[PATCH v3] dt-bindings: rcc: Add optional external ethernet RX clock properties

[Marek Vasut <marex@denx.de>]

Describe optional external ethernet RX clock in the DT binding
to fix dtbs_check warnings like:

arch/arm/boot/dts/stm32mp153c-dhcom-drc02.dt.yaml: rcc@50000000: 'assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks', 'clock-names', 'clocks' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Cc: Rob Herring <robh+dt@kernel.org>
To: devicetree@vger.kernel.org
Acked-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
---
V2: Add AB from Gabriel
V3: - Describe the optional clocks and clock names
    - Update commit message
---
 .../devicetree/bindings/clock/st,stm32mp1-rcc.yaml        | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/st,stm32mp1-rcc.yaml b/Documentation/devicetree/bindings/clock/st,stm32mp1-rcc.yaml
index a0ae4867ed27e..7a251264582db 100644
--- a/Documentation/devicetree/bindings/clock/st,stm32mp1-rcc.yaml
+++ b/Documentation/devicetree/bindings/clock/st,stm32mp1-rcc.yaml
@@ -59,6 +59,14 @@ properties:
           - st,stm32mp1-rcc
       - const: syscon
 
+  clocks:
+    description:
+      Specifies the external RX clock for ethernet MAC.
+    maxItems: 1
+
+  clock-names:
+    const: ETH_RX_CLK/ETH_REF_CLK
+
   reg:
     maxItems: 1
 
-- 
2.35.1