| Message ID | 20250409192213.1130181-2-elder@riscstar.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | serial: 8250_of: support an optional bus clock | expand |
On Wed, 09 Apr 2025 14:22:11 -0500, Alex Elder wrote: > 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(-) > Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
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:
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(-)