This patchset adds support for USB for the Amlogic Meson GXL SoCs following the work done for Linux by Martin Blumenstingl at [1] [2] [3].
The support consist of : - A port of dwc3-of-simple from Linux to U-boot - A change to support more than 2 PHYs in the DWC3 DM driver - An USB2 PHY Driver and an USB3 PHY Driver
The DWC3 Controller has up to 4 PHYs connected : - 2 USB2 PHYs and an USB3 PHY for GXL SoCs - 3 USB2 PHYs and an USB3 PHY for the GXM SoC Variant This is enabled by the "usb: host: dwc3: Add support for multiple PHYs" patch. This patch is based on the "xhci-dwc3: Couple of fixes for USB3 support" serie from Vignesh R, on the u-boot-usb tree.
The DWC3 Controller glue is generic enough to use the dwc3-of-simple from Linux and can be easily ported to U-Boot as a Simple-Bus with Glue-Specific clocks and Reset lines setup.
The USB PHY driver supports the standard generic PHY interface and supports the power-on/off calls and set the Host mode by default. They are based on the excellent work from Martin Blumenstingl merged in linux.
[1] https://lkml.kernel.org/r/20180303184700.21480-1-martin.blumenstingl@googlem... [2] https://lkml.kernel.org/r/20180128202245.25021-1-martin.blumenstingl@googlem... [3] https://lkml.kernel.org/r/20180303214309.25643-1-martin.blumenstingl@googlem...
Neil Armstrong (3): usb: host: Add simple of glue driver for DWC3 USB Controllers integration usb: host: dwc3: Add support for multiple PHYs phy: Add Amlogic Meson USB2 & USB3 Generic PHY drivers
drivers/phy/Kconfig | 8 ++ drivers/phy/Makefile | 1 + drivers/phy/meson-gxl-usb2.c | 238 +++++++++++++++++++++++++++++++++++++++++++ drivers/phy/meson-gxl-usb3.c | 201 ++++++++++++++++++++++++++++++++++++ 4 files changed, 448 insertions(+) create mode 100644 drivers/phy/meson-gxl-usb2.c create mode 100644 drivers/phy/meson-gxl-usb3.c