[PATCH 5/5] sandbox: dts: add i2c and spi libftdi1 bit-bang example

[Antony Pavlov]

Usage:

  barebox$ make sandbox_defconfig
  barebox$ sed -i "s/# CONFIG_GPIO_LIBFTDI1.*$/CONFIG_GPIO_LIBFTDI1=y/" .config

  # edit arch/sandbox/dts/sandbox.dts if necessary

  barebox$ make
  barebox$ sudo ./barebox -d arch/sandbox/dts/sandbox.dtb

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/sandbox/dts/sandbox.dts | 47 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index 2595aa13fa..44c7f92237 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -1,7 +1,54 @@
 /dts-v1/;
 
 #include "skeleton.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
+	gpio0: gpio at 0 {
+		compatible = "barebox,libftdi1-gpio";
+		/* use ACBUS[7:0] */
+		gpio-controller;
+		#gpio-cells = <2>;
+		status = "okay";
+	};
 
+	spi0 {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		gpio-sck  = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+		gpio-mosi = <&gpio0 1 GPIO_ACTIVE_HIGH>;
+		gpio-miso = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+		cs-gpios  = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+
+		num-chipselects = <1>;
+
+		status = "disabled";
+
+		m25p128 at 0 {
+			compatible = "m25p128", "jedec,spi-nor";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0>;
+			spi-max-frequency = <1000000>;
+		};
+	};
+
+	i2c0: i2c0 {
+		compatible = "i2c-gpio";
+		gpios = <&gpio0 4 GPIO_ACTIVE_HIGH /* sda */
+			&gpio0 5 GPIO_ACTIVE_HIGH /* scl */
+			>;
+		i2c-gpio,sda-open-drain;
+		i2c-gpio,scl-open-drain;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		status = "disabled";
+
+		eeprom: eeprom at 50 {
+			compatible = "atmel,24c32";
+			reg = <0x50>;
+		};
+	};
 };
-- 
2.14.1