On 02/06/2017 02:26 PM, Kostya Porotchkin wrote:
Hi, Marek,
Hi,
(please stop top-posting)
I added a regulator to the board DTS and connected it to the USB port:
/{ model = "MACCHIATOBin-8040"; compatible = "marvell,armada8040-mcbin", "marvell,armada8040"; ... ... regulators { compatible = "simple-bus"; #address-cells = <1>; #size-cells = <0>;
reg_usb3h0_vbus: usb3-vbus0 { compatible = "regulator-fixed"; pinctrl-names = "default"; pinctrl-0 = <&cpm_xhci_vbus_pins>; regulator-name = "reg-usb3h0-vbus"; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; startup-delay-us = <500000>; enable-active-high; regulator-always-on; gpio = <&cpm_gpio1 15 GPIO_ACTIVE_HIGH>; /* GPIO[47] */ };}; };
&cps_usb3_0 { vcc-supply = <®_usb3h0_vbus>; status = "okay"; };
However the regulator is not activated when I issue "usb reset" command. I can either call to " uclass_first_device(UCLASS_REGULATOR, &dev)" during arch early init stage, or select the regulator with "regulator dev" command.
Only then the VBUS GPIO enables the USB power.
Is it the expected behavior or I am missing something in my configuration?
You should request and enable the regulator in your driver , ie using regulator_set_enable()