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dt-bindings: misc: Document reg for aspeed, p2a-ctrl nodes

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The P2A controller node sits under a syscon device, and can assume
offsets from the base of the syscon based on the compatible. However,
for devicetree correctness allow a reg property to be specified, which
an associated driver may choose to use to discover associated resources.

Cc: Patrick Venture <venture@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
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Andrew Jeffery 2019-12-03 22:34:03 +10:30 committed by Joel Stanley
parent 89d6d772f6
commit ce885265ef
1 changed files with 1 additions and 0 deletions
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Documentation/devicetree/bindings/misc/aspeed-p2a-ctrl.txt
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@ -18,6 +18,7 @@ Required properties:
Optional properties: Optional properties:
=================== ===================
- reg: A hint for the memory regions associated with the P2A controller
- memory-region: A phandle to a reserved_memory region to be used for the PCI - memory-region: A phandle to a reserved_memory region to be used for the PCI
to AHB mapping to AHB mapping