[PATCH 1/2] dt-bindings: pwm: marvell,pxa-pwm: Add SpacemiT K3 PWM support

Yixun Lan
2026-04-09T00:45:28Z

The PWM controller in SpacemiT K3 SoC reuse the same IP as previous K1
generation, while the difference is that one additional bus clock is
added.

Signed-off-by: Yixun Lan <dlan@kernel.org>
---
.../devicetree/bindings/pwm/marvell,pxa-pwm.yaml | 53 ++++++++++++++++++++--
1 file changed, 50 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
index 8df327e52810..3427c8ef3945 100644
--- a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
@@ -15,7 +15,9 @@ allOf:
properties:
compatible:
contains:
- const: spacemit,k1-pwm
+ enum:
+ - spacemit,k1-pwm
+ - spacemit,k3-pwm
then:
properties:
"#pwm-cells":
@@ -26,6 +28,38 @@ allOf:
const: 1
description: |
Used for specifying the period length in nanoseconds.
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - spacemit,k3-pwm
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: func
+ - const: bus
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - spacemit,k3-pwm
+ then:
+ required:
+ - clock-names
+ properties:
+ clocks:
+ minItems: 2
+ clock-names:
+ minItems: 2
+ else:
+ properties:
+ clocks:
+ maxItems: 1
+ clock-names:
+ maxItems: 1

properties:
compatible:
@@ -36,7 +70,9 @@ properties:
- marvell,pxa168-pwm
- marvell,pxa910-pwm
- items:
- - const: spacemit,k1-pwm
+ - enum:
+ - spacemit,k1-pwm
+ - spacemit,k3-pwm
- const: marvell,pxa910-pwm

reg:
@@ -47,7 +83,18 @@ properties:
description: Number of cells in a pwm specifier.

clocks:
- maxItems: 1
+ minItems: 1
+ items:
+ - description: The function clock
+ - description: An optional bus clock
+
+ clock-names:
+ minItems: 1
+ maxItems: 2
+ oneOf:
+ - items:
+ - const: func
+ - const: bus

resets:
maxItems: 1

--
2.53.0