This series adds support for xHCI on NVIDIA Tegra SoCs. This includes:
- patches 1 and 2: adding a driver for the mailbox used to communicate
with the xHCI controller's firmware,
- patches 3 and 4: extending the XUSB pad controller driver to support
the USB PHY types (UTMI, HSIC, and USB3),
- patches 5 and 6: adding a xHCI host-controller driver, and
- patches 7, 8, and 9: updating the relevant DT files.
The PHY and host drivers have compile-time dependencies on the mailbox
driver, and the host driver has compile-time dependencies on the PHY
driver. It is probably best if these all get merged through the Tegra
tree.
Based on 3.17-rc3, Jassi Brar's common mailbox framework [0], and my
xHCI modules series [1].
Tested on Venice2, Jetson TK1, and Big with a variety of USB2.0 and
USB3.0 memory sticks and ethernet dongles using controller firmware
recently posted by Andrew Chew [2].
Notes:
- HSIC support is mostly untested and I think there are still some issues
to work out there. I do have a Tegra124 board with a HSIC hub so I'll
try to sort those out later.
- The XUSB padctl driver doesn't play nice with the existing Tegra USB2.0
PHY driver, so all ports should be assigned to the XHCI controller.
Based on work by:
a lot of people, but from what I can tell from the L4T tree [3], the
original authors of the Tegra xHCI driver are:
Ajay Gupta <ajayg@xxxxxxxxxx>
Bharath Yadav <byadav@xxxxxxxxxx>
Chagnes from v2:
- Dropped mailbox channel specifier. The mailbox driver allocates virtual
channels backed by the single physical channel.
- Added support for HS_CURR_LEVEL adjustment pinconfig property, which
will be required for the Blaze board.
- Addressed Stephen's review comments.
Changes from v1:
- Converted mailbox driver to use the common mailbox framework.
- Fixed up host driver so that it can now be built and used as a module.
- Addressed Stephen's review comments.
- Misc. cleanups.
Changes from RFC:
- Dropped Tegra114 support.
- Split out mailbox into separate driver.
- Stopped using child xhci-plat device in xHCI host-controller driver.
- Added PHY support to Thierry's XUSB padctl driver instead of in a separate
USB PHY driver.
- Added Jetson TK1 support.
- Misc. cleanups.
[0] https://lkml.org/lkml/2014/8/1/200
[1] https://lkml.org/lkml/2014/8/18/504
[2] https://patchwork.ozlabs.org/patch/384013/
[3] git://nv-tegra.nvidia.com/linux-3.10.git
Andrew Bresticker (9):
of: Add NVIDIA Tegra XUSB mailbox binding
mailbox: Add NVIDIA Tegra XUSB mailbox driver
of: Update Tegra XUSB pad controller binding for USB
pinctrl: tegra-xusb: Add USB PHY support
of: Add NVIDIA Tegra xHCI controller binding
usb: xhci: Add NVIDIA Tegra xHCI host-controller driver
ARM: tegra: Add Tegra124 XUSB mailbox and xHCI controller
ARM: tegra: jetson-tk1: Add xHCI support
ARM: tegra: venice2: Add xHCI support
.../bindings/mailbox/nvidia,tegra124-xusb-mbox.txt | 32 +
.../pinctrl/nvidia,tegra124-xusb-padctl.txt | 56 +-
.../bindings/usb/nvidia,tegra124-xhci.txt | 104 ++
arch/arm/boot/dts/tegra124-jetson-tk1.dts | 48 +-
arch/arm/boot/dts/tegra124-venice2.dts | 79 +-
arch/arm/boot/dts/tegra124.dtsi | 41 +
drivers/mailbox/Kconfig | 3 +
drivers/mailbox/Makefile | 2 +
drivers/mailbox/tegra-xusb-mailbox.c | 290 +++++
drivers/pinctrl/Kconfig | 1 +
drivers/pinctrl/pinctrl-tegra-xusb.c | 1233 +++++++++++++++++++-
drivers/usb/host/Kconfig | 9 +
drivers/usb/host/Makefile | 1 +
drivers/usb/host/xhci-tegra.c | 905 ++++++++++++++
include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h | 20 +
include/soc/tegra/xusb.h | 53 +
16 files changed, 2796 insertions(+), 81 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt
create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt
create mode 100644 drivers/mailbox/tegra-xusb-mailbox.c
create mode 100644 drivers/usb/host/xhci-tegra.c
create mode 100644 include/soc/tegra/xusb.h
--
2.1.0.rc2.206.gedb03e5
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