linux-kernel - [PATCH 3/6] CRIS v32: dev88: add GPIO, LEDs, RTC, temp sensor

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Date:	Mon,  3 Aug 2015 20:19:21 +0200
From:	Rabin Vincent <rabin@....in>
To:	jesper.nilsson@...s.com
Cc:	linux-kernel@...r.kernel.org, linux-cris-kernel@...s.com,
	Rabin Vincent <rabin@....in>
Subject: [PATCH 3/6] CRIS v32: dev88: add GPIO, LEDs, RTC, temp sensor

Add the GPIO driver to the device tree and, using it, support for the
LEDs and the RTC chip (via I2C-GPIO), as well as the temperature sensor
(via SPI-GPIO).

Signed-off-by: Rabin Vincent <rabin@....in>
---
 arch/cris/boot/dts/dev88.dts    | 49 +++++++++++++++++++++++++++++++++++++++++
 arch/cris/boot/dts/etraxfs.dtsi |  8 +++++++
 2 files changed, 57 insertions(+)

diff --git a/arch/cris/boot/dts/dev88.dts b/arch/cris/boot/dts/dev88.dts
index 4fa5a3f..b9a230d 100644
--- a/arch/cris/boot/dts/dev88.dts
+++ b/arch/cris/boot/dts/dev88.dts
@@ -1,5 +1,7 @@
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
+
 /include/ "etraxfs.dtsi"
 
 / {
@@ -15,4 +17,51 @@
 			status = "okay";
 		};
 	};
+
+	spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpio-sck = <&gio 1 0 0xd>;
+		gpio-miso = <&gio 4 0 0xd>;
+		gpio-mosi = <&gio 0 0 0xd>;
+		cs-gpios = <&gio 3 0 0xd>;
+		num-chipselects = <1>;
+
+		temp-sensor@0 {
+			compatible = "ti,lm70";
+			reg = <0>;
+
+			spi-max-frequency = <100000>;
+		};
+	};
+
+	i2c {
+		compatible = "i2c-gpio";
+		gpios = <&gio 5 0 0xd>, <&gio 6 0 0xd>;
+		i2c-gpio,delay-us = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rtc@51 {
+			compatible = "nxp,pcf8563";
+			reg = <0x51>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		network {
+			label = "network";
+			gpios = <&gio 2 GPIO_ACTIVE_LOW 0xa>;
+		};
+
+		status {
+			label = "status";
+			gpios = <&gio 3 GPIO_ACTIVE_LOW 0xa>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };
diff --git a/arch/cris/boot/dts/etraxfs.dtsi b/arch/cris/boot/dts/etraxfs.dtsi
index 909bced..bf1b858 100644
--- a/arch/cris/boot/dts/etraxfs.dtsi
+++ b/arch/cris/boot/dts/etraxfs.dtsi
@@ -28,6 +28,14 @@
 			#interrupt-cells = <1>;
 		};
 
+		gio: gpio@...1a000 {
+			compatible = "axis,etraxfs-gio";
+			reg = <0xb001a000 0x1000>;
+			interrupts = <50>;
+			gpio-controller;
+			#gpio-cells = <3>;
+		};
+
 		serial@...260000 {
 			compatible = "axis,etraxfs-uart";
 			reg = <0xb0026000 0x1000>;
-- 
2.1.4

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