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drm/i915/xe3lpd: Update bandwidth parameters

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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>
Link: https://patchwork.freedesktop.org/patch/msgid/20250311-xe3lpd-bandwidth-update-v5-3-a95a9d90ad71@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
This commit is contained in:
Gustavo Sousa 2025-03-11 14:04:52 -03:00
parent d706998b6d
commit 4051c59e2a
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/i915/display/intel_bw.c
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@ -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);