[U-Boot] [PATCH REPOST] ARM: rpi_b: power on SDHCI and USB HW modules

[Andre Heider]

Hi Stephen,

On Tue, Dec 03, 2013 at 09:01:55PM -0700, Stephen Warren wrote:
> Send RPC commands to the VideoCore to turn on the SDHCI and USB modules.
> For SDHCI this isn't needed in practice, since the firmware already
> turned on the power in order to load U-Boot. However, it's best to be
> explicit. For USB, this is necessary, since the module isn't powered
> otherwise. This will allow the kernel USB driver to work.

I didn't test this patch yet, but from skimming over it it looks similar to
what I tried with barebox a while back.

What I did notice with the "set power" mbox call is that it takes way longer
than 100ms (the current mbox call timeout) to finish on a cold boot. You
don't seem to bump the timeout here, and with 100ms I always hit it and
hence the mbox call failed for me. Don't you get these huge delays?

Regards,
Andre