From: Dnyaneshwar Bhadane Date: Fri, 13 Jun 2025 19:31:45 +0000 (+0530) Subject: drm/i915/wcl: C10 phy connected to port A and B X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9d10de78a37f4f397de7662faa0c8ab54b6171c9;p=thirdparty%2Fkernel%2Flinux.git drm/i915/wcl: C10 phy connected to port A and B WCL added a c10 phy connected to port B. PTL code is currently restricting c10 to phy_a only. PTL doesn't have a PHY connected to PORT B; as such,there will never be a case where PTL uses PHY B. WCL uses PORT A and B with the C10 PHY.Reusing the condition for WCL and extending it for PORT B should not cause any issues for PTL. -v2: Reuse and extend PTL condition for WCL (Matt) Bspec: 73944 Signed-off-by: Dnyaneshwar Bhadane Reviewed-by: Suraj Kandpal Signed-off-by: Matt Roper Link: https://lore.kernel.org/r/20250613193146.3549862-9-dnyaneshwar.bhadane@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index 83c8df9dbc0c0..ed8e640b96b0a 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -39,7 +39,13 @@ bool intel_encoder_is_c10phy(struct intel_encoder *encoder) struct intel_display *display = to_intel_display(encoder); enum phy phy = intel_encoder_to_phy(encoder); - if (display->platform.pantherlake && phy == PHY_A) + /* PTL doesn't have a PHY connected to PORT B; as such, + * there will never be a case where PTL uses PHY B. + * WCL uses PORT A and B with the C10 PHY. + * Reusing the condition for WCL and extending it for PORT B + * should not cause any issues for PTL. + */ + if (display->platform.pantherlake && phy < PHY_C) return true; if ((display->platform.lunarlake || display->platform.meteorlake) && phy < PHY_C)