usb-phy supply vcc not found, using dummy regulator for AM335x with SDK8

shankar naragoni

Hi all,

I found below dmesg log messages for USB0 port and How I can fix usb-phy supply vcc not found and gpios property of node in driver level or device tree?

dmesg log:

[    5.075602] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[    5.075735] 47401300.usb-phy supply vcc not found, using dummy regulator
[    5.226464] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401b00[0]'
[    5.226595] 47401b00.usb-phy supply vcc not found, using dummy regulator
[    6.027437] random: nonblocking pool is initialized
[    7.975670] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[    7.975715] musb-hdrc: MHDRC RTL version 2.0
[    7.975739] musb-hdrc: setup fifo_mode 4
[    7.975780] musb-hdrc: 28/31 max ep, 16384/16384 memory
[    7.976044] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
[    8.014583] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1
[    8.073334] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    8.080500] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    8.088169] usb usb1: Product: MUSB HDRC host driver
[    8.093430] usb usb1: Manufacturer: Linux 3.14.26-2.0.1 musb-hcd
[    8.099746] usb usb1: SerialNumber: musb-hdrc.0.auto
[    8.325454] hub 1-0:1.0: USB hub found
[    8.352269] hub 1-0:1.0: 1 port detected

Thanks & Regards

N Shankar

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Please post the relevant .DTS section.

0 Biser Gatchev-XID over 10 years ago in reply to Biser Gatchev-XID

TI__Guru**** 393215 points

Also check if your USB is properly configured: processors.wiki.ti.com/.../UsbgeneralpageLinuxCore

0 shankar naragoni over 10 years ago in reply to Biser Gatchev-XID

Intellectual 885 points

Thank you for your reply,

Please find the below device tree for USB0(using for OTG).

&usb {
    status = "okay";

    control@44e10620 {
        status = "okay";
    };

    usb-phy@47401300 {
        status = "okay";
    };

    usb-phy@47401b00 {
        status = "okay";
    };

    usb@47401000 {
        status = "okay";
    };

    usb@47401800 {
        status = "okay";
        /*dr_mode = "host";*/ //COMMENTED for USB1 to UART3
    };

    dma-controller@47402000 {
        status = "okay";
    };

};

USB functionality wise working fine like usb detection and removal notification except above two log messages

Thanks & Regards

N Shankar

0 Yordan Kovachev over 10 years ago

TI__Guru**** 161600 points

Hi,

The log you provided, basically says that you have a 'gpios = <>' parameter within the usb@47400000/usb-phy@47401300 dts node, which cannot be parsed by your driver.

The other massage says that pm driver cannot parse the vcc supply for usb-phy. This should be an issue of the tps node.

From the usb nodes you've shared I cannot see anything that can point to the gpios parameter problem or the vcc issue. Can you please attach your full dts, as well as the am33xx.dtsi & all other .dtsi files that you include within the .dts file.

Best Regards,
Yordan

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usb-phy supply vcc not found, using dummy regulator for AM335x with SDK8