From patchwork Wed Feb 12 18:16:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Santos X-Patchwork-Id: 13972277 Received: from mx0b-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 33B96260A4F; Wed, 12 Feb 2025 18:16:48 +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=1739384210; cv=none; b=sJcffIrI7S7GcBdGbqWBWW4TDbY2AdRAd9+FlwA/eF0b/JU9t62R3+1SXqAWJDM64TtILchMDgHYxtB0Nmu8og/1pcS07TslJ2i/L6yOWM6IIrDGyO94ztTF3rxAMdT49yATT+TaekJFnW13EW/v4FUP7wmxH5awkOVl8qHtsXw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739384210; c=relaxed/simple; bh=cUdo0hR1SxFvHRflLbtijd5qk5QC/Bd354r6plb6MyY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uGNHYA4Wv8+/kM6QQwLiiEF1HIU9QUpjk0KTVCRhCkog184WyscZdi/bExatwT5OAthwemPwA6I69C8hfJi0vyMcfEH4iCkq7VRPEFZfqneDm/TouCtILaWB9g+BfrPCLOc9i1XbIkKIkIiHpQbub4vvYZVkk8CqmYw1coLS1yY= 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=FblSIiu6; 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="FblSIiu6" Received: from pps.filterd (m0375855.ppops.net [127.0.0.1]) by mx0b-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 51CFAvC0019256; Wed, 12 Feb 2025 13:16:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=DKIM; bh=sRP87 Qul6HtZYSdW8p/OVdXuHInPi/VjRFG8cNBDNmE=; b=FblSIiu6BMyeD9yzgQabY sAh4ex1el39GXSuOzl5hOiVKYq1Nz4qBF693Pa6nG7t3/RCJxq/EIC6uxPfT4z9s z+aeDJ3TiyoYItvZQZs3fGnEXBOrrAuyP8CD0e2ESWmIxu8cjGbXvj6Fo7FA5ZtX tg5FnY1gNODmP6xarqI4lVUJ9qXscB6+ONcOLSlQwgR+sTZKU4q7wQgzQzOYIwiB XohPEsYtXz8UQlZWnMBVnHGXVuBIayblKVfFNcsYaO5c9E/kBMZMkTeGVMnngQkJ DnQ2mFOQFaaA4zr1IP1CrAAP3dg4WjSi+SuSuwWwamNQsWAEd59XpnL1hzwp326u A== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 44rs9aa4gu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 12 Feb 2025 13:16:34 -0500 (EST) 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 51CIGWSJ041114 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 12 Feb 2025 13:16:32 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) 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; Wed, 12 Feb 2025 13:16:32 -0500 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; Wed, 12 Feb 2025 13:16:32 -0500 Received: from JSANTO12-L01.ad.analog.com ([10.65.60.206]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 51CIGGeo017453; Wed, 12 Feb 2025 13:16:19 -0500 From: Jonathan Santos To: , , CC: Jonathan Santos , , , , , , , , , , Subject: [PATCH RESEND v3 03/17] dt-bindings: iio: adc: ad7768-1: add trigger-sources property Date: Wed, 12 Feb 2025 15:16:16 -0300 Message-ID: <4136b5259df75221fc314bcd4a57ecaeeab41a45.1739368121.git.Jonathan.Santos@analog.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: 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: vSTJySN6VMulKdrWh5ZDPsNl3W9Hc4o0 X-Authority-Analysis: v=2.4 cv=ZdznNtVA c=1 sm=1 tr=0 ts=67ace582 cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=T2h4t0Lz3GQA:10 a=gAnH3GRIAAAA:8 a=1BXouof-NqooHmoyBnsA:9 a=ll8Ng6K2x5dEghGH17xW:22 a=oVHKYsEdi7-vN-J5QA_j:22 X-Proofpoint-ORIG-GUID: vSTJySN6VMulKdrWh5ZDPsNl3W9Hc4o0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-12_05,2025-02-11_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 suspectscore=0 mlxscore=0 clxscore=1015 impostorscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502120132 In addition to GPIO synchronization, The AD7768-1 also supports synchronization over SPI, which use is recommended when the GPIO cannot provide a pulse synchronous with the base MCLK signal. It consists of looping back the SYNC_OUT to the SYNC_IN pin and send a command via SPI to trigger the synchronization. Add a new trigger-sources property to enable synchronization over SPI and future multiple devices support. This property references the main device (or trigger provider) responsible for generating the SYNC_OUT pulse to drive the SYNC_IN of device. While at it, add description to the interrupts property. Signed-off-by: Jonathan Santos --- v3 Changes: * Fixed dt-bindings errors. * Trigger-source is set as an alternative to sync-in-gpios, so we don't break the previous ABI. * increased maxItems from trigger-sources to 2. v2 Changes: * Patch added as replacement for adi,sync-in-spi patch. * addressed the request for a description to interrupts property. --- .../bindings/iio/adc/adi,ad7768-1.yaml | 28 +++++++++++++++++-- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml index 3ce59d4d065f..4bcc9e20fab9 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml @@ -26,7 +26,19 @@ properties: clock-names: const: mclk + trigger-sources: + description: + Specifies the device responsible for driving the synchronization pin, + as an alternative to adi,sync-in-gpios. If the own device node is + referenced, The synchronization over SPI is enabled and the SYNC_OUT + output will drive the SYNC_IN pin. + maxItems: 2 + interrupts: + description: + Specifies the interrupt line associated with the ADC. This refers + to the DRDY (Data Ready) pin, which signals when conversion results are + available. maxItems: 1 '#address-cells': @@ -57,6 +69,9 @@ properties: "#io-channel-cells": const: 1 + "#trigger-source-cells": + const: 0 + required: - compatible - reg @@ -65,7 +80,6 @@ required: - vref-supply - spi-cpol - spi-cpha - - adi,sync-in-gpios patternProperties: "^channel@([0-9]|1[0-5])$": @@ -89,6 +103,13 @@ patternProperties: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# + - oneOf: + - required: + - trigger-sources + - "#trigger-source-cells" + - required: + - adi,sync-in-gpios + unevaluatedProperties: false examples: @@ -99,7 +120,7 @@ examples: #address-cells = <1>; #size-cells = <0>; - adc@0 { + adc0: adc@0 { compatible = "adi,ad7768-1"; reg = <0>; spi-max-frequency = <2000000>; @@ -108,7 +129,8 @@ examples: vref-supply = <&adc_vref>; interrupts = <25 IRQ_TYPE_EDGE_RISING>; interrupt-parent = <&gpio>; - adi,sync-in-gpios = <&gpio 22 GPIO_ACTIVE_LOW>; + trigger-sources = <&adc0 0>; + #trigger-source-cells = <0>; reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; clocks = <&ad7768_mclk>; clock-names = "mclk";