On 11/02/2018 22:15, Martin Blumenstingl 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 > > .../devicetree/bindings/usb/amlogic,dwc3.txt | 42 ++++++++++++++++++++++ > drivers/usb/dwc3/dwc3-of-simple.c | 31 ++++++++++++---- > 2 files changed, 67 insertions(+), 6 deletions(-) > create mode 100644 Documentation/devicetree/bindings/usb/amlogic,dwc3.txt > Hi Martin, Successfully tested on Amlogic Q200 Reference Design board with a Meson GXM S912 SoC. Other patchsets included : - improvements and fixes for the phy-meson-gxl-usb2 driver https://lkml.kernel.org/r/20180128202245.25021-1-martin.blumenstingl@xxxxxxxxxxxxxx - initialize (multiple) PHYs for a HCD V11 https://lkml.kernel.org/r/20180303214309.25643-1-martin.blumenstingl@xxxxxxxxxxxxxx - Meson GXL USB3 PHY driver V4 https://lkml.kernel.org/r/20180303184700.21480-1-martin.blumenstingl@xxxxxxxxxxxxxx Tested-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Thanks, Neil -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
