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dt-bindings: watchdog: renesas-wdt: Add R-Car Gen2 support

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This commit documents the compatibility with R-Car Gen2 and RZ/G
devices by defining the generic compatible string "renesas,rcar-gen2-wdt".
Also, this patch expands the list of SoC-specific compatible strings to
include RZ/G and R-Car Gen2 devices.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Fabrizio Castro 2018-02-12 17:44:20 +00:00 • committed by Wim Van Sebroeck
commit 1c85ffc86a
1 changed files with 15 additions and 7 deletions
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22
Documentation/devicetree/bindings/watchdog/renesas-wdt.txt
View file

@ -1,19 +1,27 @@
Renesas Watchdog Timer (WDT) Controller
Required properties:
- compatible : Should be "renesas,<soctype>-wdt", and
"renesas,rcar-gen3-wdt" or "renesas,rza-wdt" as fallback.
- compatible : Must be "renesas,<soctype>-wdt", followed by a generic
fallback compatible string when compatible with the generic
version.
Examples with soctypes are:
- "renesas,r7s72100-wdt" (RZ/A1)
- "renesas,r8a7743-wdt" (RZ/G1M)
- "renesas,r8a7745-wdt" (RZ/G1E)
- "renesas,r8a7790-wdt" (R-Car H2)
- "renesas,r8a7791-wdt" (R-Car M2-W)
- "renesas,r8a7792-wdt" (R-Car V2H)
- "renesas,r8a7793-wdt" (R-Car M2-N)
- "renesas,r8a7794-wdt" (R-Car E2)
- "renesas,r8a7795-wdt" (R-Car H3)
- "renesas,r8a7796-wdt" (R-Car M3-W)
- "renesas,r8a77965-wdt" (R-Car M3-N)
- "renesas,r8a77970-wdt" (R-Car V3M)
- "renesas,r8a77995-wdt" (R-Car D3)
When compatible with the generic version, nodes must list the SoC-specific
version corresponding to the platform first, followed by the generic
version.
- "renesas,r7s72100-wdt" (RZ/A1)
The generic compatible string must be:
- "renesas,rza-wdt" for RZ/A
- "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G
- "renesas,rcar-gen3-wdt" for R-Car Gen3
- reg : Should contain WDT registers location and length
- clocks : the clock feeding the watchdog timer.