From 19c0c04f614945bed1bca0e2eba8e7faaa6c7d0e Mon Sep 17 00:00:00 2001
From: Yegor Timoshenko <yegortimoshenko@gmail.com>
Date: Wed, 27 Dec 2017 21:39:31 +0000
Subject: apple/macbook-air/4: enable RC6p, RC6pp GPU sleep states

---
 common/cpu/intel/sandy-bridge/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 common/cpu/intel/sandy-bridge/default.nix

(limited to 'common')

diff --git a/common/cpu/intel/sandy-bridge/default.nix b/common/cpu/intel/sandy-bridge/default.nix
new file mode 100644
index 000000000000..682815cee473
--- /dev/null
+++ b/common/cpu/intel/sandy-bridge/default.nix
@@ -0,0 +1,9 @@
+{
+  imports = [ ../. ];
+
+  # Enables RC6, RC6p and RC6pp.
+  # Last two are only available on Sandy Bridge CPUs (circa 2011).
+  boot.kernelParams = [
+    "i915.enable_rc6=7"
+  ];
+}
-- 
cgit 1.4.1