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

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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: Alex Leibovich <alexl@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This commit is contained in:
Miquel Raynal 2019-05-28 11:03:10 +02:00 committed by Gregory CLEMENT
parent 0095456646
commit 85e27ed7b6
1 changed files with 28 additions and 0 deletions
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28
arch/arm64/boot/dts/marvell/armada-7040-db.dts
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@ -28,6 +28,32 @@ aliases {
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 @@ cp0_reg_usb3_0_vbus: cp0-usb3-0-vbus {
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 @@ cp0_reg_usb3_1_vbus: cp0-usb3-1-vbus {
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 {