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[参考译文] AM625：在 UBoot 中启用 USB0

admin
Guru**** 1959305 points
请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1370740/am625-enable-usb0-in-uboot

器件型号：AM625

工具与软件：

如何在 uBoot 中启用 USB0？

无论是使用默认的.dts、还是将 usb0配置从内核复制到 uBoot DTS。 与下面的结果相同、我在 AM62-SK-P1上得到

客户目标是将 uBoot 中的 USB0用作主机来支持 USB-MSC。

e2e.ti.com/.../0042.k3_2D00_am625_2D00_sk.dts

e2e.ti.com/.../0042.k3_2D00_am62_2D00_main.dtsi

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U-Boot SPL 2023.04-dirty (Jun 05 2024 - 12:41:56 +0800)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)')
SPL initial stack usage: 13408 bytes
Trying to boot from MMC2
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...
NOTICE: BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b87-dirty
NOTICE: BL31: Built : 16:09:05, Feb 9 2024
U-Boot SPL 2023.04-ti-gf9b966c67473 (Mar 19 2024 - 20:31:40 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)')
SPL initial stack usage: 1856 bytes
Trying to boot from MMC2
Authentication passed
Authentication passed
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#2. uBoot DTS 未更新 USB 配置、但会在内核 DTS 中进行更新。

usbss0：dwc3-usb@f900000｛
  兼容="ti、am62-USB"；
   REG =<0x00 0x0f900000 0x00 0x800>
+  <0x00 0x0f908000 0x00 0x400>；

#3.  再次插入 U 闪存并打开电源、在 USB@31100000上找到2个 USB 器件、为什么在 USB1上有2个器件？

=> USB 开始
正在启动 USB...
总线 USB@31100000：寄存器1000840网络端口1
启动控制器
USB xHCI 1.10
正在扫描总线 USB@31100000设备... 找到2个 USB 设备
正在扫描存储设备的 USB ... 找到1个存储设备
=>

  • 0
    TI__Guru**** 1959305 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    尊敬的 Tony：

    qi yu1 说：
    usbss0：dwc3-usb@f900000 {
      兼容="ti、am62-USB"；
       REG =<0x00 0x0f900000 0x00 0x800>
    +  <0x00 0x0f908000 0x00 0x400>；

    否、请勿触摸 k3-am62-main.dtsi 文件。

    [quote userid="35100" url="~/support/processors-group/processors/f/processors-forum/1370740/am625-enable-usb0-in-uboot 为什么 USB1上有2个？

    "2"是指虚拟根集线器和 USB 设备。

    这是 USB0处于主机模式的 SDK9.2 U-Boot 器件树补丁。

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    diff --git a/arch/arm/dts/k3-am625-sk.dts b/arch/arm/dts/k3-am625-sk.dts
    index 823e4320c3c4..4f559dbc2f4d 100644
    --- a/arch/arm/dts/k3-am625-sk.dts
    +++ b/arch/arm/dts/k3-am625-sk.dts
    @@ -569,7 +569,7 @@
    };
    &usb0 {
    - dr_mode = "peripheral";
    + dr_mode = "host";
    };
    &usb1 {
    diff --git a/arch/arm/dts/k3-am62x-sk-common-u-boot.dtsi b/arch/arm/dts/k3-am62x-sk-common-u-boot.dtsi
    index 4265b434168b..9db329975f06 100644
    --- a/arch/arm/dts/k3-am62x-sk-common-u-boot.dtsi
    +++ b/arch/arm/dts/k3-am62x-sk-common-u-boot.dtsi
    @@ -122,7 +122,7 @@
    };
    &usb0 {
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    这是 USB MSC 引导中的 U-Boot 引导日志。

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    U-Boot SPL 2023.04-00001-g0f287d63fb2d-dirty (Jun 05 2024 - 11:13:00 -0500)
    SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)')
    SPL initial stack usage: 13408 bytes
    Trying to boot from USB
    Bus usb@31000000: Register 1000840 NbrPorts 1
    Starting the controller
    USB XHCI 1.10
    Bus usb@31100000: Register 1000840 NbrPorts 1
    Starting the controller
    USB XHCI 1.10
    scanning bus usb@31000000 for devices... 2 USB Device(s) found
    scanning bus usb@31100000 for devices... 1 USB Device(s) found
    scanning usb for storage devices... 1 Storage Device(s) found
    Authentication passed
    Authentication passed
    Authentication passed
    Authentication passed
    Authentication passed
    Starting ATF on ARM64 core...
    NOTICE: BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b87-dirty
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  • 0
    TI__Guru**** 1959305 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    容器、

    我们不使用 USB-MSC 引导、而是想在 uBoot 中使用 USB-MSC。

    对于补丁、具有相同的结果

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    U-Boot 2023.04-dirty (Jun 06 2024 - 11:33:01 +0800)
    SoC: AM62X SR1.0 HS-FS
    Model: Texas Instruments AM625 SK
    EEPROM not available at 80, trying to read at 81
    Board: AM62B-SKEVM-P1 rev A
    DRAM: 2 GiB
    Core: 72 devices, 32 uclasses, devicetree: separate
    MMC: mmc@fa10000: 0, mmc@fa00000: 1
    Loading Environment from nowhere... OK
    In: serial
    Out: serial
    Err: serial
    Net: eth0: ethernet@8000000port@1
    =>
    => usb start
    starting USB...
    Bus usb@31100000: generic_phy_get_bulk : no phys property
    Register 1000840 NbrPorts 1
    Starting the controller
    USB XHCI 1.10
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  • 0
    TI__Guru**** 1959305 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    Tony、

    此 U-Boot 补丁还会使 USB0处于主机模式以用于 SD 卡引导：

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    U-Boot SPL 2023.04-00001-g0f287d63fb2d-dirty (Jun 06 2024 - 10:49:43 -0500)
    SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)')
    SPL initial stack usage: 13408 bytes
    Trying to boot from MMC2
    Authentication passed
    Authentication passed
    Authentication passed
    Authentication passed
    Authentication passed
    Starting ATF on ARM64 core...
    NOTICE: BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b87-dirty
    NOTICE: BL31: Built : 16:09:05, Feb 9 2024
    U-Boot SPL 2023.04-00001-g0f287d63fb2d-dirty (Jun 06 2024 - 10:49:49 -0500)
    SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)')
    SPL initial stack usage: 1856 bytes
    Trying to boot from MMC2
    Authentication passed
    Authentication passed
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    以下命令显示 USB0器件树将其配置为主机模式：

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    => fdt addr $fdtcontroladdr
    Working FDT set to fd5e7840
    => fdt print usb0
    usb@31000000 {
    compatible = "snps,dwc3";
    reg = <0x00000000 0x31000000 0x00000000 0x00050000>;
    interrupts = <0x00000000 0x000000bc 0x00000004 0x00000000 0x000000bc 0x00000004>;
    interrupt-names = "host", "peripheral";
    maximum-speed = "high-speed";
    dr_mode = "host";
    bootph-pre-ram;
    phandle = <0x00000071>;
    };
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  • 0
    TI__Guru**** 1959305 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好，Bin，

    我的错误是、我修改了 k3-am62x-sk-common.dtsi 文件、而不是 k3-am62x-sk-common-u-boot.dtsi 文件、该文件现在可以运行。

    但我没找到 将 k3-am62x-sk-common-u-boot.dtsi 添加到 k3-am625-sk.dts 的位置

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