i.MX ProcessorsのトピックRe: uboot usb start USB0: Port not available.

uboot usb start USB0: Port not available.

fulinux — Thu, 18 Aug 2016 03:57:23 GMT

Hi,

i want to add usb support for uboot.

This is my uboot log:

U-Boot 2015.04-14472-gb5946f5-dirty (Aug 18 2016 - 09:49:11)

CPU: Freescale i.MX6Q rev1.5 at 792 MHz

CPU: Temperature 38 C

Reset cause: POR

Board: MX6-SabreSD

I2C: ready

DRAM: 3.8 GiB

PMIC: PFUZE100 ID=0x10

MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2, FSL_SDHC: 3

mmc get env dev=0

No panel detected: default to SAMSUNG-LTM230HL08

Display: SAMSUNG-LTM230HL08 (1920x1080)

In: serial

Out: serial

Err: serial

switch to partitions #0, OK

mmc0(part 0) is current device

Net: Phy 1 not found

PHY reset timed out

FEC [PRIME]

Normal Boot

Hit any key to stop autoboot: 0

i plug a usb disk to my custom board of imx6q, and run usb start command as follows:

=> usb start

starting USB...

USB0: Port not available.

=> usbboot

** No device specified **

=> usb reset

resetting USB...

USB0: Port not available.

Status indicator lamp of Usb disk is off, what should i do? usb disk can be read in linux kernel.

in uboot-imx/include/configs/mx6sabresd.h file:

80 /* USB Configs */

81 #define CONFIG_CMD_USB

82 #ifdef CONFIG_CMD_USB

83 #define CONFIG_USB_EHCI

84 #define CONFIG_USB_EHCI_MX6

85 #define CONFIG_USB_STORAGE

86 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET

87 #define CONFIG_USB_HOST_ETHER

88 #define CONFIG_USB_ETHER_ASIX

89 #define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)

90 #define CONFIG_MXC_USB_FLAGS 0

91 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 /* Enabled USB controller number */

92 #endif

in uboot-imx/board/freescale/mx6sabresd/mx6sabresd.c file:

898 #ifdef CONFIG_USB_EHCI_MX6

899 #define USB_OTHERREGS_OFFSET 0x800

900 #define UCTRL_PWR_POL (1 << 9)

901

902 static iomux_v3_cfg_t const usb_otg_pads[] = {

903 MX6_PAD_EIM_D22__USB_OTG_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),

904 MX6_PAD_ENET_RX_ER__USB_OTG_ID | MUX_PAD_CTRL(OTG_ID_PAD_CTRL),

905 };

906

907 static iomux_v3_cfg_t const usb_hc1_pads[] = {

908 MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),

909 };

910

911 static void setup_usb(void)

912 {

913 imx_iomux_v3_setup_multiple_pads(usb_otg_pads,

914 ARRAY_SIZE(usb_otg_pads));

915

916 /*

917 * set daisy chain for otg_pin_id on 6q.

918 * for 6dl, this bit is reserved

919 */

920 imx_iomux_set_gpr_register(1, 13, 1, 0);

921

922 imx_iomux_v3_setup_multiple_pads(usb_hc1_pads,

923 ARRAY_SIZE(usb_hc1_pads));

924 }

Re: uboot usb start USB0: Port not available.

igorpadykov — Thu, 18 Aug 2016 10:59:13 GMT

when connecting memory stick to usb otg connector please

verify that USB_ID signal is low, use special cable for that.

Best regards

igor

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Re: uboot usb start USB0: Port not available.

fulinux — Wed, 24 Aug 2016 10:13:37 GMT

Hi,

Thank you for your reply!

我使用了uboot-2013.04版本的，我定制的板子在usb host上挂接了一个主hub, 在主hub上再接了一个从hub, 现在当u盘接在主hub上是可以实现的，但是当u盘接在从hub上的时候会出现找不到u盘，甚至主hub上无法找到从hub, 如下所示：

u盘在主hub上的时候：

[IMX6Q-UBOOT] usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
     u-boot EHCI Host Controller

2 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-3 Hub (480 Mb/s, 100mA) //这个是主hub (root hub)
    |   USB2.0 Hub
    |
    +-4 Mass Storage (480 Mb/s, 98mA) //这个是u盘 (udisk)
    |    Generic USB Storage 000000000272
    |
    +-5 Human Interface (12 Mb/s, 300mA)
         Touch Follow Your Imagination! TPI2302_U2_H200V141218_8888 TPI2302_U2_H200V141218_8888

u盘在从hub上的时候：

[IMX6Q-UBOOT] usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
     u-boot EHCI Host Controller

2 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-3 Hub (480 Mb/s, 100mA)
    |   USB2.0 Hub
    |
    +-4 Human Interface (12 Mb/s, 300mA)
         Touch Follow Your Imagination! TPI2302_U2_H200V141218_8888 TPI2302_U2_H200V141218_8888

这个时候没有从hub和u盘设备；

下面是我在include/configs/mx6qsabresd.h文件中做的改动：

33 /* USB Configs */
34 #define CONFIG_USB_BOOT 1 /* Enabled boot system from usb disk */
35 #define CONFIG_CMD_USB
36 #define CONFIG_USB_EHCI
37 #define CONFIG_USB_EHCI_MX6
38 #define CONFIG_USB_STORAGE
39 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
40 #define CONFIG_USB_HOST_ETHER
41 #define CONFIG_USB_ETHER_ASIX
43 #define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)
44 #define CONFIG_MXC_USB_FLAGS 0
45 #define CONFIG_USB_MAX_CONTROLLER_COUNT 2 /* Enabled USB controller number */

请问一下如何才能找到从hub呢？

在头文件中CONFIG_MXC_USB_PORT，CONFIG_MXC_USB_PORTSC，CONFIG_MXC_USB_FLAGS，CONFIG_USB_MAX_CONTROLLER_COUNT这个几个宏是分别表达了什么意思呢？

还有一个奇怪的错误提示：

[IMX6Q-UBOOT] usb start
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 1 USB Device(s) found
USB1: USB EHCI 1.00
scanning bus 1 for devices... EHCI timed out on TD - token=0x80008d80

      USB device not accepting new address (error=22)
4 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) found
       scanning usb for ethernet devices... 0 Ethernet Device(s) found

这个有是什么原因呢？

期待你的回复，谢谢：）

Re: uboot usb start USB0: Port not available.

1282497337 — Wed, 26 Dec 2018 08:06:01 GMT

hi chen

I encounter the same problem ,when i use the cmd "usb start " in uboot stage ,i got the line :

>>usb start

starting USB...

USB0: Port not available.

just like you post problem so could you tell me how to solve this problem.

the uboot version is 2015-04,and my board is imx6d7c

thx.

Alee

Re: uboot usb start USB0: Port not available.

1074562799 — Mon, 27 May 2019 06:33:59 GMT

hi ,

I encounter the same problem.do you solve the problem?