[PATCH linux dev-4.19 07/12] dt-bindings: mfd: Add a document for PECI client MFD

[Jae Hyun Yoo]

This commit adds a dt-bindings document for PECI client MFD.

Cc: Joel Stanley <joel at jms.id.au>
Cc: Andrew Jeffery <andrew at aj.id.au>
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo at linux.intel.com>
Reviewed-by: Rob Herring <robh at kernel.org>
---
 .../devicetree/bindings/mfd/intel-peci-client.txt  | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/intel-peci-client.txt

diff --git a/Documentation/devicetree/bindings/mfd/intel-peci-client.txt b/Documentation/devicetree/bindings/mfd/intel-peci-client.txt
new file mode 100644
index 000000000000..5d1d5d0a552f
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/intel-peci-client.txt
@@ -0,0 +1,34 @@
+* Intel PECI client bindings
+
+PECI (Platform Environment Control Interface) is a one-wire bus interface that
+provides a communication channel from PECI clients in Intel processors and
+chipset components to external monitoring or control devices. PECI is designed
+to support the following sideband functions:
+
+- Processor and DRAM thermal management
+- Platform Manageability
+- Processor Interface Tuning and Diagnostics
+- Failure Analysis
+
+Required properties:
+- compatible : Should be "intel,peci-client".
+- reg        : Should contain address of a client CPU. According to the PECI
+	       specification, client addresses start from 0x30.
+
+Example:
+	peci-bus at 0 {
+		compatible = "vendor,soc-peci";
+		reg = <0x0 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		peci-client at 30 {
+			compatible = "intel,peci-client";
+			reg = <0x30>;
+		};
+
+		peci-client at 31 {
+			compatible = "intel,peci-client";
+			reg = <0x31>;
+		};
+	};
-- 
2.7.4