From patchwork Fri Sep 20 08:24:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoniu Miclaus X-Patchwork-Id: 13808290 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88B817FBA2; Fri, 20 Sep 2024 08:28:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726820926; cv=none; b=Cf0yemZKf9XkT6cCVRepIUsVsQffZ4gz5AYpooCt3pXQrWweB2ysS376FWGuhAOmesLnrTXzDQGxLBkwQMI/XY+8gQ7lSXkaGWErPj0TxNM3WOO5nB1pTli03N82CJFJjCkOTY1htkOXqrD8ix19qhDngd7nFmdDAlK2cG9VSRE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726820926; c=relaxed/simple; bh=2R1Ih8SXvEFDRHrl2dzmGr32CbJTfUkNx9k6fUfJRmA=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=YhUE+BsGvqTLzWh/v1IFb+waE4KipvR8+tXXrEE4+W3xUSZCBo9nMxJ21yJ1CjIRPIxnJjzwp4htTAq9fTquhQm6HqGT5b5zSMCrAGvAUTVCp5BSV9zk57lBf4gog9rs1FDiP1b0ltNDuVpLKMZ7YSH0BxjkzO8ebmrQpN35ZKk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b=KnmMVOGi; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b="KnmMVOGi" Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48K6V0u1028371; Fri, 20 Sep 2024 04:28:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.com; h=cc :content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=DKIM; bh=o4KZcGa/zx5jVyvObTkpQwQSE59 FbIkwVSL6FKx99h8=; b=KnmMVOGi3NHSjBrgJoMN0fWLgH2Vanj1Gu66ZBealoI rmfibrQUzJD8LGwOSwTDOluhmFwljQgvAOCZx/AJZzIK0vbNuiHcxadzAMGCAtsA 03qS1Sa0dqmzbhXf39ZveZnJ1mNoWTfyfTZO8RQ82XZ1FAOS4k3YzrHuzuLjTEdu 2ZrHsvxaOnWWqcZ1kWbjNWcpnrxw8NbHZRcd0VHjedMJTjgMNSwrue34OX2Z6dqq C3yKX5oiYQTcl4+PllOsB7jgQbSH4rYVGYGZtz9RywOCIF8RrQXziv8rG/GJa2HW cCPPWNsf8sxqo6mCzvktA7oewKCqWwu79w0nb5titpw== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 41n4c5jcsc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2024 04:28:29 -0400 (EDT) Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 48K8SSCm050502 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 20 Sep 2024 04:28:28 -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; Fri, 20 Sep 2024 04:28:28 -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; Fri, 20 Sep 2024 04:28:27 -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; Fri, 20 Sep 2024 04:28:27 -0400 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.165]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 48K8SHAP025925; Fri, 20 Sep 2024 04:28:19 -0400 From: Antoniu Miclaus To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Hennerich , "Mark Brown" , Antoniu Miclaus , , , , CC: Krzysztof Kozlowski Subject: [PATCH v5 1/2] dt-bindings: touchscreen: add ad7877 support Date: Fri, 20 Sep 2024 11:24:43 +0300 Message-ID: <20240920082520.10094-1-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.46.0 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-GUID: E6QAhWFJWQ_zsBl-fP3DwGEB1q845SMo X-Proofpoint-ORIG-GUID: E6QAhWFJWQ_zsBl-fP3DwGEB1q845SMo 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 lowpriorityscore=0 bulkscore=0 clxscore=1011 mlxlogscore=999 priorityscore=1501 spamscore=0 impostorscore=0 phishscore=0 malwarescore=0 adultscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409200059 Add device tree bindings for ad7877. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Antoniu Miclaus --- changes in v5: - add missing defaults for first-conv-delay-ns and stopacq-polarity .../input/touchscreen/adi,ad7877.yaml | 108 ++++++++++++++++++ 1 file changed, 108 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..be737cfbe471 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml @@ -0,0 +1,108 @@ +# 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. + $ref: /schemas/types.yaml#/definitions/string + enum: [low, high] + default: low + + adi,first-conv-delay-ns: + description: Delay in ns before the first conversion. + enum: [500, 128000, 1000000, 8000000] + default: 500 + + adi,pen-down-acc-interval-us: + description: Enable the ADC to repeatedly perform conversions. + enum: [0, 500, 1000, 8000] + default: 0 + + adi,acquisition-time-us: + description: Select acquisition times in us for the ADC. + enum: [2, 4, 8, 16] + default: 2 + + adi,vref-delay-us: + description: Delay required for the SPI transfers depending on the VREF used. + default: 100 + + touchscreen-average-samples: + enum: [1, 4, 8, 16] + + touchscreen-x-plate-ohms: + default: 400 + + touchscreen-min-x: true + touchscreen-min-y: true + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-max-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>; + adi,vref-delay-us = <100>; + adi,stopacq-polarity = "low"; + adi,first-conv-delay-ns = <500>; + adi,pen-down-acc-interval-us = <0>; + adi,acquisition-time-us = <2>; + touchscreen-average-samples = <16>; + touchscreen-x-plate-ohms = <400>; + touchscreen-min-x = <0>; + touchscreen-min-y = <0>; + touchscreen-size-x = <800>; + touchscreen-size-y = <480>; + touchscreen-max-pressure = <4095>; + }; + }; +...