This applies to all CHV derivatives, including BSW?

Gavin Hindman


-----Original Message-----
From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf Of 
Sivakumar Thulasimani
Sent: Thursday, July 30, 2015 1:45 AM
To: ville.syrj...@linux.intel.com; intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH] drm/i915: remove intermediate link rate entries 
for CHV

From: "Thulasimani,Sivakumar" <sivakumar.thulasim...@intel.com>

CHV does not support intermediate link rates nor does it support HBR2. This 
patch removes those entries and returns HBR as the max link rate supported on 
CHV platform.

Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasim...@intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c |   11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c 
index 898dc74..5c68b17 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -95,9 +95,6 @@ static const int bxt_rates[] = { 162000, 216000, 243000, 
270000,
                                  324000, 432000, 540000 };
 static const int skl_rates[] = { 162000, 216000, 270000,
                                  324000, 432000, 540000 };
-static const int chv_rates[] = { 162000, 202500, 210000, 216000,
-                                243000, 270000, 324000, 405000,
-                                420000, 432000, 540000 };
 static const int default_rates[] = { 162000, 270000, 540000 };
 
 /**
@@ -1186,15 +1183,13 @@ intel_dp_source_rates(struct drm_device *dev, const int 
**source_rates)
        } else if (IS_SKYLAKE(dev)) {
                *source_rates = skl_rates;
                return ARRAY_SIZE(skl_rates);
-       } else if (IS_CHERRYVIEW(dev)) {
-               *source_rates = chv_rates;
-               return ARRAY_SIZE(chv_rates);
        }
 
        *source_rates = default_rates;
 
-       if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0)
-               /* WaDisableHBR2:skl */
+       /* WaDisableHBR2:skl */
+       if ((IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) ||
+               IS_CHERRYVIEW(dev))
                return (DP_LINK_BW_2_7 >> 3) + 1;
        else if (INTEL_INFO(dev)->gen >= 8 ||
            (IS_HASWELL(dev) && !IS_HSW_ULX(dev)))
--
1.7.9.5

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