Commit 85e27ed7 authored by Miquel Raynal's avatar Miquel Raynal Committed by Gregory CLEMENT
Browse files

arm64: dts: marvell: armada-7040-db: Add USB current regulators 



Armada 7040-db USB ports deliver 500mA by default while they
could deliver up to 900mA (usually, for USB3 devices).

The board embeds a GPIO controlled regulator on each port which can be
configured to deliver each amount of current.

Add a vin-supply property to the USB3 Vbus nodes for this purpose. The
regulator will be automatically 'enabled', ie. set to limit at 900mA
instead of 500mA.

Suggested-by: default avatarAlex Leibovich <alexl@marvell.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: default avatarGregory CLEMENT <gregory.clement@bootlin.com>
parent 00954566

arch/arm64/boot/dts/marvell/armada-7040-db.dts

+28 −0
Original line number Diff line number Diff line
@@ -28,6 +28,32 @@ 
		ethernet2 = &cp0_eth2;

	};



	cp0_exp_usb3_0_current_regulator: gpio-regulator {

		compatible = "regulator-gpio";

		regulator-name = "cp0-usb3-0-current-regulator";

		regulator-type = "current";

		regulator-min-microamp = <500000>;

		regulator-max-microamp = <900000>;

		gpios = <&expander0 4 GPIO_ACTIVE_HIGH>;

		states = <500000 0x0

			  900000 0x1>;

		enable-active-high;

		gpios-states = <0>;

	};



	cp0_exp_usb3_1_current_regulator: gpio-regulator {

		compatible = "regulator-gpio";

		regulator-name = "cp0-usb3-1-current-regulator";

		regulator-type = "current";

		regulator-min-microamp = <500000>;

		regulator-max-microamp = <900000>;

		gpios = <&expander0 5 GPIO_ACTIVE_HIGH>;

		states = <500000 0x0

			  900000 0x1>;

		enable-active-high;

		gpios-states = <0>;

	};



	cp0_reg_usb3_0_vbus: cp0-usb3-0-vbus {

		compatible = "regulator-fixed";

		regulator-name = "usb3h0-vbus";
@@ -35,6 +61,7 @@ 
		regulator-max-microvolt = <5000000>;

		enable-active-high;

		gpio = <&expander0 0 GPIO_ACTIVE_HIGH>;

		vin-supply = <&cp0_exp_usb3_0_current_regulator>;

	};



	cp0_reg_usb3_1_vbus: cp0-usb3-1-vbus {
@@ -44,6 +71,7 @@ 
		regulator-max-microvolt = <5000000>;

		enable-active-high;

		gpio = <&expander0 1 GPIO_ACTIVE_HIGH>;

		vin-supply = <&cp0_exp_usb3_1_current_regulator>;

	};



	cp0_usb3_0_phy: cp0-usb3-0-phy {

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