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Subject[Patch V5 00/21] Tegra XUSB OTG support
This patch series adds OTG support on XUSB hardware used in Tegra210 and
Tegra186 SoCs.

This patchset is composed with :
- dt bindings of XUSB Pad Controller
- dt bindings for XUSB device Driver
- Tegra PHY driver for usb-role-switch and usb-phy
- Tegra XUSB host mode driver to support OTG mode
- Tegra XUSB device mode driver to use usb-phy and multi device mode
- dts for XUSB pad controller
- dts for xudc for Jetson TX1 and TX2
- dts for Jetson-TK1
- dts for Jetson-Nano

Tegra Pad controller driver register for role switch updates for
OTG/peripheral capable USB ports and adds usb-phy for that corresponding
USB ports.

Host and Device mode drivers gets usb-phy from USB2's phy and registers
notifier for role changes to perform corresponding role tasks.

Order of merging Patches:
Please merge DT changes first followed Tegra PHY driver changes and then
USB driver changes.

Tests done:
- device mode support using micro-B USB cable connection between ubuntu
host and DUT on micro-AB port
- host mode support by connecting pen-drive to micro-AB USB port on DUT
using standard-A to micro-A converter.
- toggling between these 2 modes by hot plugging corresponding cables.

DUT: Jetson-tx1, Jetson tx2, Jetson Nano(device mode test only).

- Jetson Nano DT changes are added in the series
- Removed select USB_ROLE_SWITCH from Kconfig in the change corresponding
to removal off role switch support from XUDC driver.
- Owner info is updated to port->dev for which USB role switch is used.
- Updated function name in logs, unsigned int usage as per comments.
- usb_phy_event is used instead of usb_role to detect role changes as
notifier arguments of usb-phy is used for charging current updates.
- Added ACKed-by info for corresponding patches.
- Jetson TK1 DT changes added to remove USB2-0 port from padctl node.
- Port and cable names updated in "Tests done" section of cover letter as
per JC inputs.
- Fixed arguments allignments in USB padctl driver.
- Padctl driver aborts if usb-role-switch is not present in dt for
peripheral/otg roles.
- Added Reviewed and ACKed details for corresponding patches.
- Updated usb-role-switch documentation for Padctl driver.
- Update XUDC bindings doc as suggested by Rob.
- Used standard error codes for error return.
- Added of_platform_depopulate during error and driver removal.
- Updated error variable during phy initialization in XUDC driver.
- Updated Tegra210 soc dtb file as per changes to binding doc.

Nagarjuna Kristam (21):
dt-bindings: phy: tegra-xusb: Add usb-role-switch
dt-bindings: usb: Add NVIDIA Tegra XUSB device mode controller binding
phy: tegra: xusb: Add usb-role-switch support
phy: tegra: xusb: Add usb-phy support
phy: tegra: xusb: Add support to get companion USB 3 port
phy: tegra: xusb: Add set_mode support for USB 2 phy on Tegra210
phy: tegra: xusb: Add set_mode support for UTMI phy on Tegra186
usb: xhci-tegra: Add OTG support
usb: gadget: tegra-xudc: Remove usb-role-switch support
usb: gadget: tegra-xudc: Add usb-phy support
usb: gadget: tegra-xudc: use phy_set_mode to set/unset device mode
usb: gadget: tegra-xudc: support multiple device modes
arm64: tegra: update OTG port entries for jetson-tx1
arm64: tegra: update OTG port entries for jetson-tx2
arm64: tegra: Add xudc node for Tegra210
arm64: tegra: Enable xudc on Jetson TX1
arm64: tegra: Add xudc node for Tegra186
arm64: tegra: Enable xudc node on Jetson TX2
ARM: tegra: Remove USB 2-0 port from Jetson TK1 padctl
arm64: tegra: update OTG port entries for jetson-nano
arm64: tegra: Enable xudc node on Jetson nano

.../bindings/phy/nvidia,tegra124-xusb-padctl.txt | 6 +
.../devicetree/bindings/usb/nvidia,tegra-xudc.yaml | 190 ++++++++++++++
arch/arm/boot/dts/tegra124-jetson-tk1.dts | 6 -
arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts | 23 +-
arch/arm64/boot/dts/nvidia/tegra186.dtsi | 19 ++
arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 34 ++-
arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts | 22 +-
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 19 ++
drivers/phy/tegra/Kconfig | 1 +
drivers/phy/tegra/xusb-tegra186.c | 114 +++++++--
drivers/phy/tegra/xusb-tegra210.c | 131 ++++++++--
drivers/phy/tegra/xusb.c | 172 +++++++++++++
drivers/phy/tegra/xusb.h | 5 +
drivers/usb/gadget/udc/Kconfig | 1 -
drivers/usb/gadget/udc/tegra-xudc.c | 273 ++++++++++++++-------
drivers/usb/host/xhci-tegra.c | 228 ++++++++++++++++-
include/linux/phy/tegra/xusb.h | 2 +
17 files changed, 1098 insertions(+), 148 deletions(-)
create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml


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