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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-5fc544b08d4sm930387eaf.2.2025.02.07.12.09.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Feb 2025 12:09:27 -0800 (PST) From: David Lechner Date: Fri, 07 Feb 2025 14:09:00 -0600 Subject: [PATCH v8 03/17] dt-bindings: trigger-source: add generic PWM trigger source Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250207-dlech-mainline-spi-engine-offload-2-v8-3-e48a489be48c@baylibre.com> References: <20250207-dlech-mainline-spi-engine-offload-2-v8-0-e48a489be48c@baylibre.com> In-Reply-To: <20250207-dlech-mainline-spi-engine-offload-2-v8-0-e48a489be48c@baylibre.com> To: Mark Brown , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Nuno_S=C3=A1?= Cc: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Michael Hennerich , Lars-Peter Clausen , David Jander , Martin Sperl , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Jonathan Cameron , David Lechner X-Mailer: b4 0.14.2 Add a new binding for using a PWM signal as a trigger source. The idea here is similar to e.g. "pwm-clock" to allow a trigger source consumer to use a PWM provider as a trigger source. Reviewed-by: Jonathan Cameron Reviewed-by: Rob Herring (Arm) Signed-off-by: David Lechner --- v7 changes: none v6 changes: * Moved file from bindings/spi/ to bindings/trigger-source/ * Updated description to not mention SPI * Dropped $ref: /schemas/spi/trigger-source.yaml# * Swapped order in name to be consistent with "pwm-clock" v5 changes: * Add MAINTAINERS entry v4 changes: new patch in v4 --- .../bindings/trigger-source/pwm-trigger.yaml | 37 ++++++++++++++++++++++ MAINTAINERS | 5 +++ 2 files changed, 42 insertions(+) diff --git a/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml b/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml new file mode 100644 index 0000000000000000000000000000000000000000..1eac20031dc3cf921aafb8aa37f4e4eca1075835 --- /dev/null +++ b/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/trigger-source/pwm-trigger.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic trigger source using PWM + +description: Remaps a PWM channel as a trigger source. + +maintainers: + - David Lechner + +properties: + compatible: + const: pwm-trigger + + '#trigger-source-cells': + const: 0 + + pwms: + maxItems: 1 + +required: + - compatible + - '#trigger-source-cells' + - pwms + +additionalProperties: false + +examples: + - | + trigger { + compatible = "pwm-trigger"; + #trigger-source-cells = <0>; + pwms = <&pwm 0 1000000 0>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index c37504e2e19f067b9835a28708dfd1d25700a608..d6ac6cdc6278536b5c4f81ff183588b491798036 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -24103,6 +24103,11 @@ W: https://github.com/srcres258/linux-doc T: git git://github.com/srcres258/linux-doc.git doc-zh-tw F: Documentation/translations/zh_TW/ +TRIGGER SOURCE - PWM +M: David Lechner +S: Maintained +F: Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml + TRUSTED SECURITY MODULE (TSM) ATTESTATION REPORTS M: Dan Williams L: linux-coco@lists.linux.dev