Hello Felipe, Hello Greg, On Tue, Feb 20, 2018 at 11:39 PM, Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: > Hello Felipe, > > On Sun, Feb 11, 2018 at 10:15 PM, Martin Blumenstingl > <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: >> Amlogic Meson AXG and GXL SoCs can use the dwc3-of-simple with little >> modifications. These SoCs use: >> - a gate clock for the USB components (DWC3, USB PHYs) >> - a reset line which is shared across all USB components (DWC3, USB2 and >> USB3 PHYs, OTG detection logic inside the USB3 PHY registers) >> - a reset pulse to trigger the reset >> - depending on the SoC two or more PHYs (AXG: 1x USB2 and 1x USB3 PHY, >> GXL: 2x USB2 and 1x USB3 PHY) >> >> This extends the dwc3-of-simple so it supports (depending on the >> platform) shared and level resets. Additionally it adds new bindings >> for the Amlogic Meson AXG and GXL SoCs, along with the documentation >> (dt-bindings). >> >> NOTE: for full support on Amlogic Meson GXL SoCs my other series called >> "initialize (multiple) PHYs for a HCD" (see [0] for v8 of that series) >> is required. However, there is no direct dependency on that series. >> Especially since Meson AXG doesn't need it (since it only has one USB2 >> and one USB3 PHY, which is already supported by the current dwc3 driver, >> unlike the 2x USB2 and 1x USB3 PHYs on Meson GXL). >> So I believe that this series can still be merged, even if the other >> patchset is not ready yet. >> >> >> changes since v1 at [1]: >> - use of_device_is_compatible() instead of struct dwc3_of_simple_params >> as requested by Felipe Balbi (affects PATCH #2 and #3) >> - added Rob's Acked-by to the dt-bindings patch >> - added Yixun Lan's Tested-by to the whole series as he tested this >> successfully (along with other patches) on the Amlogic Meson AXG SoC >> >> >> [0] http://lists.infradead.org/pipermail/linux-amlogic/2018-January/006274.html >> [1] http://lists.infradead.org/pipermail/linux-amlogic/2018-January/006286.html >> >> Martin Blumenstingl (3): >> dt-bindings: usb: add support for dwc3 controller on Amlogic Meson GX >> usb: dwc3: of-simple: add support for shared and pulsed reset lines >> usb: dwc3: of-simple: add support for the Amlogic Meson GXL and AXG >> SoCs > could you please let me know if you spotted any problems, code-style > issues in v2 or whether you are waiting for feedback from another > maintainer? > in case everything is fine: will you take this series through your tree? could you please let me know how this series is supposed to land in the next kernel release: - Felipe, will you take it through your usb tree (which contains many other dwc2/dwc3 driver changes)? - Greg, will you take it through your usb-next tree? - should Kevin apply it to his linux-amlogic tree (drivers branch, which goes to the the arm-soc tree)? as noted in the cover-letter Meson AXG support does not depend on any other series Regards Martin -- 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
