From adc62907a68081e4786e31c0725ca5de04afd77b Mon Sep 17 00:00:00 2001
From: Samuel Dionne-Riel <samuel@dionne-riel.com>
Date: Mon, 10 Jun 2019 21:31:20 -0400
Subject: [PATCH] linux: Enables support for the Allwinner Display Engine 2.0

---
 pkgs/os-specific/linux/kernel/common-config.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 61d349b7f0c..c461de4f5a8 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -709,6 +709,9 @@ let
       # Bump the maximum number of CPUs to support systems like EC2 x1.*
       # instances and Xeon Phi.
       NR_CPUS = freeform "384";
+    } // optionalAttrs (stdenv.hostPlatform.system == "aarch64-linux") {
+      # Enables support for the Allwinner Display Engine 2.0
+      SUN8I_DE2_CCU = whenAtLeast "4.13" yes;
     };
   };
 in