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Fri, 25 Oct 2024 18:12:04 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49PIC3ib005047 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Oct 2024 18:12:03 GMT Received: from [10.216.38.148] (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 25 Oct 2024 11:11:57 -0700 Message-ID: <7f0987c6-5f44-47c4-ad98-d10700b32383@quicinc.com> Date: Fri, 25 Oct 2024 23:41:53 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 1/5] dt-bindings: dmaengine: qcom: gpi: Add additional arg to dma-cell property To: Krzysztof Kozlowski , Vinod Koul , "Rob Herring" , Krzysztof Kozlowski , "Conor Dooley" , Bjorn Andersson , "Konrad Dybcio" , Andi Shyti , "Sumit Semwal" , =?UTF-8?Q?Christian_K=C3=B6nig?= CC: , , , , , , , , , , References: <20241015120750.21217-1-quic_jseerapu@quicinc.com> <20241015120750.21217-2-quic_jseerapu@quicinc.com> <0c304de2-26c6-49b3-9809-bf1e7619e5b8@kernel.org> Content-Language: en-US From: Jyothi Kumar Seerapu In-Reply-To: <0c304de2-26c6-49b3-9809-bf1e7619e5b8@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: -14JeimTgOlYk4AEPC3DqM1KaMGfH3IS X-Proofpoint-ORIG-GUID: -14JeimTgOlYk4AEPC3DqM1KaMGfH3IS 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 adultscore=0 phishscore=0 mlxlogscore=985 lowpriorityscore=0 malwarescore=0 suspectscore=0 spamscore=0 mlxscore=0 impostorscore=0 clxscore=1011 priorityscore=1501 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410250139 On 10/15/2024 7:01 PM, Krzysztof Kozlowski wrote: > On 15/10/2024 14:07, Jyothi Kumar Seerapu wrote: >> When high performance with multiple i2c messages in a single transfer >> is required, employ Block Event Interrupt (BEI) to trigger interrupts >> after specific messages transfer and the last message transfer, >> thereby reducing interrupts. >> >> For each i2c message transfer, a series of Transfer Request Elements(TREs) >> must be programmed, including config tre for frequency configuration, >> go tre for holding i2c address and dma tre for holding dma buffer address, >> length as per the hardware programming guide. For transfer using BEI, >> multiple I2C messages may necessitate the preparation of config, go, >> and tx DMA TREs. However, a channel TRE size of 64 is often insufficient, >> potentially leading to failures due to inadequate memory space. > Please kindly test the patches before you sent them. Upstream is not a > testing service. Sure, i will take care to test the required patches. > > Best regards, > Krzysztof >