[U-Boot] [PATCH REPOST] ARM: rpi_b: power on SDHCI and USB HW modules
Stephen Warren
swarren at wwwdotorg.org
Thu Dec 5 18:50:27 CET 2013
On 12/03/2013 09:01 PM, 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.
BTW, I should mention that I'd particularly like to get this patch into
2014.01, since Linux kernel 3.14 will rely on the USB controller being
powered, since kernel USB support is now enabled in linux-next.
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