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dt: serial: Add Renesas RZ/N1 binding documentation

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The RZ/N1 UART is a modified Synopsys DesignWare UART.
The modifications only relate to DMA so you could actually use the
controller with the Synopsys compatible string if you are not using
DMA, but you should not do so.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Phil Edworthy 2018-07-13 10:33:48 +01:00 committed by Greg Kroah-Hartman
parent 1481ecf194
commit 72b0505f08
1 changed files with 10 additions and 0 deletions
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Documentation/devicetree/bindings/serial/renesas,rzn1-uart.txt Normal file
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Renesas RZ/N1 UART
This controller is based on the Synopsys DesignWare ABP UART and inherits all
properties defined in snps-dw-apb-uart.txt except for the compatible property.
Required properties:
- compatible : The device specific string followed by the generic RZ/N1 string.
Therefore it must be one of:
"renesas,r9a06g032-uart", "renesas,rzn1-uart"
"renesas,r9a06g033-uart", "renesas,rzn1-uart"