VVDN_T4240MFCS_User_Manual
Rev. A0-02
32
CONFIDENTIAL
u-boot EHCI Host Controller
=> usb info
1: Hub, USB Revision 2.0
- u-boot EHCI Host Controller
- Class: Hub
- PacketSize: 64 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 2048 Interval 255ms
SD Card Interface
7.7
U-boot provides the standard command "mmc" to check, read, erase and write SD Card.
=>help mmc
mmc - MMC sub system
Usage:
mmc read <device num> addr blk# cnt
mmc write <device num> addr blk# cnt
mmc rescan <device num>
mmc list - lists available devices
PCIe Intaerface
7.8
PCIe Interface Testing an be done from u-boot level. PCI commands will show you the device ids of the
devices connected to pci bus.
The objective of bring up of PCIe interface
1. Successful Scanning, reading and writing all PCI Devices connected to pci bus of T4240.
Following are the u-boot commands
pci [bus] [long] - short or long list of PCI devices on bus 'bus'
pci header b.d.f - show header of PCI device 'bus.device.function'
pci display[.b, .w, .l] b.d.f [address] [# of objects]