On 3/8/10, Jim Jackson <> wrote:
>
>
>
> 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
>
power management register: 0x1200_0000
USB 5V power: bit 1
--
Joel R. Morgan
Morgan Millwright Services, Inc.
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