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 <ra...@rab.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@b001a000 {
+ compatible = "axis,etraxfs-gio";
+ reg = <0xb001a000 0x1000>;
+ interrupts = <50>;
+ gpio-controller;
+ #gpio-cells = <3>;
+ };
+
serial@b00260000 {
compatible = "axis,etraxfs-uart";
reg = <0xb0026000 0x1000>;
--
2.1.4
--
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