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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-05-28 12:03:10 +0300 |
|---|---|---|
| committer | Gregory CLEMENT <gregory.clement@bootlin.com> | 2019-06-11 14:33:55 +0300 |
| commit | 85e27ed7b6bdd541e08fdd29479b5aeccf777c4f (patch) | |
| tree | 1deeb4ebf5dc64ab00e1046a652bd3dd1127d42b /arch/arm64/boot/dts/marvell | |
| parent | 00954566464a46dbfd747aaeace281dc9eb00361 (diff) | |
| download | linux-85e27ed7b6bdd541e08fdd29479b5aeccf777c4f.tar.xz | |
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 <alexl@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Diffstat (limited to 'arch/arm64/boot/dts/marvell')
| -rw-r--r-- | arch/arm64/boot/dts/marvell/armada-7040-db.dts | 28 |
1 files changed, 28 insertions, 0 deletions
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 { |