sdk08.00 am335x usb 一主一从设计

Jinfang Deng

各位好，现在想要usb0设置为从模式，与PC通信；usb1设置为主模式，通过hub连接各种usb设备。usb1功能已实现，usb0通过usb线连接电脑无反应。

硬件上，两个usb的vbus脚都是直接接5V，usb0的ID脚悬空，usb1的ID脚下拉到地。除DM、DP外的其它脚悬空。

dts配置如下：

&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";
	};

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

启动后usb信息如下：

 dmesg | grep usb
[    0.250293] usbcore: registered new interface driver usbfs
[    0.250482] usbcore: registered new interface driver hub
[    0.250677] usbcore: registered new device driver usb
[    1.275226] usbcore: registered new interface driver asix
[    1.281138] usbcore: registered new interface driver ax88179_178a
[    1.287742] usbcore: registered new interface driver cdc_ether
[    1.294095] usbcore: registered new interface driver smsc95xx
[    1.300298] usbcore: registered new interface driver net1080
[    1.306424] usbcore: registered new interface driver cdc_subset
[    1.312794] usbcore: registered new interface driver zaurus
[    1.318900] usbcore: registered new interface driver cdc_ncm
[    1.325029] usbcore: registered new interface driver cdc_mbim
[    1.355088] usbcore: registered new interface driver cdc_wdm
[    1.361281] usbcore: registered new interface driver usb-storage
[    1.368011] usbcore: registered new interface driver usbserial
[    1.374324] usbcore: registered new interface driver option
[    1.380329] usbserial: USB Serial support registered for GSM modem (1-port)
[    1.389949] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[    1.390014] 47401300.usb-phy supply vcc not found, using dummy regulator
[    1.399816] musb-hdrc musb-hdrc.0.auto: Failed to request rx1.
[    1.406019] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517
[    1.414335] platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral
[    1.422741] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401b00[0]'
[    1.422794] 47401b00.usb-phy supply vcc not found, using dummy regulator
[    1.432417] musb-hdrc musb-hdrc.1.auto: Failed to request rx1.
[    1.438708] musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with status -517
[    1.446892] platform musb-hdrc.1.auto: Driver musb-hdrc requests probe deferral
[    1.512511] usbcore: registered new interface driver uvcvideo
[    1.586269] usbcore: registered new interface driver usbhid
[    1.592184] usbhid: USB HID core driver
[    2.870145] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[    2.870162] musb-hdrc: MHDRC RTL version 2.0 
[    2.870172] musb-hdrc: setup fifo_mode 4
[    2.870187] musb-hdrc: 28/31 max ep, 16384/16384 memory
[    2.870292] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
[    2.876833] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1
[    2.885360] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    2.892526] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.900127] usb usb1: Product: MUSB HDRC host driver
[    2.905351] usb usb1: Manufacturer: Linux 3.14.26 musb-hcd
[    2.911141] usb usb1: SerialNumber: musb-hdrc.0.auto
[    2.930167] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[    2.930186] musb-hdrc: MHDRC RTL version 2.0 
[    2.930194] musb-hdrc: setup fifo_mode 4
[    2.930209] musb-hdrc: 28/31 max ep, 16384/16384 memory
[    2.930333] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    2.936934] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2
[    2.945428] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[    2.952588] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.960197] usb usb2: Product: MUSB HDRC host driver
[    2.965417] usb usb2: Manufacturer: Linux 3.14.26 musb-hcd
[    2.971195] usb usb2: SerialNumber: musb-hdrc.1.auto
[    3.387144] usb 2-1: new high-speed USB device number 2 using musb-hdrc
[    3.549623] usb 2-1: New USB device found, idVendor=0424, idProduct=2514
[    3.556675] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.888301] usb 2-1.2: new high-speed USB device number 3 using musb-hdrc
[    4.117340] usb 2-1.2: New USB device found, idVendor=058f, idProduct=5608
[    4.124577] usb 2-1.2: New USB device strings: Mfr=3, Product=1, SerialNumber=0
[    4.132276] usb 2-1.2: Product: USB 2.0 Web Camera
[    4.137322] usb 2-1.2: Manufacturer: Alcor Micro, Corp.
[    4.217896] input: USB 2.0 Web Camera as /devices/ocp.3/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb2/2-1/2-1.2/2-1.2:1.0/input/input1
root@am335x-evm:~# dmesg | grep hub
[    0.250482] usbcore: registered new interface driver hub
[    2.917427] hub 1-0:1.0: USB hub found
[    2.921458] hub 1-0:1.0: 1 port detected
[    2.977400] hub 2-0:1.0: USB hub found
[    2.981425] hub 2-0:1.0: 1 port detected
[    3.588407] hub 2-1:1.0: USB hub found
[    3.592472] hub 2-1:1.0: 4 ports detected

