at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Nikola Cornij <nikola.cornij at amd.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Manasi Navare <manasi.d.navare at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Fixes: d7cd0e053b1 (drm/amd/display: Add 170Mpix/sec DSC throughput support)
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 include/drm/drm_dp_helper.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index cfadeeef8492..52024049c59e 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -306,7 +306,7 @@
 # define DP_DSC_THROUGHPUT_MODE_0_900       (12 << 0)
 # define DP_DSC_THROUGHPUT_MODE_0_950       (13 << 0)
 # define DP_DSC_THROUGHPUT_MODE_0_1000      (14 << 0)
-# define DP_DSC_THROUGHPUT_MODE_0_170       (15 << 4)
+# define DP_DSC_THROUGHPUT_MODE_0_170       (15 << 0) /* 1.4a */
 # define DP_DSC_THROUGHPUT_MODE_1_MASK      (0xf << 4)
 # define DP_DSC_THROUGHPUT_MODE_1_SHIFT     4
 # define DP_DSC_THROUGHPUT_MODE_1_UPSUPPORTED 0
-- 
2.23.0
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