From: Suraj Kandpal <suraj.kandpal@intel.com>
Date: Sat, 1 Nov 2025 03:24:58 +0000 (+0530)
Subject: drm/i915/ltphy: Update the ltpll config table value for eDP
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4f1118bf96e3efb04bfa07831a1d0eec6e3caa7e;p=thirdparty%2Fkernel%2Flinux.git

drm/i915/ltphy: Update the ltpll config table value for eDP

When we get the eDP tables we reuse dp tables for some data rates.
We need to modify the 3rd config value of this table to 1 instead
of 0 since that is the only difference in the dp and edp table for
that particular data rate.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patch.msgid.link/20251101032513.4171255-11-suraj.kandpal@intel.com
---

diff --git a/drivers/gpu/drm/i915/display/intel_lt_phy.c b/drivers/gpu/drm/i915/display/intel_lt_phy.c
index ece81e8d558dd..892dea3b975fe 100644
--- a/drivers/gpu/drm/i915/display/intel_lt_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_lt_phy.c
@@ -1225,6 +1225,10 @@ intel_lt_phy_pll_calc_state(struct intel_crtc_state *crtc_state,
 	for (i = 0; tables[i]; i++) {
 		if (crtc_state->port_clock == tables[i]->clock) {
 			crtc_state->dpll_hw_state.ltpll = *tables[i];
+			if (intel_crtc_has_dp_encoder(crtc_state)) {
+				if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+					crtc_state->dpll_hw_state.ltpll.config[2] = 1;
+			}
 			return 0;
 		}
 	}