On Thu, 10 Jun 2010, Yan Seiner wrote:
> The TS-7200 says:
>
> The Ethernet PHY chip can be powered down, under software control, to save
> approximately 90 mA of current consumption. This is controlled by the
> EP9302 Digital
> output on Port H, bit 2. A logic zero will power down the KS8721 PHY
> interface.
>
> Before I go reinventing the wheel, is there a /sys or /proc interface
> that lets me do this? I am running 2.6.29 with Mattheiu Crapet's patches.
My cctl utility can control this from user space.
> Also, I have the 2x24 LCD display. The technologic website has no
> documentation on this. Anyone know if there is a way to turn off the
> backlight or to power it down under software control?
Not that I know. Different LCDs have different, or no, back lighting
arrangements. It shouldn't be difficult to hook a transistor or mosfet up
if you have a spare I/O bit somewhere. I tend to use an LCD without
backlighting.
Jim
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HomePage: http://www.comp.leeds.ac.uk/jj
TS7200 Page: http://www.comp.leeds.ac.uk/jj/linux/arm-sbc.html
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