[U-Boot] [PATCH v4 0/20] tegra: Add fdt definitions and USB driver

[Simon Glass]

This series brings in the Linux kernel fdt file and provides a working
USB driver for Tegra2 Seaboard.

(I have done this in one series since otherwise most of the fdt additions
will just look like dead code.)

The driver requires CONFIG_OF_CONTROL and a device tree to operate.

Some enhancements to fdtdec are required to make this easier, and these
are included in the series also. I have had to bring in basic GPIO
support due to the request to put the USB VBUS into the fdt.

Since the kernel recently got a very minimal USB binding, I have started
with that and extended it where appropriate.

Tegra likes to have cache-aligned buffers. I have dropped the patch which
implements this since we will solve this problem by making callers align
their buffers (as we did with MMC).

Changes in v2:
- Use "okay" instead of "ok" for fdt node status
- Remove 0x from fdt aliases
- Rename params to timing
- Store entire fdt config in port list, not just register pointer
- Remove non-fdt operation of USB, since it is not needed
- Decode USB VBUS GPIO from the fdt
- Decode phy type differently (to match new kernel fdt)
- Rename tegra20-usb to tegra20-ehcui (to match new kernel fdt)
- Improve debug() printouts in case of failure to init USB
- Add setting of pinmux for USB VBUS GPIO
- Remove unneeded CONFIG_TEGRA_USBx defines

Changes in v3:
- Remove "okay" from nodes since this is the default anyway
- Fix device tree indenting with tabs instead of spaces
- Disable USB2 which is not used on Seaboard
- Remove usbparams properties from fdt and moved them to C code
- Drop Tegra USB alignment patch as we will deal with this another way

Changes in v4:
- Add staging area for device tree bindings used in U-Boot
- Add clock bindings for Tegra2x
- Add fdtdec function to return peripheral ID
- Use updated fdtdec alias functiona to get USB aliases
- Use peripheral clock node to obtain peripheral ID

Simon Glass (20):
  fdt: Tidy up a few fdtdec problems
  fdt: Add functions to access phandles, arrays and bools
  fdt: Add basic support for decoding GPIO definitions
  arm: fdt: Ensure that an embedded fdt is word-aligned
  arm: fdt: Add skeleton device tree file from kernel
  tegra: fdt: Add Tegra2x device tree file from kernel
  tegra: fdt: Add device tree file for Tegra2 Seaboard from kernel
  fdt: Add staging area for device tree binding documentation
  fdt: Add tegra-usb bindings file from linux
  tegra: fdt: Add additional USB binding
  tegra: fdt: Add clock bindings
  tegra: usb: fdt: Add additional device tree definitions for USB ports
  tegra: usb: fdt: Add USB definitions for Tegra2 Seaboard
  usb: Add support for txfifo threshold
  fdt: Add function to return peripheral/clock ID
  tegra: usb: Add support for Tegra USB peripheral
  tegra: usb: Add USB support to nvidia boards
  tegra: usb: Add common USB defines for tegra2 boards
  tegra: usb: Enable USB on Seaboard
  tegra: fdt: Enable FDT support for Seaboard

 README                                         |    3 +
 arch/arm/cpu/armv7/tegra2/Makefile             |    4 +-
 arch/arm/cpu/armv7/tegra2/config.mk            |    2 +
 arch/arm/cpu/armv7/tegra2/usb.c                |  426 ++++++++++++++++++++++++
 arch/arm/cpu/armv7/u-boot.lds                  |    5 +
 arch/arm/dts/skeleton.dtsi                     |   13 +
 arch/arm/dts/tegra20.dtsi                      |  199 +++++++++++
 arch/arm/include/asm/arch-tegra2/tegra2.h      |    2 +
 arch/arm/include/asm/arch-tegra2/usb.h         |  255 ++++++++++++++
 board/nvidia/common/board.c                    |    8 +
 board/nvidia/dts/tegra2-seaboard.dts           |   47 +++
 doc/device-tree-bindings/README                |   19 +
 doc/device-tree-bindings/clock/tegra-periphclk |   51 +++
 doc/device-tree-bindings/usb/tegra-usb.txt     |   17 +
 drivers/usb/host/Makefile                      |    1 +
 drivers/usb/host/ehci-hcd.c                    |    7 +
 drivers/usb/host/ehci-tegra.c                  |   63 ++++
 drivers/usb/host/ehci.h                        |    6 +-
 dts/Makefile                                   |    2 +-
 include/configs/seaboard.h                     |   12 +
 include/configs/tegra2-common.h                |   14 +
 include/fdtdec.h                               |  121 +++++++-
 lib/fdtdec.c                                   |  181 ++++++++++-
 23 files changed, 1445 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm/cpu/armv7/tegra2/usb.c
 create mode 100644 arch/arm/dts/skeleton.dtsi
 create mode 100644 arch/arm/dts/tegra20.dtsi
 create mode 100644 arch/arm/include/asm/arch-tegra2/usb.h
 create mode 100644 board/nvidia/dts/tegra2-seaboard.dts
 create mode 100644 doc/device-tree-bindings/README
 create mode 100644 doc/device-tree-bindings/clock/tegra-periphclk
 create mode 100644 doc/device-tree-bindings/usb/tegra-usb.txt
 create mode 100644 drivers/usb/host/ehci-tegra.c

-- 
1.7.7.3