On Aug 20, 2013, at 9:54 AM, Ivan T. Ivanov wrote: > > Hi, > > On Tue, 2013-08-20 at 09:33 -0500, Felipe Balbi wrote: >> On Tue, Aug 20, 2013 at 05:09:11PM +0300, Ivan T. Ivanov wrote: >>> Hi, >>> >>> On Tue, 2013-08-20 at 08:37 -0500, Felipe Balbi wrote: >>>> Hi, >>>> >>>> On Tue, Aug 20, 2013 at 04:32:23PM +0300, Ivan T. Ivanov wrote: >>>>>> On Tue, Aug 20, 2013 at 12:56:04PM +0300, Ivan T. Ivanov wrote: >>>>>>> From: "Ivan T. Ivanov" <iivanov@xxxxxxxxxx> >>>>>>> >>>>>>> These drivers handles control and configuration of the HS >>>>>>> and SS USB PHY transceivers. They are part of the driver >>>>>>> which manage Synopsys DesignWare USB3 controller stack >>>>>>> inside Qualcomm SoC's. >>>>>>> >>>>>>> Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx> >>>>>>> --- >>>>>>> drivers/usb/phy/Kconfig | 11 ++ >>>>>>> drivers/usb/phy/Makefile | 2 + >>>>>>> drivers/usb/phy/phy-msm-dwc3-hs.c | 327 ++++++++++++++++++++++++++++++++ >>>>>>> drivers/usb/phy/phy-msm-dwc3-ss.c | 374 +++++++++++++++++++++++++++++++++++++ >>>>>> >>>>>> please rename these PHY drivers, they have nothing to do with DWC3. PHYs >>>>>> don't care about the USB controller. >>>>> >>>>> I think they are SNPS DesignWare PHY's, additionally >>>>> wrapped with Qualcomm logic. I could substitute "dwc3" >>>>> with just "dw", which will be more correct. >>>> >>>> alright, thank you. Let's add Paul to the loop since he might have very >>>> good insight in the synopsys PHYs. >>>> >>>> mental note: if any other platform shows up with Synopsys PHY, ask them >>>> to use this driver instead :-) >>> >>> I really doubt that this will bi possible. Control of the PHY's is >>> not directly trough ULPI, UTMI or PIPE3 interfaces, but trough >>> QSCRATCH registers, which of course is highly Qualcomm specific. >> >> isn't it a memory mapped IP ? doesn't synopsys provide their own set of >> registers ? > > From what I see it is not directly mapped. How QSCRATCH write and > reads transactions are translated to DW IP is unclear to me. I think the question is how does SW access them? - k -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- 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
