XO-1 vs Sugar 0.104 performance, and swap to NAND Flash
quozl at laptop.org
Mon Apr 13 02:44:55 EDT 2015
On Mon, Apr 13, 2015 at 05:56:22AM +0000, Yioryos Asprobounitis wrote:
> James wrote:
> > To check, make sure the laptop is unlocked, and add this to the
> > second line of the boot/olpc.fth file:
> > dev /sd patch 2drop cb! sdhci-card-power-off dend
> Does this keep the SD slot powered only when is occupied or
Regardless, but only if the slot is powered up for access.
> Does the OS takes over the SD slot power management after boot?
Yes. The firmware driver is not used by the kernel.
> If not, can OFW detect the presence of an external SDcard early, and
> keep it powered only then or detect its absence latter in the boot
> sequence and revert?
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