linux-kernel - [PATCH 17/17] ABI: sysfs-bus-platform: add modalias description

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Message-Id: <9cdebbad008886b1d09f5f3ac5d88bee19f08d97.1632750608.git.mchehab+huawei@kernel.org>
Date:   Mon, 27 Sep 2021 15:59:50 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "Jonathan Corbet" <corbet@....net>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 17/17] ABI: sysfs-bus-platform: add modalias description

Define the modalias parameter for platform devices, including
the ones exposed via devicetree.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---

See [PATCH 00/17] at: https://lore.kernel.org/all/cover.1632750608.git.mchehab+huawei@kernel.org/

 Documentation/ABI/testing/sysfs-bus-platform | 12 ++++++++++++
 1 file changed, 12 insertions(+)

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@...ilicon.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`
-- 
2.31.1