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

Signed-off-by: Jae Hyun Yoo <jae.hyun....@linux.intel.com>
Cc: Lee Jones <lee.jo...@linaro.org>
Cc: Rob Herring <robh...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Andrew Jeffery <and...@aj.id.au>
Cc: James Feist <james.fe...@linux.intel.com>
Cc: Jason M Biils <jason.m.bi...@linux.intel.com>
Cc: Joel Stanley <j...@jms.id.au>
Cc: Vernon Mauery <vernon.mau...@linux.intel.com>
---
 .../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..cb341e363add
--- /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. Address range of CPU
+              clients starts from 0x30 based on PECI specification.
+
+Example:
+       peci-bus@0 {
+               compatible = "vendor,soc-peci";
+               reg = <0x0 0x1000>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               peci-client@30 {
+                       compatible = "intel,peci-client";
+                       reg = <0x30>;
+               };
+
+               peci-client@31 {
+                       compatible = "intel,peci-client";
+                       reg = <0x31>;
+               };
+       };
-- 
2.18.0

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