VVDN_T4MFCS_Scaleout_User_Manual Rev. A0-03
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CONFIDENTIAL
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 2048 Interval 255ms
SD Card Interface
6.7
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 Interface
6.8
PCIe Interface Testing can 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]
- display PCI configuration space (CFG)
pci next[.b, .w, .l] b.d.f address - modify, read and keep CFG address
pci modify[.b, .w, .l] b.d.f address - modify, auto increment CFG
address
pci write[.b, .w, .l] b.d.f address value - write to CFG address