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Mon, 2 Sep 2024 04:28:11 -0400 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) 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; Mon, 2 Sep 2024 04:28:10 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 2 Sep 2024 04:28:10 -0400 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.139]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 4828R9oS014033; Mon, 2 Sep 2024 04:28:01 -0400 From: Antoniu Miclaus To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Hennerich , Antoniu Miclaus , , , Subject: [PATCH v2 3/3] dt-bindings: touchscreen: ad7877: add bindings Date: Mon, 2 Sep 2024 11:24:33 +0300 Message-ID: <20240902082707.4325-3-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240902082707.4325-1-antoniu.miclaus@analog.com> References: <20240902082707.4325-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: 1_ey-6oR9a9f6QrL3vaxWP3feygB1g7M X-Proofpoint-GUID: 1_ey-6oR9a9f6QrL3vaxWP3feygB1g7M X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-09-02_01,2024-08-30_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 adultscore=0 malwarescore=0 suspectscore=0 mlxscore=0 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2409020069 Add device tree bindings for the ad7877 driver. Signed-off-by: Antoniu Miclaus --- changes in v2: - add only the used properties from touchscreen.yaml - add vendor properties. - update dt example. .../input/touchscreen/adi,ad7877.yaml | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml diff --git a/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml new file mode 100644 index 000000000000..035e2d5bbcb8 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/adi,ad7877.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7877 Touch Screen Controller + +maintainers: + - Antoniu Miclaus + +description: | + Analog Devices Touch Screen Controller + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7877.pdf + +allOf: + - $ref: touchscreen.yaml# + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - adi,ad7877 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + spi-max-frequency: + description: AD7877 SPI bus clock frequency. + minimum: 10000 + maximum: 20000000 + + adi,stopacq-polarity: + description: The polarity of the signal applied to the STOPACQ pin. + 0 = active low + 1 = active high + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1] + + adi,first-conv-delay: + description: Delay before the first conversion. + 0 = 0.5us + 1 = 128us + 2 = 1ms + 3 = 8ms + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + + adi,pen-down-acc-interval: + description: Enable the ADC to repeatedly perform conversions. + 0 = covert once + 1 = every 0.5 ms + 2 = every 1 ms + 3 = every 8 ms + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + + adi,acquisition-time: + description: Select acquisition times for the ADC. + 0 = 2us + 1 = 4us + 2 = 8us + 3 = 16us + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + + adi,vref-delay-usecs: + description: Delay required for the SPI transfers depending on the VREF used. + $ref: /schemas/types.yaml#/definitions/uint16 + + touchscreen-average-samples: + enum: [1, 4, 8, 16] + + touchscreen-x-plate-ohms: true + touchscreen-y-plate-ohms: true + touchscreen-min-x: true + touchscreen-min-y: true + touchscreen-max-x: true + touchscreen-max-y: true + touchscreen-max-pressure: true + touchscreen-min-pressure: true + +required: + - compatible + - reg + - interrupts + - touchscreen-average-samples + +additionalProperties: false + +examples: + - | + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@0 { + compatible = "adi,ad7877"; + reg = <0>; + spi-max-frequency = <20000000>; + interrupts = <21 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + touchscreen-average-samples = <16>; + }; + }; +...