[PATCH v8 01/12] dt-bindings: Add a document of PECI subsystem
From: Jae Hyun Yoo <hidden>
Date: 2018-09-18 21:51:58
Also in:
linux-arm-kernel, linux-aspeed, linux-devicetree, linux-hwmon, lkml, openbmc
Subsystem:
open firmware and flattened device tree bindings, peci subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Iwona Winiarska, Linus Torvalds
This commit adds a document of generic PECI bus, adapter and client driver. Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Andrew Jeffery <redacted> Cc: Joel Stanley <joel@jms.id.au> Signed-off-by: Jae Hyun Yoo <redacted> Reviewed-by: Haiyue Wang <redacted> Reviewed-by: James Feist <redacted> Reviewed-by: Vernon Mauery <redacted> --- .../devicetree/bindings/peci/peci.txt | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/peci/peci.txt
diff --git a/Documentation/devicetree/bindings/peci/peci.txt b/Documentation/devicetree/bindings/peci/peci.txt
new file mode 100644
index 000000000000..864b7ab4e9fa
--- /dev/null
+++ b/Documentation/devicetree/bindings/peci/peci.txt@@ -0,0 +1,43 @@ +Generic device tree configuration for PECI adapters +=================================================== + +Required properties: +- #address-cells : Should be <1>. Read more about client addresses below. +- #size-cells : Should be <0>. Read more about client addresses below. + +The cells properties above define that an address of CPU clients of a PECI bus +are described by a single value. + +Example: + peci0: peci-bus@0 { + compatible = "vendor,soc-peci"; + reg = <0x0 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + }; + +Generic device tree configuration for PECI clients +================================================== + +Required properties: +- compatible : Should contain name of 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>; + }; + };
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2.18.0