From bd031cd19f5c5597716ccaa7e6e70e65721e5ff3 Mon Sep 17 00:00:00 2001 From: Matt Atwood Date: Sat, 14 Jun 2025 01:01:41 +0530 Subject: [PATCH] drm/i915/xe3lpd: Update bandwidth parameters for display version 30.02 Bandwidth parameters for WCL have been updated with respect to previous display releases. Encode them into xe3lpd_3002_sa_info and use that new struct. -v2: Resolve conflict to apply patch. Bspec: 68859 Signed-off-by: Matt Atwood Signed-off-by: Dnyaneshwar Bhadane Reviewed-by: Matt Roper Signed-off-by: Matt Roper Link: https://lore.kernel.org/r/20250613193146.3549862-5-dnyaneshwar.bhadane@intel.com --- drivers/gpu/drm/i915/display/intel_bw.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 6c2ab2e0dc91e..a515241d80dbd 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -420,6 +420,13 @@ static const struct intel_sa_info xe3lpd_sa_info = { .derating = 10, }; +static const struct intel_sa_info xe3lpd_3002_sa_info = { + .deburst = 32, + .deprogbwlimit = 22, /* GB/s */ + .displayrtids = 256, + .derating = 10, +}; + static int icl_get_bw_info(struct intel_display *display, const struct dram_info *dram_info, const struct intel_sa_info *sa) @@ -771,7 +778,9 @@ void intel_bw_init_hw(struct intel_display *display) if (!HAS_DISPLAY(display)) return; - if (DISPLAY_VER(display) >= 30) + if (DISPLAY_VERx100(display) >= 3002) + tgl_get_bw_info(display, dram_info, &xe3lpd_3002_sa_info); + else if (DISPLAY_VER(display) >= 30) tgl_get_bw_info(display, dram_info, &xe3lpd_sa_info); else if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx && dram_info->type == INTEL_DRAM_GDDR_ECC) -- 2.47.2