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dt-bindings: can: rcar_canfd: document r8a774c0 support

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Document the support for rcar_canfd on R8A774C0 SoC devices.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Fabrizio Castro 2019-05-09 20:20:22 +01:00 committed by Simon Horman
parent 485dccb48f
commit c908fd0869
1 changed files with 9 additions and 7 deletions
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16
Documentation/devicetree/bindings/net/can/rcar_canfd.txt
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@ -3,7 +3,8 @@ Renesas R-Car CAN FD controller Device Tree Bindings
Required properties:
- compatible: Must contain one or more of the following:
- "renesas,rcar-gen3-canfd" for R-Car Gen3 compatible controller.
- "renesas,rcar-gen3-canfd" for R-Car Gen3 and RZ/G2 compatible controllers.
- "renesas,r8a774c0-canfd" for R8A774C0 (RZ/G2E) compatible controller.
- "renesas,r8a7795-canfd" for R8A7795 (R-Car H3) compatible controller.
- "renesas,r8a7796-canfd" for R8A7796 (R-Car M3-W) compatible controller.
- "renesas,r8a77965-canfd" for R8A77965 (R-Car M3-N) compatible controller.
@ -28,12 +29,13 @@ The name of the child nodes are "channel0" and "channel1" respectively. Each
child node supports the "status" property only, which is used to
enable/disable the respective channel.
Required properties for "renesas,r8a7795-canfd", "renesas,r8a7796-canfd",
"renesas,r8a77965-canfd" and "renesas,r8a77990-canfd" compatible:
In R8A7795, R8A7796, R8A77965 and R8A77990 SoCs, canfd clock is a div6 clock
and can be used by both CAN and CAN FD controller at the same time. It needs
to be scaled to maximum frequency if any of these controllers use it. This is
done using the below properties:
Required properties for "renesas,r8a774c0-canfd", "renesas,r8a7795-canfd",
"renesas,r8a7796-canfd", "renesas,r8a77965-canfd", and "renesas,r8a77990-canfd"
compatible:
In R8A774C0, R8A7795, R8A7796, R8A77965, and R8A77990 SoCs, canfd clock is a
div6 clock and can be used by both CAN and CAN FD controller at the same time.
It needs to be scaled to maximum frequency if any of these controllers use it.
This is done using the below properties:
- assigned-clocks: phandle of canfd clock.
- assigned-clock-rates: maximum frequency of this clock.