From 3802b97bb6c7462f436ba90cd1913610941c81c3 Mon Sep 17 00:00:00 2001
From: Pascal Vizeli <pvizeli@syshack.ch>
Date: Mon, 22 Feb 2021 15:10:28 +0100
Subject: [PATCH] Add kernel docs about the device classes (#2607)

---
 supervisor/hardware/policy.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/supervisor/hardware/policy.py b/supervisor/hardware/policy.py
index 56ce993ab..6bbc0a85c 100644
--- a/supervisor/hardware/policy.py
+++ b/supervisor/hardware/policy.py
@@ -10,6 +10,7 @@ _LOGGER: logging.Logger = logging.getLogger(__name__)
 
 
 # fmt: off
+# https://www.kernel.org/doc/Documentation/admin-guide/devices.txt
 
 _CGROUPS: Dict[PolicyGroup, List[int]] = {
     PolicyGroup.UART: [