5 Dec
2013
5 Dec
'13
6:50 p.m.
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.