drm/i915/rkl: Update memory bandwidth parameters (affd7bb6) · Commits · 戴 / test

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@intel.com> Signed-off-by:

Matt Roper <matthew.d.roper@intel.com> Reviewed-by:

Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:

Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200504225227.464666-7-matthew.d.roper@intel.com

drivers/gpu/drm/i915/display/intel_bw.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -199,6 +199,12 @@ 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 = {};
		@@ -309,7 +315,9 @@ 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);

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