From patchwork Fri Sep 6 19:14:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Kumar Savaliya X-Patchwork-Id: 1982057 X-Patchwork-Delegate: andi.shyti@kernel.org Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=quicinc.com header.i=@quicinc.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=naEK9Uob; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45e3:2400::1; helo=sv.mirrors.kernel.org; envelope-from=linux-i2c+bounces-6337-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org [IPv6:2604:1380:45e3:2400::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4X0mC41X2Wz1y1K for ; Sat, 7 Sep 2024 05:15:12 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id CE756282180 for ; Fri, 6 Sep 2024 19:15:10 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D3C631D4611; Fri, 6 Sep 2024 19:14:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="naEK9Uob" X-Original-To: linux-i2c@vger.kernel.org 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 0DD34155C98; Fri, 6 Sep 2024 19:14:54 +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=1725650096; cv=none; b=iXcHvvJ6p373qpVxXXiB/29aSpDZf/yLuiIpMrJa8DC8XShmOjn60q1DdvVnByXc7Q7KnFOAwcUOJOLzZLqiExnMWjjTjGdEqhHi7oj7qtIeVRFT8+EAO9pI0jIPErPr2QlRPQmpGUguup+r2kcZIsaRkNa7EJwGQNXaXPKx+h0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725650096; c=relaxed/simple; bh=UQIoMDZSAZ8ZkFMJMH0rX7tysIg0uHF1yGQghRVrnlQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FbX2YIUpucLFzuLr7cmtrBc0DjhOETZJ/BQdDCI3Gqol59eNUWuVxZ616RwJWPbiJFozVEprDkPwTbsl2sjAmVVMYGL+Eb1ri6SQAYUz0weLM7XWI6A6Wogi7QCDX9SUB8p2rpV0AYpGl6nsr+5KylJxgW8ECOLg4deAUIj3NOk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=naEK9Uob; 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=qualcomm.com Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48694QXs019645; Fri, 6 Sep 2024 19:14:47 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=qcppdkim1; bh=WezLRs6mwYp Bkc/lG8d02YW5Vzlf7wmsqYtCZfTAmfE=; b=naEK9UobFmZee8BpGmBpvuW6oOY k7UMb88tkwlBmA2qprHKAsYr6MvtiXw51T4Vf8mDZ8CNADAvFtukYaTi7mu4qloF RXWrtT6J0wIEhkJryDlxf4Tg5EyCdlmy6I9k8wbdxGQUAxFc89OcDr/a/87f16BK iiRaIhAGBsHy07gutHrX2AfrjU066Qnw9FJX+S40Xg3IlmT4Esto5bxLlqZy8Gan /A8RYF21iJSEjhrDkuuXknBGY2gLVwVupiS7GeG87BINcz27O1/3+v5vkgQfLwsL WlnOXlREvEtmIxcCrhgT/4oQe0nvfgfTD1hc51Jyzr7FtNdhbWSHntViWnQ== Received: from apblrppmta02.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 41fhwu37w2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Sep 2024 19:14:46 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTP id 486JEhZo013069; Fri, 6 Sep 2024 19:14:43 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 41bv8mxy1h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Sep 2024 19:14:43 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 486JEgbr013060; Fri, 6 Sep 2024 19:14:42 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-msavaliy-hyd.qualcomm.com [10.213.110.207]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 486JEgai013059 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Sep 2024 19:14:42 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 429934) id AA3DE24186; Sat, 7 Sep 2024 00:44:41 +0530 (+0530) From: Mukesh Kumar Savaliya To: konrad.dybcio@linaro.org, andersson@kernel.org, andi.shyti@kernel.org, linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, conor+dt@kernel.org, agross@kernel.org, devicetree@vger.kernel.org, vkoul@kernel.org, linux@treblig.org, dan.carpenter@linaro.org, Frank.Li@nxp.com, konradybcio@kernel.org Cc: quic_vdadhani@quicinc.com, Mukesh Kumar Savaliya Subject: [PATCH v2 1/4] dt-bindindgs: i2c: qcom,i2c-geni: Document shared flag Date: Sat, 7 Sep 2024 00:44:35 +0530 Message-Id: <20240906191438.4104329-2-quic_msavaliy@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240906191438.4104329-1-quic_msavaliy@quicinc.com> References: <20240906191438.4104329-1-quic_msavaliy@quicinc.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: sXxg6jZ62EotY6s4uyvpkLZKfr5lCXrx X-Proofpoint-GUID: sXxg6jZ62EotY6s4uyvpkLZKfr5lCXrx 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_04,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 bulkscore=0 adultscore=0 suspectscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 phishscore=0 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409060141 Adds qcom,shared-se flag usage. Use this when particular I2C serial controller needs to be shared between two subsystems. SE = Serial Engine, meant for I2C controller here. TRE = Transfer Ring Element, refers to Queued Descriptor. Example : Two clients from different SS can share an I2C SE for same slave device OR their owned slave devices. Assume I2C Slave EEPROM device connected with I2C controller. Each client from ADSP SS and APPS Linux SS can perform i2c transactions. This gets serialized by lock TRE + DMA Transfers + Unlock TRE at HW level. Signed-off-by: Mukesh Kumar Savaliya --- Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml index 9f66a3bb1f80..ae423127f736 100644 --- a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml @@ -60,6 +60,10 @@ properties: power-domains: maxItems: 1 + qcom,shared-se: + description: True if I2C needs to be shared between two or more subsystems. + type: boolean + reg: maxItems: 1