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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 187-20020a4a0dc4000000b00595b35927a3sm938513oob.39.2024.01.10.11.51.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jan 2024 11:51:19 -0800 (PST) From: David Lechner To: Mark Brown , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Frank Rowand Cc: David Lechner , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Jonathan Corbet , linux-spi@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 11/13] dt-bindings: iio: offload: add binding for PWM/DMA triggered buffer Date: Wed, 10 Jan 2024 13:49:52 -0600 Message-ID: <20240109-axi-spi-engine-series-3-v1-11-e42c6a986580@baylibre.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240109-axi-spi-engine-series-3-v1-0-e42c6a986580@baylibre.com> References: <20240109-axi-spi-engine-series-3-v1-0-e42c6a986580@baylibre.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mailer: b4 0.12.4 This adds a new binding for a PWM trigger and DMA data output connected to an SPI controller offload instance. Signed-off-by: David Lechner --- .../adi,spi-offload-pwm-trigger-dma-buffer.yaml | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml b/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml new file mode 100644 index 000000000000..748cfab19eff --- /dev/null +++ b/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SPI Offload with PWM Trigger and DMA Buffer Data Output + +maintainers: + - Michael Hennerich + - Nuno Sá + +description: | + This binding describes the connection of a PWM device to the trigger input + and a DMA channel to the output data stream of a SPI Offload instance. + + https://wiki.analog.com/resources/fpga/peripherals/spi_engine/offload + https://wiki.analog.com/resources/fpga/peripherals/spi_engine/tutorial + +$ref: /schemas/spi/adi,axi-spi-engine.yaml#/$defs/offload + +properties: + compatible: + const: adi,spi-offload-pwm-trigger-dma-buffer + + reg: + maxItems: 1 + + pwms: + maxItems: 1 + + dmas: + maxItems: 1 + +required: + - compatible + - pwms + - dmas + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + offloads { + #address-cells = <1>; + #size-cells = <0>; + + offload@0 { + compatible = "adi,spi-offload-pwm-trigger-dma-buffer"; + reg = <0>; + pwms = <&pwm 0>; + dmas = <&dma 0>; + }; + }; + };