ARM: Kirkwood: Convert Dockstar to use regulators

Control the power to USB using a fixed regulator.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

2 files changed, 17 insertions, 5 deletions

diff --git a/arch/arm/boot/dts/kirkwood-dockstar.dts b/arch/arm/boot/dts/kirkwood-dockstar.dts
index 08a582414b88..c0fbfdc342f8 100644
--- a/arch/arm/boot/dts/kirkwood-dockstar.dts
+++ b/arch/arm/boot/dts/kirkwood-dockstar.dts
@@ -54,4 +54,21 @@
                         gpios = <&gpio1 15 1>;
                 };
         };
+        regulators {
+                compatible = "simple-bus";
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                usb_power: regulator@1 {
+                        compatible = "regulator-fixed";
+                        reg = <1>;
+                        regulator-name = "USB Power";
+                        regulator-min-microvolt = <5000000>;
+                        regulator-max-microvolt = <5000000>;
+                        enable-active-high;
+                        regulator-always-on;
+                        regulator-boot-on;
+                        gpio = <&gpio0 29 0>;
+                };
+        };
 };
diff --git a/arch/arm/mach-kirkwood/board-dockstar.c b/arch/arm/mach-kirkwood/board-dockstar.c
index e94782d6a266..410452acf323 100644
--- a/arch/arm/mach-kirkwood/board-dockstar.c
+++ b/arch/arm/mach-kirkwood/board-dockstar.c
@@ -24,7 +24,6 @@
 #include <linux/of_fdt.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
-#include <linux/gpio.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -52,9 +51,5 @@ void __init dockstar_dt_init(void)
          */
         kirkwood_mpp_conf(dockstar_mpp_config);
 
-        if (gpio_request(29, "USB Power Enable") != 0 ||
-            gpio_direction_output(29, 1) != 0)
-                pr_err("can't setup GPIO 29 (USB Power Enable)\n");
-
         kirkwood_ge00_init(&dockstar_ge00_data);
 }