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: - Add setting of pinmux for USB VBUS GPIO - Decode USB VBUS GPIO from the fdt - Decode phy type differently (to match new kernel fdt) - Improve debug() printouts in case of failure to init USB - Remove 0x from fdt aliases - Remove non-fdt operation of USB, since it is not needed - Remove unneeded CONFIG_TEGRA_USBx defines - Rename params to timing - Rename tegra20-usb to tegra20-ehcui (to match new kernel fdt) - Store entire fdt config in port list, not just register pointer - Use "okay" instead of "ok" for fdt node status
Changes in v3: - Disable USB2 which is not used on Seaboard - Drop Tegra USB alignment patch as we will deal with this another way - Fix device tree indenting with tabs instead of spaces - Remove "okay" from nodes since this is the default anyway - Remove usbparams properties from fdt and moved them to C code
Changes in v4: - Add clock bindings for Tegra2x - Add fdtdec function to return peripheral ID - Add staging area for device tree bindings used in U-Boot - Use peripheral clock node to obtain peripheral ID - Use updated fdtdec alias functiona to get USB aliases
Changes in v5: - Add CONFIG_EHCI_DCACHE which is needed for dcache operation - Add additional debugging to report active USB ports - Add dr_mode property to control host/device/otg mode - Add nvidia,has-legacy-mode property per review comments - Allow any port to operate in otg mode - Change device tree comment style from // to /* */ - Correct PTS_MASK value to be unsigned - Drop unused CONFIG_USB_EHCI_DATA_ALIGN option - Fixed endian bug in fdtdec_decode_gpios() - Implement new device tree properties - Make sure GPIO name is NULL if incorrectly decoded - Put pinmux setting into a board-specific function - Remove checking of peripheral ID and try to use only device tree - Remove support-host-mode property - Report error if phy clock does not start up - Update README to indicate that we will commit fdt documentation to U-Boot
Simon Glass (18): 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 | 460 ++++++++++++++++++++++++ arch/arm/cpu/armv7/u-boot.lds | 5 + arch/arm/dts/skeleton.dtsi | 13 + arch/arm/dts/tegra20.dtsi | 202 +++++++++++ arch/arm/include/asm/arch-tegra2/tegra2.h | 2 + arch/arm/include/asm/arch-tegra2/usb.h | 252 +++++++++++++ board/nvidia/common/board.c | 12 + board/nvidia/common/board.h | 6 + board/nvidia/dts/tegra2-seaboard.dts | 46 +++ board/nvidia/seaboard/seaboard.c | 6 + doc/device-tree-bindings/README | 17 + doc/device-tree-bindings/clock/tegra-periphclk | 51 +++ doc/device-tree-bindings/usb/tegra-usb.txt | 25 ++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-hcd.c | 7 + drivers/usb/host/ehci-tegra.c | 62 ++++ drivers/usb/host/ehci.h | 6 +- dts/Makefile | 2 +- include/configs/seaboard.h | 12 + include/configs/tegra2-common.h | 10 + include/fdtdec.h | 59 +++ lib/fdtdec.c | 93 +++++ 25 files changed, 1355 insertions(+), 3 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