[U-Boot] [PATCH v2 8/9] cmd: fdt: add fdt overlay application subcommand

[Simon Glass]

Hi Maxime,

On 27 May 2016 at 03:13, Maxime Ripard <maxime.ripard at free-electrons.com> wrote:
> The device tree overlays are a good way to deal with user-modifyable

nit: modifiable

> boards or boards with some kind of an expansion mechanism where we can
> easily plug new board in (like the BBB or the raspberry pi).
>
> However, so far, the usual mechanism to deal with it was to have in Linux
> some driver detecting the expansion boards plugged in and then request
> these overlays using the firmware interface.
>
> That works in most cases, but in some cases, you might want to have the
> overlays applied before the userspace comes in. Either because the new
> board requires some kind of an early initialization, or because your root
> filesystem is accessed through that expansion board.
>
> The easiest solution in such a case is to simply have the component before
> Linux applying that overlay, removing all these drawbacks.
>
> Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
> ---
>  cmd/fdt.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)

Acked-by: Simon Glass <sjg at chromium.org>