From: Matt Roper Date: Mon, 4 May 2020 22:52:11 +0000 (-0700) Subject: drm/i915/rkl: Update memory bandwidth parameters X-Git-Tag: v5.9-rc1~134^2~18^2~176 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=affd7bb6169ef72985fa657b05c519f730d260f7;p=thirdparty%2Fkernel%2Flinux.git drm/i915/rkl: Update memory bandwidth parameters 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 Signed-off-by: Matt Roper Reviewed-by: Ville Syrjälä Signed-off-by: Lucas De Marchi Link: https://patchwork.freedesktop.org/patch/msgid/20200504225227.464666-7-matthew.d.roper@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index fef04e2d954ed..98bbe719cf4f7 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -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);