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[v3,3/3] drm/i915/xe3lpd: Update bandwidth parameters

Message ID 20250307-xe3lpd-bandwidth-update-v3-3-58bbe81f65bf@intel.com (mailing list archive)
State New
Headers show
Series drm/i915/xe3lpd: Update bandwidth parameters | expand

Commit Message

Gustavo Sousa March 7, 2025, 7:25 p.m. UTC 
Bandwidth parameters for Xe3_LPD have been updated with respect to
previous display releases. Encode them into xe3lpd_sa_info and use that
new struct.

Bspec: 68859
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bw.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 39644ae6932047f2b83f0ae34ed93f73a100685f..ee3e2fbd4a42a232b58f8e2344c134f6a1db1ac4 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -404,6 +404,13 @@  static const struct intel_sa_info xe2_hpd_sa_info = {
 	/* Other values not used by simplified algorithm */
 };
 
+static const struct intel_sa_info xe3lpd_sa_info = {
+	.deburst = 32,
+	.deprogbwlimit = 65, /* GB/s */
+	.displayrtids = 256,
+	.derating = 10,
+};
+
 static int icl_get_bw_info(struct intel_display *display, const struct intel_sa_info *sa)
 {
 	struct drm_i915_private *i915 = to_i915(display->drm);
@@ -752,7 +759,9 @@  void intel_bw_init_hw(struct intel_display *display)
 	if (!HAS_DISPLAY(display))
 		return;
 
-	if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)
+	if (DISPLAY_VER(display) >= 30)
+		tgl_get_bw_info(display, &xe3lpd_sa_info);
+	else if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)
 		xe2_hpd_get_bw_info(display, &xe2_hpd_sa_info);
 	else if (DISPLAY_VER(display) >= 14)
 		tgl_get_bw_info(display, &mtl_sa_info);