There are several peripherals who generate some extra noise when
they don't have a regulator assigned to them. This patch
creates a dummy regulator to reduce the noise.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/arch/arm/boot/dts/am3517-evm.dts b/arch/arm/boot/dts/am3517-evm.dts
index d7eb6ad76c29..0d56c3f56a6d 100644
--- a/arch/arm/boot/dts/am3517-evm.dts
+++ b/arch/arm/boot/dts/am3517-evm.dts
@@ -31,6 +31,13 @@
regulator-max-microvolt = <3300000>;
};
+ dummy_reg: dummy_reg {
+ compatible = "regulator-fixed";
+ regulator-name = "dummy_reg";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
gpio-keys {
compatible = "gpio-keys-polled";
poll-interval = <100>;
@@ -127,7 +134,7 @@
status = "okay";
pinctrl-names = "default";
enable-gpios = <&gpio6 16 GPIO_ACTIVE_HIGH>; /* gpio176, lcd INI */
-
+ vcc-supply = <&dummy_reg>;
port {
lcd_in: endpoint {
remote-endpoint = <&dpi_out>;
@@ -154,6 +161,7 @@
bl: backlight {
compatible = "pwm-backlight";
pinctrl-names = "default";
+ power-supply = <&dummy_reg>;
pinctrl-0 = <&backlight_pins>;
pwms = <&pwm11 0 5000000 0>;
brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
@@ -203,6 +211,7 @@
reg = <0x21>;
gpio-controller;
#gpio-cells = <2>;
+ vcc-supply = <&dummy_reg>;
};
};
--
2.17.1
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