[U-Boot] [PATCH v3 24/29] dm: Add functions to access a device's children

[Simon Glass]

On 23 July 2014 13:55, Simon Glass <sjg at chromium.org> wrote:
> Devices can have childen that can be addressed by a simple index, the
> sequence number or a device tree offset. Add functions to access a child
> in each of these ways.
>
> The index is typically used as a fallback when the sequence number is not
> available. For example we may use a serial UART with sequence number 0 as
> the console, but if no UART has sequence number 0, then we can fall back
> to just using the first UART (index 0).
>
> The device tree offset function is useful for buses, where they want to
> locate one of their children. The device tree can be scanned to find the
> offset of each child, and that offset can then find the device.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>

Applied to dm/master.