linux-kernel - [PATCH v2 3/7] Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

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Message-Id: <20230316122741.577663-4-herve.codina@bootlin.com>
Date:   Thu, 16 Mar 2023 13:27:37 +0100
From:   Herve Codina <herve.codina@...tlin.com>
To:     Herve Codina <herve.codina@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Derek Kiernan <derek.kiernan@...inx.com>,
        Dragan Cvetic <dragan.cvetic@...inx.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        alsa-devel@...a-project.org,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH v2 3/7] Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

Document the "subordinate" sysfs attribute exposed by the pef2256
driver.

Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
 .../ABI/testing/sysfs-bus-platform-devices-pef2256   | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256

diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256 b/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
new file mode 100644
index 000000000000..95ba1ae55daf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
@@ -0,0 +1,12 @@
+What:		/sys/bus/platform/devices/*.pef2256/subordinate
+KernelVersion:	6.4
+Contact:	Herve Codina <herve.codina@...tlin.com>
+Description:
+		(RW) Controls whether the PEF2256 works as subordinate or main
+		device mode.
+
+		- 0: main device mode
+		- 1: subordinate mode
+
+		In subordinate device mode it synchronizes on line interface
+		clock signals. Otherwise, it synchronizes on internal clocks.
-- 
2.39.2