On 7/30/2015 10:48 PM, Hindman, Gavin wrote:
This applies to all CHV derivatives, including BSW?
Gavin Hindman
yes, this will apply to all CHV derivatives.
-----Original Message-----
From: Intel-gfx [mailto:intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Sivakumar Thulasimani
Sent: Thursday, July 30, 2015 1:45 AM
To: ville.syrjala@xxxxxxxxxxxxxxx; intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Subject: [PATCH] drm/i915: remove intermediate link rate entries for CHV
From: "Thulasimani,Sivakumar" <sivakumar.thulasimani@xxxxxxxxx>
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.thulasimani@xxxxxxxxx>
---
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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--
regards,
Sivakumar
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