* Roger Quadros <rogerq@xxxxxx> [140707 01:36]: > Hi Tony, > > On 07/07/2014 11:29 AM, Tony Lindgren wrote: > > * Roger Quadros <rogerq@xxxxxx> [140704 02:57]: > >> After clarification from the hardware team it was found that > >> this 1.8V PHY supply can't be switched OFF when SoC is Active. > >> > >> Since the PHY IPs don't contain isolation logic built in the design to > >> allow the power rail to be switched off, there is a very high risk > >> of IP reliability and additional leakage paths which can result in > >> additional power consumption. > >> > >> The only scenario where this rail can be switched off is part of Power on > >> reset sequencing, but it needs to be kept always-on during operation. > >> > >> This patch is required for proper functionality of USB, SATA > >> and PCIe on DRA7-evm. > >> > >> CC: Rajendra Nayak <rnayak@xxxxxx> > >> CC: Tero Kristo <t-kristo@xxxxxx> > >> Signed-off-by: Roger Quadros <rogerq@xxxxxx> > > > > Best that you queue this with the series: > > This patch doesn't have any dependency with the others and we're not even sure if > this series will hit 3.16. > > But this 1V8 regulator _is_ required for normal operation of the SoC, whether the > PHYs are in use or not. > > Can you please queue just this patch for SoC fixes for 3.16? Thanks. OK will do. Regards, Tony -- 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
