From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 168641FC7D4; Tue, 15 Oct 2024 13:31:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728999104; cv=none; b=ae5Nf3d95F1shOGjKQdAKEyP1GS747IJSeazJEgHGAdeWInb5TTvVZCr1liW0ecq7l1wplig/2yB8JjppzqIS8+2tOTYg7diuKU9i0eRBY2ONynH0jl72JVXhUmb7OT8aftQcrzNkPXUCfn15L8cayagMcqYoJWmNSqctWoQYaA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728999104; c=relaxed/simple; bh=7NIIQSocGtey1EN503Hx3XU/J94h8trNw1uqrKWlEC8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VngxhwdP6RJxwLss9hmvA0J2cdijNiK+C8icVJWF+kVPd+XcRPsGnHZ6JDVXy12xWkTSVK5LmF8ytr++tCR1K0KxWy9wTe2JLbgY+ljGTPvcR7502b1M0Ygm3eqT8GJAXSE6lB6SoqhJGBSWyfgkSv5VRZUKOebqTuJQkvXagvc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IcWr2fy2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IcWr2fy2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 38990C4CEC6; Tue, 15 Oct 2024 13:31:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728999103; bh=7NIIQSocGtey1EN503Hx3XU/J94h8trNw1uqrKWlEC8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=IcWr2fy2tjNMgJp0Uel2cHnBAmeSl7DEGRGaeCRrFHdke0K3Wh4WO6cZ18xpOPrN4 RNO0X5dGTiY08ixs5LMQwSzeO4EIOZvo87A6Jo4fDnxIJKiz1BnKc8c0tetHAYunr7 em0cAVwWPQMr3Gx2qEoXkJ9tc4DVJVfTGGd54n/sDbYMmw9P/PuDfXTytdLaGDG3yD AjSLmEaoTO8Y068OllqtDnbZcKOCNSWHrxHdPMXtkVfgUOSbGdagN0zxd5Gpalbsr+ IAxqkaqXlhcGcyNCdrTumDE7WKlZscszTwL5RUmHihqtQwvGZYf9G0Zcnf7PaWNalR HyIyCsq5rsvHA== Message-ID: <0c304de2-26c6-49b3-9809-bf1e7619e5b8@kernel.org> Date: Tue, 15 Oct 2024 15:31:37 +0200 Precedence: bulk X-Mailing-List: devicetree@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: Jyothi Kumar Seerapu , Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Andi Shyti , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= Cc: cros-qcom-dts-watchers@chromium.org, linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, quic_msavaliy@quicinc.com, quic_vtanuku@quicinc.com References: <20241015120750.21217-1-quic_jseerapu@quicinc.com> <20241015120750.21217-2-quic_jseerapu@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit 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. Best regards, Krzysztof