Hi Kishon,
On Wed, Dec 4, 2013 at 7:58 PM, Kishon Vijay Abraham I <kis...@ti.com> wrote: > Hi Vivek, > > On Wednesday 20 November 2013 09:14 PM, Kishon Vijay Abraham I wrote: >> Hi, >> >> On Wednesday 20 November 2013 03:02 PM, Vivek Gautam wrote: >>> On Wed, Nov 20, 2013 at 2:34 PM, Kishon Vijay Abraham I <kis...@ti.com> >>> 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 <kis...@ti.com> >>>>> 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....@samsung.com> 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. >> >> no problem.. >>> Let me clarify more with our h/w team also on this and then i will >>> confirm with this. > > Did you get more information on this? Yes, i have been in contact with our hardware team. The functionality of setting up UTMI+ and PIPE3 phys separately, and thereby using only one functionality of the two at some point of time (either high speed or super speed) hasn't been tested so far. So i will be looking into this and try to find out proper init sequences for the two available PHYs separately and as soon as i get a working solution for this, i will update. > > Thanks > Kishon -- Best Regards Vivek Gautam Samsung R&D Institute, Bangalore India -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
