Xilinx zynqmp USB开发

2024-06-29 17:22| 来源: 网络整理| 查看: 265

作者

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参考

Linux USB DWC3 Host/Peripheral Driver Zynq Ultrascale MPSOC Linux USB device driver U-Boot USB Driver Zynq UltraScale＋ MPSoC USB 3.0 Mass Storage Device Class Design Zynq UltraScale＋ MPSoC USB 3.0 CDC Device Class Design Linux USB Gadget Driver USB Host System Setup USB Host Controller Driver AXI USB Device Driver AXI USB gadget driver USB boot with Linux 2015.2 build [U-Boot,3/4] ARM64: zynqmp: Add support for USB ulpi phy reset via mode pins USB Phy/ULPI (2-读写USB Phy寄存器) USB2 UAS NULL pointer dereference USB Mass Storage大容量存储的基本知识怎么通过 /proc/scsi/usb-storage来确定u盘是/dev/sdb还是sdc 如何实现Linux下的U盘（USB Mass Storage）驱动 USB3.0 HDMI输入方案之FT601Q 米联客(MSXBO)USB3.0 FT600/FT601/FT602测试图集米联客(MSXBO)USB3.0 UVC摄像头实现基于FT602Q芯片方案【工程师分享】MPSoC设计中USB Phy的复位信号

介绍

zynqmp上用的是synopsis的ip，dwc3。

u-boot

基于zcu102开发板的基本配置，配错了编译都无法通过，

CONFIG_USB=y CONFIG_USB_ULPI_VIEWPORT=y CONFIG_USB_ULPI=y CONFIG_USB_STORAGE=y CONFIG_USB_GADGET=y CONFIG_USB_GADGET_MANUFACTURER="Xilinx" CONFIG_USB_GADGET_VENDOR_NUM=0x03fd CONFIG_USB_GADGET_PRODUCT_NUM=0x0300 CONFIG_CMD_USB=y CONFIG_USB_DWC3=y CONFIG_USB_XHCI_DWC3=y CONFIG_USB_XHCI_ZYNQMP=y CONFIG_USB_DWC3_GADGET=y CONFIG_USB_HOST=y CONFIG_USB_DWC3_GENERIC=y CONFIG_ZYNQMP_USB=y CONFIG_USB_STORAGE=y CONFIG_USB_XHCI_HCD=y CONFIG_USB_GADGET_DOWNLOAD=y

代码，dwc3 usb驱动入口在drivers\usb\dwc3\dwc3-generic.c，dwc3_generic_bind函数遍历设备树子节点，绑定host，peripheral或otg的驱动，子节点驱动不使用设备树来获取，对于host类型，绑定的子节点驱动为drivers\usb\host\xhci-zynqmp.c，

//drivers\usb\dwc3\dwc3-generic.c dwc3_generic_bind (trigger)->> //drivers\usb\host\xhci-zynqmp.c xhci_usb_probe zynqmp_xhci_core_init

