From patchwork Fri Jan 26 16:41:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 13532885 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 ACD781DFD8; Fri, 26 Jan 2024 16:41:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706287313; cv=none; b=SGGAaOwPQ6cDoNntrK2iqRRtPpmeZxoyZ/+lNUVixoc3ISHl1L02v4AD8nvhw0q9UAZbAlDfINsPsXIETM6qjCgOvVYMSL8XxIxSpqFhl3XCADZVOzNysagTEcT4dxDFSChQu6fu14/uLHRd9tnBTQInixjPoqvj8j996BgYCCw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706287313; c=relaxed/simple; bh=TTMMcaKwbtVMWjq2FvU5baWtMNXCodc6+U2gPgL4xKE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=t8jGt4oXlSWU6uKTFxaUbYW+qV1o8bKmKddGfX+RKSfj9LaBEgADzrCqP0H/g2p2yjSpeKsJmmY62WvvOsWkduxEvUFKGygfcdDw82kH5/62wDHUVvORQJtM6vWVX9zzNGjpg8FY1vecbmhaN5pW4kBYbJH3Hk1AIT3mjjZkTzI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=OZsNkRYG; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="OZsNkRYG" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40QGMoia019863; Fri, 26 Jan 2024 16:41:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:date:subject:mime-version:content-type :content-transfer-encoding:message-id:references:in-reply-to:to :cc; s=qcppdkim1; bh=G1FEGn3O/VBptqGwJi6KCObyTHs9nhdvsW5xpkdLjlc =; b=OZsNkRYGex6DscoehRbZbhkJN+pEXAlQ5+61lS3+WNgNKDt1m+xTSGGaPNx dKKRlrGzQV8BCQPtdRqE0d+KQa6+bfoT81WGis+8Wbhf0+s7ALTyx7aJt64luEfX AGKDYkSJWB+rjBZ4LGaTad1zYzFtujFNDDGN1vXm9r9NRKTgwgdhTXlzBeVKCdXn CYzIXSjKIlLawkxy9HIFlWVBwhG9jnKxOMDrzdnknG6lJtgi64SpmGVsocSfXGXX hjNEsa/I5uBKMb/2EVarK7mtGOYsPRCIA0hUAi3Xe4ceToZp9reQIoVdvLmi4xTQ FiXc0EBSwKP63Ec8DhIR3CbI/Gw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vv4casmf3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Jan 2024 16:41:42 +0000 (GMT) Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40QGff8U027458 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Jan 2024 16:41:41 GMT Received: from [169.254.0.1] (10.49.16.6) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Fri, 26 Jan 2024 08:41:40 -0800 From: Bjorn Andersson Date: Fri, 26 Jan 2024 08:41:38 -0800 Subject: [PATCH v2 1/2] dt-bindings: HID: i2c-hid: Document reset-related properties Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20240126-x13s-touchscreen-v2-1-5374ccc9e10d@quicinc.com> References: <20240126-x13s-touchscreen-v2-0-5374ccc9e10d@quicinc.com> In-Reply-To: <20240126-x13s-touchscreen-v2-0-5374ccc9e10d@quicinc.com> To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Benjamin Tissoires , Jiri Kosina , Bjorn Andersson , Konrad Dybcio , Johan Hovold CC: , , , , Konrad Dybcio , Krzysztof Kozlowski , Bjorn Andersson X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1706287300; l=1255; i=quic_bjorande@quicinc.com; s=20230915; h=from:subject:message-id; bh=TTMMcaKwbtVMWjq2FvU5baWtMNXCodc6+U2gPgL4xKE=; b=XjVsszoTJAZdc5gBdXDriFtFKdcPpJvmABvBQVLmB/Xh5B5tn5Du1mOmRJSqe2qvDHSClnKnH 67Y136a56eLCWyPZJNZvuFAJpXpA01hGG5H/9FDy8PrpRtn3bQZ2gds X-Developer-Key: i=quic_bjorande@quicinc.com; a=ed25519; pk=VkhObtljigy9k0ZUIE1Mvr0Y+E1dgBEH9WoLQnUtbIM= X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 5k1kVPu0KJSDlyv4oHEIQzWfVZWZKgxI X-Proofpoint-GUID: 5k1kVPu0KJSDlyv4oHEIQzWfVZWZKgxI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-25_14,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1015 bulkscore=0 impostorscore=0 priorityscore=1501 spamscore=0 suspectscore=0 mlxlogscore=999 phishscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401190000 definitions=main-2401260123 Some I2C HID devices has a reset pin and requires that some specified time elapses after this reset pin is deasserted, before communication with the device is attempted. The Linux implementation is looking for these in the "reset-gpios" and "post-reset-deassert-delay-ms" properties already, so use these property names. Signed-off-by: Bjorn Andersson Reviewed-by: Johan Hovold --- Documentation/devicetree/bindings/input/hid-over-i2c.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml index 138caad96a29..f07ff4cb3d26 100644 --- a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml +++ b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml @@ -50,6 +50,12 @@ properties: description: Time required by the device after enabling its regulators or powering it on, before it is ready for communication. + post-reset-deassert-delay-ms: + description: Time required by the device after reset has been deasserted, + before it is ready for communication. + + reset-gpios: true + touchscreen-inverted-x: true touchscreen-inverted-y: true