From 921055b4a8f5380d1be6e998908896cfa7246df1 Mon Sep 17 00:00:00 2001
From: Jonathan Rudenberg <jonathan@titanous.com>
Date: Tue, 4 Aug 2015 16:38:38 -0400
Subject: [PATCH] kernel: Enable DRM_LOAD_EDID_FIRMWARE

This allows specifying drm_kms_helper.edid_firmware to work around displays
that provide bad EDID data.

Documentation: https://www.osadl.org/Single-View.111+M5ec938a7b3b.0.html
---
 pkgs/os-specific/linux/kernel/common-config.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 7063017b3a8c..386004dad43a 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -141,6 +141,8 @@ with stdenv.lib;
   # Video configuration.
   # Enable KMS for devices whose X.org driver supports it.
   DRM_I915_KMS y
+  # Allow specifying custom EDID on the kernel command line
+  DRM_LOAD_EDID_FIRMWARE y
   ${optionalString (versionOlder version "3.9") ''
     DRM_RADEON_KMS? y
   ''}