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Mon, 14 Oct 2024 10:32:43 -0400 Received: from ASHBCASHYB4.ad.analog.com (10.64.17.132) by ASHBMBX9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 14 Oct 2024 10:32:43 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBCASHYB4.ad.analog.com (10.64.17.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 14 Oct 2024 10:32:43 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 14 Oct 2024 10:32:43 -0400 Received: from HYB-hYN1yfF7zRm.ad.analog.com (HYB-hYN1yfF7zRm.ad.analog.com [10.48.65.186]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 49EEW6bB014258; Mon, 14 Oct 2024 10:32:38 -0400 From: Ramona Alexandra Nechita To: Jonathan Cameron , Lars-Peter Clausen , Cosmin Tanislav , Michael Hennerich , Alexandru Ardelean , Rob Herring , "Krzysztof Kozlowski" , Nuno Sa , David Lechner , Ana-Maria Cusco , George Mois , "Ramona Alexandra Nechita" , , , Subject: [PATCH v7 1/3] dt-bindings: iio: adc: add a7779 doc Date: Mon, 14 Oct 2024 17:31:58 +0300 Message-ID: <20241014143204.30195-2-ramona.nechita@analog.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241014143204.30195-1-ramona.nechita@analog.com> References: <20241014143204.30195-1-ramona.nechita@analog.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: SzVkzzuaD6a8lcRv51O6KD3xB5M9TF-4 X-Proofpoint-ORIG-GUID: SzVkzzuaD6a8lcRv51O6KD3xB5M9TF-4 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 adultscore=0 bulkscore=0 suspectscore=0 clxscore=1015 malwarescore=0 impostorscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410140106 Add dt bindings for AD7779 8-channel, simultaneous sampling ADC family with eight full Σ-Δ ADCs on chip and ultra-low input current to allow direct sensor connection. Signed-off-by: Ramona Alexandra Nechita --- .../bindings/iio/adc/adi,ad7779.yaml | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml new file mode 100644 index 000000000000..044f92f39cfa --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7779.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD777X family 8-Channel, 24-Bit, Simultaneous Sampling ADCs + +maintainers: + - Ramona Nechita + +description: | + The AD777X family consist of 8-channel, simultaneous sampling analog-to- + digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The + AD7771 provides an ultralow input current to allow direct sensor + connection. Each input channel has a programmable gain stage + allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor + outputs into the full-scale ADC input range, maximizing the + dynamic range of the signal chain. + + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7770.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7771.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7779.pdf + +$ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - adi,ad7770 + - adi,ad7771 + - adi,ad7779 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + clocks: + maxItems: 1 + + avdd1-supply: + description: Front-End analog supply AVDD1. Can be used as conversion ref. + + avdd2-supply: + description: AVDD2 Analog Supply from 2.2 V to 3.6 V. + + avdd4-supply: + description: AVDD4 SAR Analog Supply and Reference Source. + + interrupts: + minItems: 1 + items: + - description: | + adc_rdy: Interrupt line for DRDY signal which indicates the end of + conversion independently of the interface selected to read back the + Σ-∆ conversion. + - description: | + Alert: The chip includes self diagnostic features to guarantee the + correct operation. If an error is detected, the ALERT pin is pulled + high to generate an external interruption to the controller. + + interrupt-names: + minItems: 1 + maxItems: 2 + items: + enum: + - adc_rdy + - alert + + start-gpios: + description: + Pin that controls start synchronization pulse. + maxItems: 1 + + reset-gpios: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - interrupts + +unevaluatedProperties: false + +examples: + - | + #include + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7779"; + reg = <0>; + start-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio0 93 GPIO_ACTIVE_LOW>; + interrupt-parent = <&intc>; + interrupts = <0 56 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "adc_rdy"; + clocks = <&adc_clk>; + }; + }; +...