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Signed-off-by: Manuel Traut --- .../devicetree/bindings/input/pwm-beeper.txt | 24 ---------- .../devicetree/bindings/input/pwm-beeper.yaml | 48 +++++++++++++++++++ 2 files changed, 48 insertions(+), 24 deletions(-) delete mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.txt create mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.yaml diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt b/Documentation/devicetree/bindings/input/pwm-beeper.txt deleted file mode 100644 index 8fc0e48c20db..000000000000 --- a/Documentation/devicetree/bindings/input/pwm-beeper.txt +++ /dev/null @@ -1,24 +0,0 @@ -* PWM beeper device tree bindings - -Registers a PWM device as beeper. - -Required properties: -- compatible: should be "pwm-beeper" -- pwms: phandle to the physical PWM device - -Optional properties: -- amp-supply: phandle to a regulator that acts as an amplifier for the beeper -- beeper-hz: bell frequency in Hz - -Example: - -beeper_amp: amplifier { - compatible = "fixed-regulator"; - gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>; -}; - -beeper { - compatible = "pwm-beeper"; - pwms = <&pwm0>; - amp-supply = <&beeper_amp>; -}; diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.yaml b/Documentation/devicetree/bindings/input/pwm-beeper.yaml new file mode 100644 index 000000000000..351df83d5cbe --- /dev/null +++ b/Documentation/devicetree/bindings/input/pwm-beeper.yaml @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/input/pwm-beeper.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: PWM beeper + +maintainers: + - Dmitry Torokhov + +description: Registers a PWM device as beeper. + +properties: + compatible: + const: pwm-beeper + + pwms: + maxItems: 1 + + amp-supply: + description: > + phandle to a regulator that acts as an amplifier for + the beeper + + beeper-hz: + description: bell frequency in Hz + +required: + - compatible + - pwms + +additionalProperties: false + +examples: + - | + #include + + beeper_amp: amplifier { + compatible = "fixed-regulator"; + gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>; + }; + + beeper { + compatible = "pwm-beeper"; + pwms = <&pwm0>; + amp-supply = <&beeper_amp>; + }; From patchwork Thu Jan 26 09:18:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manuel Traut X-Patchwork-Id: 1732073 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=mt.com header.i=@mt.com header.a=rsa-sha256 header.s=selector2 header.b=wGPSQ7PV; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2ZsY5kFNz23h0 for ; 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Signed-off-by: Manuel Traut --- .../devicetree/bindings/input/pwm-beeper.yaml | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.yaml b/Documentation/devicetree/bindings/input/pwm-beeper.yaml index 351df83d5cbe..f1f9283ca855 100644 --- a/Documentation/devicetree/bindings/input/pwm-beeper.yaml +++ b/Documentation/devicetree/bindings/input/pwm-beeper.yaml @@ -26,6 +26,24 @@ properties: beeper-hz: description: bell frequency in Hz + volume-levels: + description: > + Array of PWM duty cycle values that correspond to + linear volume levels. These need to be in the range of + 0 to 500, while 0 means 0% duty cycle (mute) and 500 + means 50% duty cycle (max volume). + Please note that the actual volume of most beepers is + highly non-linear, which means that low volume levels + are probably somewhere in the range of 1 to 30 (0.1-3% + duty cycle). + $ref: /schemas/types.yaml#/definitions/uint32-array + + default-volume-level: + description: > + The default volume level (index into the array defined + by the "volume-levels" property). + $ref: /schemas/types.yaml#/definitions/uint32 + required: - compatible - pwms @@ -45,4 +63,6 @@ examples: compatible = "pwm-beeper"; pwms = <&pwm0>; amp-supply = <&beeper_amp>; + volume-levels = <0 8 20 40 500>; + default-volume-level = <4>; };