Bus number 4 doesn't exist in the mainline kernel. The device is
attached to bus number 3. (In the ChromeOS kernel, one of the I2C
busses is split in two with a mux, this pushing all later busses
to a higher bus number. In this case, 4 is the correct bus number
for the ADT7461).
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Every board file includes the same platform data definition
for the i2c-tegra driver's bus speed.  Move the platform data
into devices.c, and remove it from all the board files.
Signed-off-by: NColin Cross <ccross@android.com>
Tested-by: NKonstantin Sinyuk <kostyas@compulab.co.il>
Acked-by: NOlof Johansson <olof@lixom.net>

Ensure the built-in eMMC is always named mmcblk0.

This is important because:

* U-Boot statically assigns MMC device IDs based on controller ID.
* U-Boot assumes that kernel MMC device ID numbering matches U-Boot numbering.
* U-Boot provides a kernel cmdline option e.g. root=/dev/mmcblk0p3 based on
  that numbering.
* The kernel dynamically assigns MMC device IDs based on enumeration order of
  the memory behind the host controller, rather than statically based on host
  controller ID like U-Boot.
* By registering the SDHCI controller for the built-in eMMC first, the
  enumeration of the built-in eMMC is performed first, and hence eMMC gets
  assigned ID 0 just like U-Boot. If the SD slot is filled, it then gets
  assigned ID 1 just like U-Boot.
* If the MMC IDs mismatch, and the system boots from SD card not eMMC, the
  kernel will access the eMMC instead of SD card when attempting to mount
  /dev/mmcblk1p3 as the root fs. If eMMC is not partitioned/formatted, the
  kernel will panic since the root fs can't be mounted. If eMMC is partitioned
  and formatted, the kernel will mount an unexpected filesystem as the root fs.

This change relies on the SDHCI driver performing initial card detection
synchronously during device registration. This is currently the case.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NColin Cross <ccross@android.com>

Register the base i2c devices on seaboard. A few more are pending,
but it's a start.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NStephen Warren <swarren@nvidia.com>

This ensures they're kept in sync between platform_data definitions and
the GPIO table initialization.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This adds board support for the Seaboard eval platform and some of the
derivatives that are very similar. Since they only differ in some very
minor ways, most of the code is shared.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NColin Cross <ccross@android.com>