ARM: mvebu: add gpio fan support to Armada 370 RD

The Armada 370 RD platform has a GPIO-controlled fan on MPP8, so this
commit adds the relevant hardware description to Armada 370 RD Device
Tree.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lkml.kernel.org/r/1410429419-29820-2-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/armada-370-rd.dts b/arch/arm/boot/dts/armada-370-rd.dts
index ca13d9c8c5f8..ea61d8c05240 100644
--- a/arch/arm/boot/dts/armada-370-rd.dts
+++ b/arch/arm/boot/dts/armada-370-rd.dts
@@ -50,6 +50,13 @@
                 };
 
                 internal-regs {
+                        pinctrl {
+                                fan_pins: fan-pins {
+                                        marvell,pins = "mpp8";
+                                        marvell,function = "gpio";
+                                };
+                        };
+
                         serial@12000 {
                                 status = "okay";
                         };
@@ -110,6 +117,14 @@
                                 };
                         };
 
+                        gpio-fan {
+                                compatible = "gpio-fan";
+                                gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
+                                gpio-fan,speed-map = <0 0 3000 1>;
+                                pinctrl-0 = <&fan_pins>;
+                                pinctrl-names = "default";
+                        };
+
                         nand@d0000 {
                                 status = "okay";
                                 num-cs = <1>;