From: Kun Yi <kunyi@google.com>
To: jdelvare@suse.com, linux@roeck-us.net, robh+dt@kernel.org,
mark.rutland@arm.com
Cc: Kun Yi <kunyi@google.com>,
openbmc@lists.ozlabs.org, joel@jms.id.au,
linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH linux hwmon-next v3 3/3] dt-bindings: (hwmon/sbtsi_tmep) Add SB-TSI hwmon driver bindings
Date: Sat, 4 Apr 2020 20:01:18 -0700 [thread overview]
Message-ID: <20200405030118.191950-4-kunyi@google.com> (raw)
In-Reply-To: <20200405030118.191950-1-kunyi@google.com>
Document device tree bindings for AMD SB-TSI emulated temperature
sensor.
Signed-off-by: Kun Yi <kunyi@google.com>
---
.../devicetree/bindings/hwmon/amd,sbtsi.txt | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/amd,sbtsi.txt
diff --git a/Documentation/devicetree/bindings/hwmon/amd,sbtsi.txt b/Documentation/devicetree/bindings/hwmon/amd,sbtsi.txt
new file mode 100644
index 000000000000..be7293c43c0e
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/amd,sbtsi.txt
@@ -0,0 +1,26 @@
+* Sideband interface Temperature Sensor Interface (SB-TSI) compliant
+AMD SoC temperature device.
+
+SB Temperature Sensor Interface (SB-TSI) is an SMBus compatible
+interface that reports AMD SoC's Ttcl (normalized temperature),
+and resembles a typical 8-pin remote temperature sensor's I2C interface
+to BMC. The emulated thermal sensor can report temperatures in increments of
+0.125 degrees, ranging from 0 to 255.875.
+
+Required properties:
+- compatible: manufacturer and chip name, should be
+ "amd,sbtsi",
+
+- reg: I2C bus address of the device as specified in Section 6.3.1 of the
+SoC register reference: The SB-TSI address is normally 98h for socket 0 and
+90h for socket 1, but it could vary based on hardware address select pins.
+
+[open source SoC register reference]:
+ https://www.amd.com/system/files/TechDocs/56255_OSRR.pdf
+
+Example:
+
+sbtsi@4c {
+ compatible = "amd,sbtsi";
+ reg = <0x4c>;
+};
--
2.26.0.292.g33ef6b2f38-goog
next prev parent reply other threads:[~2020-04-05 3:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-05 3:01 [PATCH linux hwmon-next v3 0/3] SB-TSI hwmon driver v3 Kun Yi
2020-04-05 3:01 ` [PATCH linux hwmon-next v3 1/3] hwmon: (sbtsi) Add basic support for SB-TSI sensors Kun Yi
2020-04-05 16:27 ` Guenter Roeck
2020-04-05 3:01 ` [PATCH linux hwmon-next v3 2/3] hwmon: (sbtsi) Add documentation Kun Yi
2020-04-05 3:01 ` Kun Yi [this message]
2020-04-05 15:48 ` [PATCH linux hwmon-next v3 3/3] dt-bindings: (hwmon/sbtsi_tmep) Add SB-TSI hwmon driver bindings Guenter Roeck
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