On 15/09/16 06:06, Reza Arbab wrote:
> Respect the standard dt "status" property when scanning memory nodes in
> early_init_dt_scan_memory(), so that if the property is present and not
> "okay", no memory will be added.
> The use case at hand is accelerator or device memory, which may be
> unusable until post-boot initialization of the memory link. Such a node
> can be described in the dt as any other, given its status is "disabled".
> Per the device tree specification,
> "disabled"
>       Indicates that the device is not presently operational, but it
>       might become operational in the future (for example, something
>       is not plugged in, or switched off).
> Once such memory is made operational, it can then be hotplugged.
> Signed-off-by: Reza Arbab <ar...@linux.vnet.ibm.com>

Makes sense, so basically a /memory@  with missing status or status = "okay"
are added, others are skipped. No memblocks corresponding to those nodes
are created either.

Balbir Singh

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