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-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml115
1 files changed, 104 insertions, 11 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
index 527864a4d8..1d71d4f8f3 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
+++ b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
@@ -9,9 +9,6 @@ title: Amlogic PWM
maintainers:
- Heiner Kallweit <hkallweit1@gmail.com>
-allOf:
- - $ref: pwm.yaml#
-
properties:
compatible:
oneOf:
@@ -24,31 +21,40 @@ properties:
- amlogic,meson-g12a-ee-pwm
- amlogic,meson-g12a-ao-pwm-ab
- amlogic,meson-g12a-ao-pwm-cd
- - amlogic,meson-s4-pwm
+ deprecated: true
- items:
- const: amlogic,meson-gx-pwm
- const: amlogic,meson-gxbb-pwm
+ deprecated: true
- items:
- const: amlogic,meson-gx-ao-pwm
- const: amlogic,meson-gxbb-ao-pwm
+ deprecated: true
- items:
- const: amlogic,meson8-pwm
- const: amlogic,meson8b-pwm
+ deprecated: true
+ - enum:
+ - amlogic,meson8-pwm-v2
+ - amlogic,meson-s4-pwm
+ - items:
+ - enum:
+ - amlogic,meson8b-pwm-v2
+ - amlogic,meson-gxbb-pwm-v2
+ - amlogic,meson-axg-pwm-v2
+ - amlogic,meson-g12-pwm-v2
+ - const: amlogic,meson8-pwm-v2
reg:
maxItems: 1
clocks:
minItems: 1
- maxItems: 2
+ maxItems: 4
clock-names:
- oneOf:
- - items:
- - enum: [clkin0, clkin1]
- - items:
- - const: clkin0
- - const: clkin1
+ minItems: 1
+ maxItems: 2
"#pwm-cells":
const: 3
@@ -57,6 +63,79 @@ required:
- compatible
- reg
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - amlogic,meson8-pwm
+ - amlogic,meson8b-pwm
+ - amlogic,meson-gxbb-pwm
+ - amlogic,meson-gxbb-ao-pwm
+ - amlogic,meson-axg-ee-pwm
+ - amlogic,meson-axg-ao-pwm
+ - amlogic,meson-g12a-ee-pwm
+ - amlogic,meson-g12a-ao-pwm-ab
+ - amlogic,meson-g12a-ao-pwm-cd
+ then:
+ # Obsolete historic bindings tied to the driver implementation
+ # The clocks provided here are meant to be matched with the input
+ # known (hard-coded) in the driver and used to select pwm clock
+ # source. Currently, the linux driver ignores this.
+ # This is kept to maintain ABI backward compatibility.
+ properties:
+ clocks:
+ maxItems: 2
+ clock-names:
+ oneOf:
+ - items:
+ - enum: [clkin0, clkin1]
+ - items:
+ - const: clkin0
+ - const: clkin1
+
+ # Newer binding where clock describe the actual clock inputs of the pwm
+ # block. These are necessary but some inputs may be grounded.
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - amlogic,meson8-pwm-v2
+ then:
+ properties:
+ clocks:
+ minItems: 1
+ items:
+ - description: input clock 0 of the pwm block
+ - description: input clock 1 of the pwm block
+ - description: input clock 2 of the pwm block
+ - description: input clock 3 of the pwm block
+ clock-names: false
+ required:
+ - clocks
+
+ # Newer IP block take a single input per channel, instead of 4 inputs
+ # for both channels
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - amlogic,meson-s4-pwm
+ then:
+ properties:
+ clocks:
+ items:
+ - description: input clock of PWM channel A
+ - description: input clock of PWM channel B
+ clock-names: false
+ required:
+ - clocks
+
additionalProperties: false
examples:
@@ -68,3 +147,17 @@ examples:
clock-names = "clkin0", "clkin1";
#pwm-cells = <3>;
};
+ - |
+ pwm@2000 {
+ compatible = "amlogic,meson8-pwm-v2";
+ reg = <0x1000 0x10>;
+ clocks = <&xtal>, <0>, <&fdiv4>, <&fdiv5>;
+ #pwm-cells = <3>;
+ };
+ - |
+ pwm@1000 {
+ compatible = "amlogic,meson-s4-pwm";
+ reg = <0x1000 0x10>;
+ clocks = <&pwm_src_a>, <&pwm_src_b>;
+ #pwm-cells = <3>;
+ };