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authorSasha Finkelstein <fnkl.kernel@gmail.com>2023-04-03 17:19:19 +0300
committerThierry Reding <thierry.reding@gmail.com>2023-04-06 17:31:36 +0300
commit87a3a3929c710b863c3a288f6b094edc97662858 (patch)
treedf8a23372dcaa41abcca8ff02dbd00f40d1e1112 /Documentation/devicetree/bindings/pwm
parentb16c310115f2084b8826a35b77ef42bab6786d9f (diff)
downloadlinux-87a3a3929c710b863c3a288f6b094edc97662858.tar.xz
dt-bindings: pwm: Add Apple PWM controller
Apple SoCs such as the M1 contain a PWM controller used among other things to control the keyboard backlight. Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Sven Peter <sven@svenpeter.dev> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
-rw-r--r--Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml51
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
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+++ b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/apple,s5l-fpwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple FPWM controller
+
+maintainers:
+ - asahi@lists.linux.dev
+ - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description: PWM controller used for keyboard backlight on ARM Macs
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - apple,t8103-fpwm
+ - apple,t6000-fpwm
+ - apple,t8112-fpwm
+ - const: apple,s5l-fpwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@235044000 {
+ compatible = "apple,t8103-fpwm", "apple,s5l-fpwm";
+ reg = <0x35044000 0x4000>;
+ power-domains = <&ps_fpwm1>;
+ clocks = <&clkref>;
+ #pwm-cells = <2>;
+ };