linux-kernel - [PATCH 06/10] i2c: i2c-mux-ptxpmb-cpld: Add device tree bindings

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Date:   Fri,  7 Oct 2016 18:17:27 +0300
From:   Pantelis Antoniou <pantelis.antoniou@...sulko.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Frank Rowand <frowand.list@...il.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Wim Van Sebroeck <wim@...ana.be>,
        Guenter Roeck <linux@...ck-us.net>,
        Peter Rosin <peda@...ntia.se>,
        Debjit Ghosh <dghosh@...iper.net>,
        Georgi Vlaev <gvlaev@...iper.net>,
        Guenter Roeck <groeck@...iper.net>,
        JawaharBalaji Thirumalaisamy <jawaharb@...iper.net>,
        Rajat Jain <rajatjain@...iper.net>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-mtd@...ts.infradead.org, linux-watchdog@...r.kernel.org
Subject: [PATCH 06/10] i2c: i2c-mux-ptxpmb-cpld: Add device tree bindings

From: Georgi Vlaev <gvlaev@...iper.net>

Add binding document for the i2c driver of PTXPMB CPLD.

Signed-off-by: Georgi Vlaev <gvlaev@...iper.net>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
---
 .../bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt       | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt

diff --git a/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt b/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt
new file mode 100644
index 0000000..3b201f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt
@@ -0,0 +1,50 @@
+* Juniper PTXPMB CPLD I2C Mux
+
+I2C mux on the PTXPMB CPLD on Juniper series of routers.
+
+Required properties:
+
+  - compatible: Must contain one of the following.
+    "jnx,i2c-mux-ptxpmb-cpld", "jnx,i2c-mux-ngpmb-bcpld"
+  - num-enable: Number of muxes to enable.
+
+  The following required properties are defined externally:
+
+  - Standard I2C mux properties. See i2c-mux.txt in this directory.
+  - I2C child bus nodes. See i2c-mux.txt in this directory.
+
+Optional Properties:
+
+  - num-channels: Number of channels. If not present the default is 8.
+  - base-bus-num: Base bus number. If not present it is 0.
+  - use-force: Use the force method of the controller.
+
+
+Example:
+
+cpld-i2c-mux {
+	compatible = "jnx,i2c-mux-ptxpmb-cpld";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	i2c-parent = <&i2c1>;
+
+	num-enable = <1>;
+
+	i2c@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		/* PMB devices are accessed through FPC */
+
+		temp-sensor@1a { /* FPC */
+			compatible = "maxim,max6697";
+			reg = <0x1a>;
+			smbus-timeout-disable;
+			resistance-cancellation;
+			alert-mask = <0xff>;
+			over-temperature-mask = <0xff>;
+		};
+	};
+};
-- 
1.9.1