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[1/3] dt-bindings: rtc: rzn1: add optional second clock

Message ID 20250319110305.19687-2-wsa+renesas@sang-engineering.com (mailing list archive)
State New
Delegated to: Geert Uytterhoeven
Headers show
Series rtc: rzn1: support XTAL clk and SCMP method | expand

Commit Message

Wolfram Sang March 19, 2025, 11:03 a.m. UTC 
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>
---
 .../devicetree/bindings/rtc/renesas,rzn1-rtc.yaml         | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml b/Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml
index f6e0c613af67..f6fdcc7090b6 100644
--- a/Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml
@@ -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