linux-kernel - [PATCH linux hwmon-next v1 2/3] hwmon: (sbtsi) Add documentation

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Message-Id: <20200319224812.202013-3-kunyi@google.com>
Date:   Thu, 19 Mar 2020 15:48:11 -0700
From:   Kun Yi <kunyi@...gle.com>
To:     jdelvare@...e.com, linux@...ck-us.net, robh+dt@...nel.org,
        mark.rutland@....com
Cc:     Kun Yi <kunyi@...gle.com>, openbmc@...ts.ozlabs.org,
        joel@....id.au, linux-hwmon@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH linux hwmon-next v1 2/3] hwmon: (sbtsi) Add documentation

Document the SB-TSI sensor interface driver.

Signed-off-by: Kun Yi <kunyi@...gle.com>
---
 Documentation/hwmon/sbtsi_temp.rst | 33 ++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/hwmon/sbtsi_temp.rst

diff --git a/Documentation/hwmon/sbtsi_temp.rst b/Documentation/hwmon/sbtsi_temp.rst
new file mode 100644
index 000000000000..f5addb72d13f
--- /dev/null
+++ b/Documentation/hwmon/sbtsi_temp.rst
@@ -0,0 +1,33 @@
+Kernel driver sbtsi_temp
+==================
+
+Supported hardware:
+
+  * Sideband interface (SBI) Temperature Sensor Interface (SB-TSI)
+    compliant AMD SoC temperature device.
+
+    Prefix: 'sbtsi_temp'
+
+    Addresses scanned: This driver doesn't support address scanning.
+
+    Datasheet: The SB-TSI interface and protocol is available as part of
+               the open source SoC register reference at:
+
+	       https://www.amd.com/system/files/TechDocs/56255_OSRR.pdf
+
+               The Advanced Platform Management Link (APML) Specification is
+               available at:
+
+	       http://developer.amd.com/wordpress/media/2012/10/41918.pdf
+
+Author: Kun Yi <kunyi@...gle.com>
+
+Description
+-----------
+
+The SBI temperature sensor interface (SB-TSI) is an emulation of the software
+and physical interface of a typical 8-pin remote temperature sensor (RTS) on
+AMD SoCs. It implements one temperature sensor with readings and limit
+registers encode the temperature in increments of 0.125 from 0 to 255.875.
+Limits can be set through the writable thresholds, and if reached will trigger
+corresponding alert signals.
-- 
2.25.1.696.g5e7596f4ac-goog