Messages in this thread Patch in this message |  | | From | Alex Elder <> | | Subject | [PATCH v2 1/2] dt-bindings: serial: 8250: support an optional second clock | | Date | Wed, 9 Apr 2025 14:22:11 -0500 |
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The SpacemiT UART driver requires a bus clock to be enabled in addition to the primary function clock. Add the option to specify two clocks for an 8250-compatible UART, named "core" and "bus". If both are needed, require them to be named.
Signed-off-by: Alex Elder <elder@riscstar.com> --- v2: Require both clocks to be specified with names for SpacemiT
.../devicetree/bindings/serial/8250.yaml | 30 ++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml index dc0d52920575f..33d2016b65090 100644 --- a/Documentation/devicetree/bindings/serial/8250.yaml +++ b/Documentation/devicetree/bindings/serial/8250.yaml @@ -135,7 +135,16 @@ properties: clock-frequency: true clocks: - maxItems: 1 + minItems: 1 + items: + - description: The core function clock + - description: An optional bus clock + + clock-names: + minItems: 1 + items: + - const: core + - const: bus resets: maxItems: 1 @@ -224,6 +233,25 @@ required: - reg - interrupts +if: + properties: + compatible: + contains: + const: spacemit,k1-uart +then: + required: [clock-names] + properties: + clocks: + minItems: 2 + clock-names: + minItems: 2 +else: + properties: + clocks: + maxItems: 1 + clock-names: + maxItems: 1 + unevaluatedProperties: false examples: -- 2.45.2
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