On Wed, Nov 20, 2013 at 2:34 PM, Kishon Vijay Abraham I <kishon@xxxxxx> wrote: > On Wednesday 20 November 2013 02:27 PM, Vivek Gautam wrote: >> Hi Kishon, >> >> >> On Mon, Nov 11, 2013 at 4:41 PM, Kishon Vijay Abraham I <kishon@xxxxxx> wrote: >>> Hi, >> sorry for the delayed response. >> >>> >>> On Wednesday 06 November 2013 05:37 AM, Jingoo Han wrote: >>>> On Wednesday, November 06, 2013 2:58 AM, Vivek Gautam wrote: >>>>> On Tue, Nov 5, 2013 at 5:33 PM, Jingoo Han <jg1.han@xxxxxxxxxxx> wrote: >>>> >>>> [.....] >>>> >>>>>> USB3.0 PHY consists of two blocks such as 3.0 block and 2.0 block. >>>>>> This USB3.0 PHY can support UTMI+ and PIPE3 interface for 3.0 block >>>>>> and 2.0 block, respectively. >>>>>> >>>>>> Conclusion: >>>>>> >>>>>> 1) USB2.0 PHY: USB2.0 HOST, USB2.0 Device >>>>>> Base address: 0x1213 0000 >>>>>> >>>>>> 2) USB3.0 PHY: USB3.0 DRD (3.0 HOST & 3.0 Device) >>>>>> Base address: 0x1210 0000 >>>>>> 2.0 block(UTMI+) & 3.0 block(PIPE3) >>>>> >>>>> And this is of course the PHY used by DWC3 controller, which works at >>>>> both High speed as well as Super Speed. >>>>> Right ? >>>> >>>> Right. >>>> >>>> While 3.0 block(PIPE3) can be used for Super Speed, 2.0 block(UTMI+) >>>> can be used for High speed. >>> >>> It should then come under *single IP muliple PHY* category similar to what >>> Sylwester has done. >> >> Do you mean that i should be including PHY IDs for UTMI+ phy and PIPE3 >> phy present in this PHY block ? >> AFAICS the two phys (UTMI+ and PIPE3) do not really have separate >> registers to program, and that's the reason >> we program the entire PHY in a shot. > > you mean you program the same set of bits for UTMI+ and PIPE3? No, looking closely into PHY datasheet as well as Exynos5250 manual, i can see that UTMI+ and PIPE3 phys have separate bit settings. So i think we should be able to segregate the two PHYs (UTMI+ and PIPE3). Pardon me for my earlier observations. Let me clarify more with our h/w team also on this and then i will confirm with this. > > Thanks > Kishon -- Best Regards Vivek Gautam Samsung R&D Institute, Bangalore India -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
