From 85e27ed7b6bdd541e08fdd29479b5aeccf777c4f Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Tue, 28 May 2019 11:03:10 +0200 Subject: 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: Alex Leibovich Signed-off-by: Miquel Raynal Signed-off-by: Gregory CLEMENT --- arch/arm64/boot/dts/marvell/armada-7040-db.dts | 28 ++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'arch/arm64/boot/dts/marvell/armada-7040-db.dts') diff --git a/arch/arm64/boot/dts/marvell/armada-7040-db.dts b/arch/arm64/boot/dts/marvell/armada-7040-db.dts index d20d84ce7ca8..f34ee87a0f56 100644 --- a/arch/arm64/boot/dts/marvell/armada-7040-db.dts +++ b/arch/arm64/boot/dts/marvell/armada-7040-db.dts @@ -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 { -- cgit v1.2.3-59-g8ed1b