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Re: [Discuss-gnuradio] About clock rate of USRP E100
From: |
Miok Wah |
Subject: |
Re: [Discuss-gnuradio] About clock rate of USRP E100 |
Date: |
Tue, 11 Jan 2011 12:35:32 -0800 (PST) |
Hi Philip,
Thanks a lot for your kind help!
>From the description here:
http://elinux.org/OMAP_Power_Management#DVFS:_Dynamic_Voltage_and_Frequency_Scaling
I see that it's possible to change the operating frequency of the OMAP using
certain commands.
Do you know if E100 supports such commands?
Thanks again!
Philip Balister wrote:
>
>
> There are two clock rates to consider: there is the fpga clock rate
> which is settable via uhd. I'm not good enough at fpga's to know how
> much power can be saved this way.
>
> The OMAP3 clock circuitry allows sections of the OMAP to be turned off,
> or clocked at lower rates to save power. This is how they use this chip
> in mobile devices. That said, the kernel and user space provided with
> the E100 has the clock rate set to the max possible and does not take
> advantage of the OMAP power saving features. It should be possible to do
> work in this area with the E100 though. There is lots of activity on the
> linux-omap kernel mailing list in the power management area.
>
> Philip
>
--
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- Re: [Discuss-gnuradio] About clock rate of USRP E100, (continued)
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Philip Balister, 2011/01/10
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Alexander Chemeris, 2011/01/11
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Miok Wah, 2011/01/11
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Matt Ettus, 2011/01/11
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Miok Wah, 2011/01/11
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Josh Blum, 2011/01/20
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Miok Wah, 2011/01/24
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Alexander Chemeris, 2011/01/12
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Matt Ettus, 2011/01/13
- Re: [Discuss-gnuradio] About clock rate of USRP E100, Marcus D. Leech, 2011/01/11
Re: [Discuss-gnuradio] About clock rate of USRP E100,
Miok Wah <=