Commit bd031cd1 authored by Matt Atwood's avatar Matt Atwood Committed by Matt Roper
Browse files

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: default avatarMatt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: default avatarDnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20250613193146.3549862-5-dnyaneshwar.bhadane@intel.com
parent b2f7e30d

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

+10 −1
Original line number Diff line number Diff line
@@ -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)