On Mon, 8 Mar 2010, tsao.terence wrote:
> Hi Linux masters,
>
> I am currently using the TS7260 USB port to power on my slave device(radio
> card). I will very like to the power off the USB when I am not talking to
> the slave device. After messing with Jim Jackson's cctl command line
> program, I couldnt quite get that to work, this is what I did:
>
> $cctl -w USB=off
> USB=off
>
> I still see USB port supply power to the slave device......
Hi
That only turns off the USB sub-system on the cpu chip, saving you a bit of
power consumption. I believe TS provide programmable control of the
5V USB power on the TS7260, so it should be possible. However I don't have
a TS7260, so didn't add that to cctl.
If someone lets me know the bit details, I could add it to cctl, but would
need someone with a ts7260 to do testing for me.
Jim
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