u-boot下操作usb,

ZynqMP> usb usb - USB sub-system Usage: usb start - start (scan) USB controller usb reset - reset (rescan) USB controller usb stop [f] - stop USB [f]=force stop usb tree - show USB device tree usb info [dev] - show available USB devices usb test [dev] [port] [mode] - set USB 2.0 test mode (specify port 0 to indicate the device's upstream port) Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable] usb storage - show details of USB storage devices usb dev [dev] - show or set current USB storage device usb part [dev] - print partition table of one or all USB storage devices usb read addr blk# cnt - read `cnt' blocks starting at block `blk#' to memory address `addr' usb write addr blk# cnt - write `cnt' blocks starting at block `blk#' from memory address `addr' ZynqMP> usb start starting USB... USB0: Register 2000440 NbrPorts 2 Starting the controller USB XHCI 1.00 scanning bus 0 for devices... 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found ZynqMP> usb tree USB device tree: 1 Hub (5 Gb/s, 0mA) U-Boot XHCI Host Controller ZynqMP> usb reset resetting USB... USB0: Register 2000440 NbrPorts 2 Starting the controller USB XHCI 1.00 scanning bus 0 for devices... 2 USB Device(s) found scanning usb for storage devices... 1 Storage Device(s) found ZynqMP> usb tree USB device tree: 1 Hub (5 Gb/s, 0mA) | U-Boot XHCI Host Controller | +-2 Mass Storage (480 Mb/s, 300mA) Kingston DataTraveler 2.0 001A4D5F1A5CB0419945C2A1 ZynqMP> usb info 1: Hub, USB Revision 3.0 - U-Boot XHCI Host Controller - Class: Hub - PacketSize: 512 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 1.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Setting 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms 2: Mass Storage, USB Revision 2.0 - Kingston DataTraveler 2.0 001A4D5F1A5CB0419945C2A1 - Class: (from Interface) Mass Storage - PacketSize: 64 Configurations: 1 - Vendor: 0x0930 Product 0x6545 Version 1.16 Configuration: 1 - Interfaces: 1 Bus Powered 300mA Interface: 0 - Alternate Setting 0, Endpoints: 2 - Class Mass Storage, Transp. SCSI, Bulk only - Endpoint 1 In Bulk MaxPacket 512 - Endpoint 2 Out Bulk MaxPacket 512 ZynqMP> usb storage Device 0: Vendor: Kingston Rev: PMAP Prod: DataTraveler 2.0 Type: Removable Hard Disk Capacity: 14766.0 MB = 14.4 GB (30240768 x 512) ZynqMP> usb dev IDE device 0: Vendor: Kingston Rev: PMAP Prod: DataTraveler 2.0 Type: Removable Hard Disk Capacity: 14766.0 MB = 14.4 GB (30240768 x 512) ZynqMP> usb part Partition Map for USB device 0 -- Partition Type: DOS Part Start Sector Num Sectors UUID Type 1 16128 30224640 8d9140c4-01 0c Boot linux 驱动分析

xilinx驱动入口代码drivers\usb\dwc3\dwc3-of-simple.c，dwc3驱动入口代码drivers\usb\dwc3\core.c，

dwc3_probe dwc3_get_properties //获取设备树属性 usb_get_maximum_speed //USB_SPEED_SUPER "super-speed" usb_get_dr_mode of_usb_get_phy_mode dwc->hsphy_mode //nothing to be done when hsphy_mode == ulpi snps,hsphy_interface //used when DWC3_GHWPARAMS3 == DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI dwc3_simple_check_quirks //针对Xilinx的芯片修正，drivers\usb\dwc3\dwc3-of-simple.c dwc3_cache_hwparams DWC3_GHWPARAMS3 //DWC_USB3_HSPHY_INTERFACE = 0x2 dma_set_coherent_mask dwc3_get_dr_mode //根据上面设备树和内核驱动配置设置芯片是host还是peripheral dwc3_core_init dwc3_core_get_phy dwc->usb2_phy/dwc->usb3_phy dwc->usb2_generic_phy/dwc->usb3_generic_phy dwc3_core_soft_reset usb_phy_init usb2_phy/usb3_phy/usb2_generic_phy/usb3_generic_phy dwc3_config_soc_bus dwc3_phy_setup dwc3_ulpi_init //DWC3_GHWPARAMS3 == DWC3_GHWPARAMS3_HSPHY_IFC_ULPI ulpi_register_interface ulpi_register ... usb_phy_set_suspend dwc->usb2_phy usb_phy_set_suspend dwc->usb3_phy phy_power_on dwc->usb2_generic_phy phy_power_on dwc->usb3_generic_phy ... dwc3_check_params dwc3_core_init_mode otg_set_vbus(usb2_phy)/phy_set_mode(usb2_generic_phy) dwc3_debugfs_init ... 设备树

设备树节点含义，

- usb-phy : array of phandle for the PHY device. The first element in the array is expected to be a handle to the USB2/HS PHY and the second element is expected to be a handle to the USB3/SS PHY - phys: from the *Generic PHY* bindings - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy" or "usb3-phy".

