ARM: orion5x: use DT to describe I2C devices on edmini_v2

This commit converts the already partially DT-converted edmini_v2
platform to use the Device Tree for I2C bus and devices.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398202002-28530-30-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

2 files changed, 14 insertions, 24 deletions

diff --git a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
index aa74b00d68e2..41b2ab567bf5 100644
--- a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
+++ b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
@@ -10,6 +10,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 #include "orion5x-mv88f5182.dtsi"
 
 / {
@@ -63,6 +64,19 @@
         };
 };
 
+&i2c {
+        status = "okay";
+        clock-frequency = <100000>;
+        #address-cells = <1>;
+
+        rtc@32 {
+                compatible = "ricoh,rs5c372a";
+                reg = <0x32>;
+                interrupt-parent = <&gpio0>;
+                interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+        };
+};
+
 &mdio {
         status = "okay";
 
diff --git a/arch/arm/mach-orion5x/edmini_v2-setup.c b/arch/arm/mach-orion5x/edmini_v2-setup.c
index c50469e978de..75648abbee92 100644
--- a/arch/arm/mach-orion5x/edmini_v2-setup.c
+++ b/arch/arm/mach-orion5x/edmini_v2-setup.c
@@ -96,17 +96,6 @@ static struct platform_device edmini_v2_nor_flash = {
 };
 
 /*****************************************************************************
- * RTC 5C372a on I2C bus
- ****************************************************************************/
-
-#define EDMINIV2_RTC_GPIO       3
-
-static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
-        I2C_BOARD_INFO("rs5c372a", 0x32),
-        .irq = 0,
-};
-
-/*****************************************************************************
  * General Setup
  ****************************************************************************/
 
@@ -125,17 +114,4 @@ void __init edmini_v2_init(void)
 
         pr_notice("edmini_v2: USB device port, flash write and power-off "
                   "are not yet supported.\n");
-
-        /* Get RTC IRQ and register the chip */
-        if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
-                if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
-                        edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
-                else
-                        gpio_free(EDMINIV2_RTC_GPIO);
-        }
-
-        if (edmini_v2_i2c_rtc.irq == 0)
-                pr_warning("edmini_v2: failed to get RTC IRQ\n");
-
-        i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
 }