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-rw-r--r--Documentation/ABI/testing/sysfs-bus-platform12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-platform b/Documentation/ABI/testing/sysfs-bus-platform
index ff30728595ef..c4dfe7355c2d 100644
--- a/Documentation/ABI/testing/sysfs-bus-platform
+++ b/Documentation/ABI/testing/sysfs-bus-platform
@@ -42,3 +42,15 @@ Date: August 2021
Contact: Barry Song <song.bao.hua@hisilicon.com>
Description:
This attribute will show "msi" if <N> is a valid msi irq
+
+What: /sys/bus/platform/devices/.../modalias
+Description:
+ Same as MODALIAS in the uevent at device creation.
+
+ A platform device that it is exposed via devicetree uses:
+
+ - of:N`of node name`T`type`
+
+ Other platform devices use, instead:
+
+ - platform:`driver name`