From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Alexandre Courbot <gnurou@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Frank Rowand <frowand.list@gmail.com>,
	Wolfram Sang <wsa@the-dreams.de>,
	Richard Purdie <rpurdie@rpsys.net>,
	Jacek Anaszewski <j.anaszewski@samsung.com>,
	Jean Delvare <jdelvare@suse.com>,
	Peter Rosin <peda@axentia.se>,
	Avirup Banerjee <abanerjee@juniper.net>,
	Georgi Vlaev <gvlaev@juniper.net>,
	Guenter Roeck <linux@roeck-us.net>,
	JawaharBalaji Thirumalaisamy <jawaharb@juniper.net>,
	Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
	devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-gpio@vger.kernel.org,
	linux-i2c@vger.kernel.org,
	linux-leds@vger.kernel.org,
	linux-hwmon@vger.kernel.org
Subject: [PATCH 02/10] mfd: dt-bindings: Add bindings for the Juniper I2CS MFD
Date: Fri,  7 Oct 2016 18:21:01 +0300
Message-Id: <1475853669-22480-3-git-send-email-pantelis.antoniou@konsulko.com>
In-Reply-To: <1475853669-22480-1-git-send-email-pantelis.antoniou@konsulko.com>
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List-ID: <linux-hwmon@vger.kernel.org>

From: Georgi Vlaev <gvlaev@juniper.net>

Add device tree bindings for the Juniper I2CS MFD driver.

Signed-off-by: Georgi Vlaev <gvlaev@juniper.net>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
---
 Documentation/devicetree/bindings/mfd/jnx-i2cs.txt | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/jnx-i2cs.txt

diff --git a/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt
new file mode 100644
index 0000000..0ec103b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt
@@ -0,0 +1,68 @@
+Device-Tree bindings for Juniper Networks I2CS FPGA MFD
+
+Required properties:
+- compatible - Must be one of:
+	"jnx,i2cs-rcb"	(Routing Engine or Control Board FRUs)
+	"jnx,i2cs-fpc"	(Flexible Port Concentrator FRUs)
+	"jnx,i2cs-sib"	(Switching Interface Board FRUs)
+	"jnx,i2cs-fan"	(Fan Tray FRUs)
+
+Optional properties:
+
+Depending on the FRU, the I2CS MFD has varied group of sub-devices:
+
+Device                   Description
+------                   -----------
+jnx,i2cs-gpio		: Virtual gpio mapping driver
+jnx,i2cs-fan-hwmon	: hwmon driver for fan trays
+jnx,i2c-mux-i2cs	: I2C Mux driver for FPC FRUs
+jnx,leds-i2cs		: Led driver
+
+All these optional nodes are described in their respective binding
+documents.
+
+Example node:
+
+i2cs@54 {
+	compatible = "jnx,i2cs-fpc";
+	reg = <0x54>;
+	#address-cells = <0>;
+	#size-cells = <0>;
+
+	fpc2_mux {
+		compatible = "jnx,i2c-mux-i2cs";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		fpc2i2c0: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+	};
+
+	fpc2_gpiomap: gpio-jnx-i2cs {
+		compatible = "jnx,gpio-i2cs";
+		reg = <0x54>;
+		#gpio-cells = <2>;
+		gpio-controller;
+		interrupt-controller;
+
+		/*
+		 * Map bits [0-3] of reg 0x21 as gpio inputs, bits [4-7]
+		 * as gpio outputs
+		 */
+		i2c-gpio-map = <0x21 0x0f>;
+	};
+
+	leds-jnx-i2cs {
+		compatible = "jnx,leds-i2cs";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sib8-active {
+			reg = <0>;
+			linux,default-trigger = "sib8-active";
+		};
+	};
+};
-- 
1.9.1