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-rw-r--r--Documentation/driver-api/firmware/fallback-mechanisms.rst5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/driver-api/firmware/fallback-mechanisms.rst b/Documentation/driver-api/firmware/fallback-mechanisms.rst
index d19354794e67..e557d6630330 100644
--- a/Documentation/driver-api/firmware/fallback-mechanisms.rst
+++ b/Documentation/driver-api/firmware/fallback-mechanisms.rst
@@ -81,11 +81,12 @@ and a file upload firmware into:
* /sys/$DEVPATH/loading
* /sys/$DEVPATH/data
+ * /sys/$DEVPATH/sig_data
To upload firmware you will echo 1 onto the loading file to indicate
you are loading firmware. You then cat the firmware into the data file,
-and you notify the kernel the firmware is ready by echo'ing 0 onto
-the loading file.
+optionally its signature file, and you notify the kernel the firmware is
+ready by echo'ing 0 onto the loading file.
The firmware device used to help load firmware using sysfs is only created if
direct firmware loading fails and if the fallback mechanism is enabled for your