IMX287: usb0_vbus: disabling

[BrilliantovKiri]

Hello!

I work linux-3.18 from Freescale/linux-fslc · GitHub on custom board with iMX287 CPU.

USB schema:

Pin	Pad
USB0_ID	J5
USB0_D_P	B10
USB0_D_M	A10
USB0_OVERCURRENT	K5
USB1_D_M	B8
USB1_D_P	A8
USB1_OVERCURRENT	K8

DTS-file:

ahb@80080000 {

        usb0: usb@80080000 {

            pinctrl-names = "default";

            pinctrl-0 = <&usb0_id_pins_a>;

            vbus-supply = <&reg_usb0_vbus>;

            status = "okay";

        };

        usb1: usb@80090000 {

            vbus-supply = <&reg_usb1_vbus>;

            status = "okay";

        };

    };

regulators {

    compatible = "simple-bus";

reg_usb0_vbus: usb0_vbus {

            compatible = "regulator-fixed";

            regulator-name = "usb0_vbus";

            regulator-min-microvolt = <5000000>;

            regulator-max-microvolt = <5000000>;

            gpio = <&gpio1 24 GPIO_ACTIVE_HIGH>;

            enable-active-high;

        };

        reg_usb1_vbus: usb1_vbus {

            compatible = "regulator-fixed";

            regulator-name = "usb1_vbus";

            regulator-min-microvolt = <5000000>;

            regulator-max-microvolt = <5000000>;

            gpio = <&gpio1 27 GPIO_ACTIVE_HIGH>;

            enable-active-high;

        };

};

dmesg output:

~ # dmesg | grep usb

[    0.708009] usb0_vbus: 5000 mV

[    0.713149] usb1_vbus: 5000 mV

[    1.653267] usb1_vbus: disabling

[    1.656738] usb0_vbus: disabling

Bacause USB is disabled problem in configuration and I not understand gpio configuration in usb_vbus.

Can you help me?

Thank you and excuse my bad english.

[BrilliantovKiri]

Problem solved, right way - enable CONFIG_USB_CHIPIDEA in linux.

[BrilliantovKiri]

Ok, I understang GPIO configuration:

USB0 power is LCS_RD pin, USB1 - LCD_CS.

pinctrl@80018000 {

                pinctrl-names = "default";

                pinctrl-0 = <&hog_pins_a>;

                hog_pins_a: hog@0 {

                    reg = <0>;

                    fsl,pinmux-ids = <

//                      0x31e3 /* Relay1  */

//                      0x1193 /* Relay2  */

                        0x40d3 /* FEC RESET  */

                        0x11B3 /* USB1 PWR */

                        0x1183 /* USB0 PWR */

                    >;

                    fsl,drive-strength = <0>;

                    fsl,voltage = <1>;

                    fsl,pull-up = <0>;

                };

#define MX28_PAD_LCD_RD_E__GPIO_1_24                0x1183

#define MX28_PAD_LCD_CS__GPIO_1_27                  0x11b3

But why USB is disabled?

[igorpadykov]

Hi Kirill

do you have 5V applied to i.MX28 VDD5V pad ?

Best regards

igor

[BrilliantovKiri]

I think yes, because with linux-2.6.35 all work.

I add regulator-always-on in description and this solve problem, now dmesg not contained usb1_vbus: disabling.

But after conect device to USB port I not see messages about this, system not register new USB device.