[Fwd: [OLPC-devel] Flash driver status.]
David Woodhouse
dwmw2 at infradead.org
Mon May 15 12:08:45 EDT 2006
On Mon, 2006-05-15 at 05:06 -0700, Mark J. Foster wrote:
> An important difference is that the OLPC machine is rated at 2.5W of USB
> power /total/, not 2.5W per port (which is the standard). You do indeed
> have to be careful with add-on peripherals.
I'm aware that we can only provide 500mA in total -- that was the 'spec'
I was referring to, not the USB spec. I assume that figure isn't
intended to include the 500mA which the wireless device says it takes?
This is what I have connected... it works fine in Linux, but not in the
BIOS.
[root at olpc1 ~]# lsusb -v | egrep ^Bus\|Power\|iProduct
Bus 001 Device 002: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
iProduct 76 Cypress AT2LP RC7
Self Powered
MaxPower 2mA
Bus 001 Device 001: ID 0000:0000
iProduct 2 EHCI Host Controller
Self Powered
MaxPower 0mA
Bus 001 Device 005: ID 1286:2001
iProduct 2 MARVELL Wireless Device
MaxPower 500mA
Bus 002 Device 004: ID 05ac:020c Apple Computer, Inc.
iProduct 3 Apple Extended USB Keyboard
MaxPower 50mA
Bus 002 Device 003: ID 05ac:1003 Apple Computer, Inc.
iProduct 2 Hub in Apple Extended USB Keyboard
MaxPower 50mA
Bus 002 Device 002: ID 0bda:8150 Realtek Semiconductor Corp. RTL8150 Fast Ethernet Adapter
iProduct 2 USB 10/100 LAN
MaxPower 120mA
Bus 002 Device 001: ID 0000:0000
iProduct 2 OHCI Host Controller
Self Powered
MaxPower 0mA
--
dwmw2
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