On Tuesday, November 05, 2013 6:37 PM, Kamil Debski wrote: > On Tuesday, November 05, 2013 8:20 AM, Vivek Gautam wrote: > > On Mon, Nov 4, 2013 at 6:42 PM, Kishon Vijay Abraham I <kishon@xxxxxx> wrote: > > > On Monday 04 November 2013 03:45 PM, Kamil Debski wrote: > > >> On Monday, November 04, 2013 7:55 AM, Kishon Vijay Abraham I wrote: > > >>> On Thursday 31 October 2013 01:15 PM, Vivek Gautam wrote: > > >>>> > > >>>> Add a new driver for the USB 3.0 PHY on Exynos5 series of SoCs. > > >>>> The new driver uses the generic PHY framework and will interact > > >>>> with > > >>>> DWC3 controller present on Exynos5 series of SoCs. > > >>> > > >>> > > >>> In Exynos, you have a single IP that supports both USB3 and USB2 > > PHY > > >>> right? I think that needs to be mentioned here. > > >> > > >> > > >> As far as I know the IP is different. > > > > > > > > > Ok. Sometime back Vivek was mentioning about a single IP for both > > USB3 > > > and USB2. Thought it should be this driver. Anyway thanks for the > > clarification. > > > > Right Kishon, I had mentioned that Exynos5's dwc3 controller have a > > single IP for USB2 and USB3 phy. > > From what i see, on exynos5 systems the dwc3 controller uses a combo of > > usb 2 (utmi+) and usb 3 (pipe 3) phy (with base address starting > > 0x12100000). > > > > Kamil, Tomasz, > > > > Please correct me if i am wrong. > > I have the Exynos 5250 documentation and I found two phy register ranges: > 1) USB 2.0 PHY having the base address of 0x1213 0000 > Chapter 33. USB 2.0 Host Controller > Subchapter 33.5.2 Phy Control Register p. 1696 > First register's description is > "USB2.0 phy control register" > 2) USB 3.0 PHY (I guess) with the base address 0x1210 0000 > Chapter 35. USB 3.0 DRD Controller > Subchapter 35.4.6 PHY Control Register p. 1872 > > Jingoo, could you comment on the above? You may know more than we do :) Hi Kamil, Thank you for trusting me. :-) I just asked my validation engineer about 5250 USB PHY. As I know, she has the best knowledge about Samsung SoC USB hardware. She said that there are 2 PHY controllers such as USB 2.0 PHY, USB 3.0 PHY. 1) USB2.0 PHY: USB2.0 HOST, USB2.0 Device 2) USB3.0 PHY: USB3.0 DRD (3.0 HOST & 3.0 Device) > In addition, I have a question to you Vivek - does your USB 3.0 > PHY support both host and device? According to her, USB3.0 PHY can support both 3.0 Host and 3.0 Device. Thank you. Best regards, Jingoo Han -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
