On Sun, Jul 26, 2020 at 09:10:39AM +0200, Mike Looijmans wrote: > On 23-07-2020 13:05, Mark Brown wrote: > > Does the device actually support running without power so that's a thing > > that can happen? _get_optional() should only ever be used for supplies > > that may be physically absent. > It's the 5V VBUS power for the USB "plug" that's being controlled here. It > must turned on when the controller is in "host" mode. Some boards arrange > this in hardware through the PHY, and some just don't have any control at > all and have it permanently on or off. On a board where the 5V is controlled > using a GPIO line or an I2C chip, this patch is required to make it work. That sounds like the driver should not be using _get_optional() then.
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