linux-kernel - [PATCH v10 01/12] dt-bindings: Add a document of PECI subsystem

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Message-Id: <20190107214136.5256-2-jae.hyun.yoo@linux.intel.com>
Date:   Mon,  7 Jan 2019 13:41:25 -0800
From:   Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
To:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Mark Rutland <mark.rutland@....com>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Jonathan Corbet <corbet@....net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Eric Sandeen <sandeen@...hat.com>,
        Arnd Bergmann <arnd@...db.de>, Wu Hao <hao.wu@...el.com>,
        Tomohiro Kusumi <kusumi.tomohiro@...il.com>,
        "Bryant G . Ly" <bryantly@...ux.vnet.ibm.com>,
        Frederic Barrat <fbarrat@...ux.vnet.ibm.com>,
        "David S . Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Vinod Koul <vkoul@...nel.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        David Kershner <david.kershner@...sys.com>,
        Uwe Kleine-Konig <u.kleine-koenig@...gutronix.de>,
        Sagar Dharia <sdharia@...eaurora.org>,
        Johan Hovold <johan@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Juergen Gross <jgross@...e.com>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>
Cc:     linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        openbmc@...ts.ozlabs.org,
        Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>,
        Haiyue Wang <haiyue.wang@...ux.intel.com>,
        James Feist <james.feist@...ux.intel.com>,
        Vernon Mauery <vernon.mauery@...ux.intel.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v10 01/12] dt-bindings: Add a document of PECI subsystem

This commit adds a document of generic PECI bus, adapter and client
driver.

Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Andrew Jeffery <andrew@...id.au>
Cc: Joel Stanley <joel@....id.au>
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
Reviewed-by: Haiyue Wang <haiyue.wang@...ux.intel.com>
Reviewed-by: James Feist <james.feist@...ux.intel.com>
Reviewed-by: Vernon Mauery <vernon.mauery@...ux.intel.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../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..71f26c7c6e58
--- /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. According to the PECI
+	       specification, client addresses start from 0x30.
+
+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>;
+		};
+	};
-- 
2.20.1