This patchset adds support for USB for the Amlogic Meson GXL SoCs following
the work done for Linux by Martin Blumenstingl at   .
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.
This depends on the recently applied :
- clk: Add get/enable/disable/release for a bulk of clocks at 
- reset: Add get/assert/deassert/release for bulk of reset signals at 
in order to manage the clocks and resets of the Glue in a clean fashion.
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.
Changes since v1:
- switch to submitted clk/reset bulk API
- splitted dwc3 multiple phy init error between poweroff & exit
Neil Armstrong (3):
usb: host: Add simple of glue driver for DWC3 USB Controllers
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 ++++++++++++++++++++++++++++++++
drivers/usb/host/Kconfig | 7 ++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/dwc3-of-simple.c | 123 ++++++++++++++++++++
drivers/usb/host/xhci-dwc3.c | 113 ++++++++++--------
8 files changed, 645 insertions(+), 47 deletions(-)
create mode 100644 drivers/phy/meson-gxl-usb2.c
create mode 100644 drivers/phy/meson-gxl-usb3.c
create mode 100644 drivers/usb/host/dwc3-of-simple.c
U-Boot mailing list