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Fri, 26 Jan 2024 03:55:18 +0000 (GMT) Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40Q3tHbM005315 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Jan 2024 03:55:17 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; Thu, 25 Jan 2024 19:55:17 -0800 From: Bjorn Andersson Date: Thu, 25 Jan 2024 19:55:13 -0800 Subject: [PATCH 1/2] dt-bindings: HID: i2c-hid: Document reset-related properties Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20240125-x13s-touchscreen-v1-1-ab8c882def9c@quicinc.com> References: <20240125-x13s-touchscreen-v1-0-ab8c882def9c@quicinc.com> In-Reply-To: <20240125-x13s-touchscreen-v1-0-ab8c882def9c@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=1706241316; l=1255; i=quic_bjorande@quicinc.com; s=20230915; h=from:subject:message-id; bh=TTMMcaKwbtVMWjq2FvU5baWtMNXCodc6+U2gPgL4xKE=; b=LNZpsPqbTtp1I8k54ivVB1IxHVgS9ycUtGqd91Hrd/pw4o/pWQF1idhlqk/Ske8JF7RGwhLlr YZVnPnOHQu5BTSAX5vOcVkkfLKlSIrqzBT/Q18UZtVG+G/X+EqGwyVT X-Developer-Key: i=quic_bjorande@quicinc.com; a=ed25519; pk=VkhObtljigy9k0ZUIE1Mvr0Y+E1dgBEH9WoLQnUtbIM= X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) 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: NiPAHmV6-8QIO6bivnjm1JUqKp8iD0v- X-Proofpoint-GUID: NiPAHmV6-8QIO6bivnjm1JUqKp8iD0v- 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 malwarescore=0 clxscore=1015 priorityscore=1501 impostorscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401190000 definitions=main-2401260026 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 --- 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