想问下：

1.硬件上是否可以这样设计？

2.如果可以，是否还有哪里需要设置或什么的？之前调试usb1的时候，由于下接hub不支持热插拔，打过一个patch，此外就没有修改过内核usb相关文件了。

期待各位的回复，先行谢过。

10 年多前

0 Jinfang Deng 10 年多前

Intellectual 453 points

现在想着打一下Sitara Linux SDK MUSB Issues里边的patch尝试一下，但是我这边一直打不开这些patch包的链接，各位谁能帮忙给贴出来？？谢谢了。

0 Jinfang Deng 10 年多前

Intellectual 453 points

刚仔细过了一遍，发现dts中有问题，已经改过来了，如下：

&usb {
    status = "okay";

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

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

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

    usb@47401000 {
        status = "okay";

        dr_mode = "peripheral";

    };

    usb@47401800 {
        status = "okay";
        dr_mode = "host";
    };

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

但是还是不行，不知道哪里还有问题？

0 Jinfang Deng 10 年多前

Intellectual 453 points

刚才仔细过了一遍，发现dts中有点问题，已经改过来了，如下：

&usb {
	status = "okay";

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

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

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

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

	usb@47401800 {
		status = "okay";
		dr_mode = "host";
	};

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

但是还是不行，想要把usb0配成从模式的hid，与pc通信，不知道还有哪里有问题。

0 Yaoming Qin 10 年多前

TI__Mastermind 35157 points

硬件上不建议这么做的，您的这部分原理图能贴上来吗？

0 Jinfang Deng 10 年多前回复 Yaoming Qin

Intellectual 453 points

感谢您的回复，原理图如下：( usb0中除了DM和DP，都是悬空的。)

另外测试了下，将usb0 的id脚接地后，配置成host引脚，是正常工作的。期待您的回复！

0 Jinfang Deng 10 年多前回复 Jinfang Deng

Intellectual 453 points

不好意思，上边写错了，是配置成host模式，usb0可以正常工作。

在musb_dspc.c的dsps_interrupt函数中，添加了一条打印信息，在host模式的时候，会打印进入中断的信息；在配置成peripheral模式的时候，插入电脑usb口后，无进入此中断的信息。

config配置信息大致如下：

0 Jinfang Deng 10 年多前

Intellectual 453 points

经修改hid.c文件，并且配置成模块的方式，linux启动后手动加载模块，已经可以被PC识别为HID，再次感谢回复。

0 Jinfang Deng 10 年多前回复 Yaoming Qin

Intellectual 453 points

经修改hid.c文件，并且配置为模块，在linux启动后手动加载模块，已能被PC端检测为HID设备，再次感谢回复。

0 xin Ryan 10 年多前回复 Jinfang Deng

Prodigy 40 points

Hi, jinfeng
你好，我遇到的现象和你类似，SDK8.0，Board参考TI AM335X SK board
Device Tree 配置:
usb@47401000 {
   status = "okay";
   dr_mode = "otg";
   };

usb@47401800 {
   status = "okay";
   dr_mode = "host";
   };
USB0我想配置为OTG Mode, 因为需要HOST mode & Device mode的切换，So，SW setting USB0 mode is "OTG"
进入系列之后，发现USB0中断的确没有进去，Insert U Disk没有任何反应
修改DTS，USB0 Mode 配置为 HOST, 一切OK
就是想请教一下，看到你Modify hid.c 文件，不知道Modify Code是否可以share一下，谢谢！
My mial:renyanjinlong@163.com

0 Jinfang Deng 10 年多前回复 xin Ryan

Intellectual 453 points

已发，请注意查收。

0 user4205571 10 年多前

Prodigy 160 points

你好。我现在也在做usb0是gadget模式 usb1是host模式

DM385板卡设置一个usb控制器为host 模式。另一个usb控制器为gadget模式

我按照手册做如下修改

1) Select host and gadget support

  Menuconfig->Device Drviers->USB Support
          <*>   Support for Host-side USB
          [ ]     USB verbose debug messages
          [*]     USB announce new devices
          *** Miscellaneous USB options ***
          ......
          <*>   USB Gadget Support  --->
2) Select USB OTG support (for TI814X/TI813X/TI811X)