例子，

&pinctrl0 { pinctrl_usb0_default: usb0-default { mux { groups = "usb0_0_grp"; function = "usb0"; }; conf { groups = "usb0_0_grp"; slew-rate = ;/*SLEW_RATE_SLOW*/ io-standard = ;/*IO_STANDARD_LVCMOS18*/ }; conf-rx { pins = "MIO52", "MIO53", "MIO55"; bias-high-impedance; }; conf-tx { pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59", "MIO60", "MIO61", "MIO62", "MIO63"; bias-disable; }; }; }; &usb0 { pinctrl-names = "default"; pinctrl-0 = ; }; &dwc3_0 { dr_mode = "host"; snps,usb3_lpm_capable; phy-names = "usb3-phy"; phys = ;/*2->PHY_TYPE_USB3=4*/ maximum-speed = "super-speed"; };

开机打印，

[ 7.690943] xilinx-psgtr fd400000.zynqmp_phy: Lane:2 type:0 protocol:3 pll_locked:yes [ 7.698965] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller [ 7.704383] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1 [ 7.712216] xhci-hcd xhci-hcd.0.auto: hcc params 0x0238f625 hci version 0x100 quirks 0x22010010 [ 7.720864] xhci-hcd xhci-hcd.0.auto: irq 48, io mem 0xfe200000 [ 7.726853] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 7.733562] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 7.740765] usb usb1: Product: xHCI Host Controller [ 7.745626] usb usb1: Manufacturer: Linux 4.14.0-xilinx-v2018.2 xhci-hcd [ 7.752308] usb usb1: SerialNumber: xhci-hcd.0.auto [ 7.757438] hub 1-0:1.0: USB hub found [ 7.761132] hub 1-0:1.0: 1 port detected [ 7.765189] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller [ 7.770607] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2 [ 7.778286] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM. [ 7.786385] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003 [ 7.793098] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 7.800301] usb usb2: Product: xHCI Host Controller [ 7.805159] usb usb2: Manufacturer: Linux 4.14.0-xilinx-v2018.2 xhci-hcd [ 7.811843] usb usb2: SerialNumber: xhci-hcd.0.auto [ 7.816926] hub 2-0:1.0: USB hub found [ 7.820617] hub 2-0:1.0: 1 port detected

大概测了一个SSD的速度，读写都可以达到292.57MB/s

root@xilinx-zcu104-2018_2:~# cat test.sh #!/bin/sh date dd if=/dev/zero of=/dev/sda1 bs=4M count=512 date date dd if=/dev/sda1 of=/dev/null bs=4M count=512 date root@xilinx-zcu104-2018_2:~# ./test.sh Fri Jul 6 04:20:40 UTC 2018 512+0 records in 512+0 records out Fri Jul 6 04:20:46 UTC 2018 Fri Jul 6 04:20:46 UTC 2018 512+0 records in 512+0 records out Fri Jul 6 04:20:52 UTC 2018 读写ULPI PHY寄存器

zynqmp通过GUSB2PHYACC_ULPI寄存器来访问ULPI PHY，地址，

0xFE20C280 (USB3_0_XHCI)0xFE30C280 (USB3_1_XHCI)

在这里插入图片描述读PHY芯片 USB3315 ID，

ZynqMP> mw 0xFE20C280 0x2000000 ZynqMP> md 0xFE20C280 1 fe20c280: 01000024 $... SMSC 3320

在 USB 控制器针对 USB 2.0 配置以及启用待机／重启状态时，该控制器会通过发送 ULPI PHY 单命令来选择终止和收发器。在 PHY 要求这些通过两个单独的命令发送时，这会导致系统挂起。GUCTL1（0x0000C11C）寄存器的位 10 需要设置为 1，以便实现与 USB 2.0 PHY 设备（SMSC 3320）的更佳互操作性，以及预防高速设备的挂起/恢复有任何问题（06/13/2017 AR# 67667）。

UAS

UAS在2018.2还不稳定，等待改进，建议使用usb-storage (BOT) driver。

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