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Sun, 2 Jun 2024 21:22:54 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Sun, 2 Jun 2024 21:22:53 -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; Sun, 2 Jun 2024 21:22:53 -0400 Received: from kim-VirtualBox.ad.analog.com (KPALLER2-L03.ad.analog.com [10.116.242.67]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 4531MFWS007966; Sun, 2 Jun 2024 21:22:44 -0400 From: Kim Seer Paller To: , , CC: Jonathan Cameron , David Lechner , Lars-Peter Clausen , Liam Girdwood , Mark Brown , Dimitri Fedrau , Krzysztof Kozlowski , Rob Herring , Conor Dooley , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Kim Seer Paller Subject: [PATCH v3 4/5] dt-bindings: iio: dac: Add adi,ltc2672.yaml Date: Mon, 3 Jun 2024 09:21:59 +0800 Message-ID: <20240603012200.16589-5-kimseer.paller@analog.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240603012200.16589-1-kimseer.paller@analog.com> References: <20240603012200.16589-1-kimseer.paller@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: MeKSJHgbh3dqa5dWta5tPhxubvfd68KA X-Proofpoint-ORIG-GUID: MeKSJHgbh3dqa5dWta5tPhxubvfd68KA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-06-02_15,2024-05-30_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 spamscore=0 bulkscore=0 suspectscore=0 phishscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=999 clxscore=1015 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406030010 Add documentation for ltc2672. Reported-by: Rob Herring (Arm) Closes: https://lore.kernel.org/all/171643825573.1037396.2749703571529285460.robh@kernel.org/ Co-developed-by: Michael Hennerich Signed-off-by: Michael Hennerich Signed-off-by: Kim Seer Paller Reviewed-by: Krzysztof Kozlowski --- .../bindings/iio/dac/adi,ltc2672.yaml | 158 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 159 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml new file mode 100644 index 000000000000..d143a9db7010 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ltc2672.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices LTC2672 DAC + +maintainers: + - Michael Hennerich + - Kim Seer Paller + +description: | + Analog Devices LTC2672 5 channel, 16 bit, 300mA DAC + https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2672.pdf + +properties: + compatible: + enum: + - adi,ltc2672 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 50000000 + + vcc-supply: + description: Analog Supply Voltage Input. + + v-neg-supply: + description: Negative Supply Voltage Input. + + vdd0-supply: + description: Positive Supply Voltage Input for DAC OUT0. + + vdd1-supply: + description: Positive Supply Voltage Input for DAC OUT1. + + vdd2-supply: + description: Positive Supply Voltage Input for DAC OUT2. + + vdd3-supply: + description: Positive Supply Voltage Input for DAC OUT3. + + vdd4-supply: + description: Positive Supply Voltage Input for DAC OUT4. + + iovcc-supply: + description: Digital Input/Output Supply Voltage. + + ref-supply: + description: + Reference Input/Output. The voltage at the REF pin sets the full-scale + range of all channels. If not provided the internal reference is used and + also provided on the VREF pin. + + reset-gpios: + description: + Active Low Asynchronous Clear Input. A logic low at this level triggered + input clears the device to the default reset code and output range, which + is zero-scale with the outputs off. The control registers are cleared to + zero. + maxItems: 1 + + adi,rfsadj-ohms: + description: + If FSADJ is tied to VCC, an internal RFSADJ (20 kΩ) is selected, which + results in nominal output ranges. When an external resistor of 19 kΩ to + 41 kΩ can be used instead by connecting the resistor between FSADJ and GND + it controls the scaling of the ranges, and the internal resistor is + automatically disconnected. + minimum: 19000 + maximum: 41000 + default: 20000 + + io-channels: + description: + ADC channel to monitor voltages and currents at the MUX pin. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@[0-4]$": + type: object + additionalProperties: false + + properties: + reg: + description: The channel number representing the DAC output channel. + maximum: 4 + + adi,toggle-mode: + description: + Set the channel as a toggle enabled channel. Toggle operation enables + fast switching of a DAC output between two different DAC codes without + any SPI transaction. + type: boolean + + adi,output-range-microamp: + description: Specify the channel output full scale range. + enum: [3125000, 6250000, 12500000, 25000000, 50000000, 100000000, + 200000000, 300000000] + + required: + - reg + - adi,output-range-microamp + +required: + - compatible + - reg + - spi-max-frequency + - vcc-supply + - iovcc-supply + - v-neg-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + dac@0 { + compatible = "adi,ltc2672"; + reg = <0>; + spi-max-frequency = <10000000>; + + vcc-supply = <&vcc>; + iovcc-supply = <&vcc>; + ref-supply = <&vref>; + v-neg-supply = <&vneg>; + + io-channels = <&adc 0>; + + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + reg = <0>; + adi,toggle-mode; + adi,output-range-microamp = <3125000>; + }; + + channel@1 { + reg = <1>; + adi,output-range-microamp = <6250000>; + }; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index c7a102d7fd6a..ac1e29e26f31 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13070,6 +13070,7 @@ L: linux-iio@vger.kernel.org S: Supported W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml +F: Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml LTC2688 IIO DAC DRIVER M: Nuno Sá