Hi, Felipe Balbi wrote: > Hi,, > > On Mon, Jul 21, 2014 at 10:03:07AM +0200, Lothar Waßmann wrote: > > Hi, > > > > > On Fri, Jul 18, 2014 at 11:31:29AM +0200, Lothar Waßmann wrote: > > > > This patch makes it possible to use the musb driver with HW that > > > > requires external regulators or clocks. > > > > > > can you provide an example of such HW ? Are you not using the internal > > > PHYs ? > > > > > The Ka-Ro electronics TX48 module uses the mmc0_clk pin as VBUSEN > > rathern than usb0_drvvbus. This patch makes it possible to use an > > external regulator to handle the VBUS switch through the 'vcc-supply' > > property of the underlying generic_phy device. > > OK, I get it now. But why would not use usb0_drvvbus ? You could still > route usb0_drvvbus to the regulator enable pin and the regulator would > be enabled for you once correct values are written to the IP's mailbox. > > I suppose this has something to do with layout constraints ? > Yes. The usb0_drvvbus is used for a different purpose. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | info@xxxxxxxxxxxxxxxxxxx ___________________________________________________________ -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
