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dt-bindings: rtc: rzn1: add optional second clock

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The external crystal can be a second clock input. It is needed for the
SCMP counting method which allows using crystals different than 32768Hz.
It is also needed for an upcoming SoC which only supports the SCMP
method.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250526095801.35781-6-wsa+renesas@sang-engineering.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Wolfram Sang 2025-05-26 11:58:02 +02:00 committed by Alexandre Belloni
parent c7622a4e44
commit ae95a7e321
1 changed files with 6 additions and 2 deletions
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8
Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml
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@ -33,10 +33,14 @@ properties:
- const: pps
clocks:
maxItems: 1
minItems: 1
maxItems: 2
clock-names:
const: hclk
minItems: 1
items:
- const: hclk
- const: xtal
power-domains:
maxItems: 1