ARM: dts: am437x-gp-evm: Add vtt_fixed regulator

The VTT regulator for DDR3 termination on the am437x-gp-evm is
controlled by a gpio. It is configured by the bootloader so here we
define an always-on, fixed voltage regulator to hold the gpio.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index c0cc525..2e0c636 100644 (file)
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -27,6 +27,17 @@
                enable-active-high;
        };
 
+       vtt_fixed: fixedregulator-vtt {
+               compatible = "regulator-fixed";
+               regulator-name = "vtt_fixed";
+               regulator-min-microvolt = <1500000>;
+               regulator-max-microvolt = <1500000>;
+               regulator-always-on;
+               regulator-boot-on;
+               enable-active-high;
+               gpio = <&gpio5 7 GPIO_ACTIVE_HIGH>;
+       };
+
        backlight {
                compatible = "pwm-backlight";
                pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;