The RKL platform has different memory characteristics from past
platforms. Update the values used by our memory bandwidth calculations
accordingly.
Bspec: 53998
Cc: James Ausmus <james.ausmus@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_bw.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 4aa54fcb0629..c23401785f4a 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -176,6 +176,12 @@ static const struct intel_sa_info tgl_sa_info = {
.displayrtids = 256,
};
+static const struct intel_sa_info rkl_sa_info = {
+ .deburst = 16,
+ .deprogbwlimit = 20, /* GB/s */
+ .displayrtids = 128,
+};
+
static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa)
{
struct intel_qgv_info qi = {};
@@ -271,7 +277,9 @@ void intel_bw_init_hw(struct drm_i915_private *dev_priv)
if (!HAS_DISPLAY(dev_priv))
return;
- if (IS_GEN(dev_priv, 12))
+ if (IS_ROCKETLAKE(dev_priv))
+ icl_get_bw_info(dev_priv, &rkl_sa_info);
+ else if (IS_GEN(dev_priv, 12))
icl_get_bw_info(dev_priv, &tgl_sa_info);
else if (IS_GEN(dev_priv, 11))
icl_get_bw_info(dev_priv, &icl_sa_info);
--
2.24.1
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