    Menuconfig->Device Drviers->USB Support
          <*>   Inventra Highspeed Dual Role Controller (TI, ADI, ...)
                       *** Platform Glue Layer ***
          < >     TUSB6010
          < >     OMAP2430 and onwards
          < >     AM35x
          <*>     TI81XX
                  TI816X usb connector's ID pin control (from usb connector)  --->
                  Driver Mode (Both host and peripheral:  USB OTG (On The Go) Device)  --->
          [ ]   Disable DMA (always use PIO)
          [*]   Enable debugging messages

3) Select USB OTG support (for TI816X)

   Menuconfig->Device Drviers->USB Support
          <*>   Inventra Highspeed Dual Role Controller (TI, ADI, ...)
                       *** Platform Glue Layer ***
          < >     TUSB6010
          < >     OMAP2430 and onwards
          < >     AM35x
          <*>     TI81XX
                  TI816X usb connector's ID pin control (from software setting)  --->
                            Force TI816X USB0 to  (Host mode)  --->
                            Force TI816X USB1 to  (Host mode)  --->
                  Driver Mode (Both host and peripheral:  USB OTG (On The Go) Device)  --->
          [ ]   Disable DMA (always use PIO)
          [*]   Enable debugging messages

4) Select Gadget device controller and gadget driver as modules

Menuconfig->Device Drviers->USB Support
          <*>   USB Gadget Support  --->
                --- USB Gadget Support
                [ ]   Debugging messages (DEVELOPMENT) (NEW)
                [ ]   Debugging information files (DEVELOPMENT) (NEW)
                [ ]   Debugging information files in debugfs (DEVELOPMENT) (NEW)
                (2)   Maximum VBUS Power usage (2-500 mA) (NEW)
                USB Peripheral Controller (Inventra HDRC USB Peripheral (TI, ADI, ...))  --->
               <M>   USB Gadget Drivers
               <M>     Gadget Zero (DEVELOPMENT)
               [ ]       HNP Test Device (NEW)
               < >     Audio Gadget (EXPERIMENTAL) (NEW)
               <M>     Ethernet Gadget (with CDC Ethernet support)
               [*]       RNDIS support (NEW)
               [ ]       Ethernet Emulation Model (EEM) support (NEW)
               < >     Gadget Filesystem (EXPERIMENTAL) (NEW)
               < >     Function Filesystem (EXPERIMENTAL) (NEW)
               <M>     File-backed Storage Gadget
               [*]       File-backed Storage Gadget testing version
5) Unselect the OTG Targeted Peripherals list
     Menuconfig->Device Drviers->USB Support
          <*>   Support for Host-side USB
                ....
               [*] USB runtime power management (autosuspend) and wakeup
               -*- OTG support
               [ ]   Rely on OTG Targeted Peripherals List
               [ ]   Disable external hubs
6) Build uImage and usb gadget modules

7) Insert the gadget modules

1. insmod g_ether.ko (usb0 port will be enabled as cdc/rndis gadget)
2. insmod g_zero.ko (usb1 port will enabled as host mode and all devices (eg.USB-HDD/flash drive etc) connected
to this port will be enumerated
3. rmmod g_ether.ko (remove the gadget driver from usb0 port)
4. insmod g_file_storage.ko file=/dev/sda stall=0 buflen=65536 (or use g_mass_storage.ko)
Now the usb0 port can be connected to window/linux host as mass storage gadget with USB-HDD (/dev/sda) as
storage media.

结果：

进行如上操作后。将U盘插入USB1. 将标准的usb电缆连接到pc端都没有任何的反应。没有识别

请问你是如何修改让一个做主一个做从

0 user5905241 7 年多前回复 Jinfang Deng

Prodigy 10 points

您好，我也遇到了相似的问题，可以把您修改的地方发我一份吗？我的邮箱：carl.wp@foxmail.com 谢谢

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sdk08.00 am335x usb 一主一从设计

现在想着打一下Sitara Linux SDK MUSB Issues里边的patch尝试一下，但是我这边一直打不开这些patch包的链接，各位谁能帮忙给贴出来？？谢谢了。