From patchwork Tue Apr 4 18:03:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijaya Krishna Nivarthi X-Patchwork-Id: 13200736 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B2C7C6FD1D for ; Tue, 4 Apr 2023 18:03:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235741AbjDDSDf (ORCPT ); Tue, 4 Apr 2023 14:03:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234983AbjDDSDe (ORCPT ); Tue, 4 Apr 2023 14:03:34 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 438904687; Tue, 4 Apr 2023 11:03:34 -0700 (PDT) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 334E5VV6000646; Tue, 4 Apr 2023 18:03:30 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id; s=qcppdkim1; bh=0BFYPQS1UqhfZZvnAAsFORkAxtcONmIhYtojA59W0HQ=; b=G+ZSC93oeHXb31ukD+/iSZIoLBhIy9I8jITJp5whjoOd2JJowFIvWUOJcT4hJSwSDbDe J0hrnGQWDBv/D3zT3UGEuZtMA1BWCMDv6qSNjuF0yDuJ1ROrgb3cAZuRl+Zv67l3uCK8 NW77rDUi/39j7SSQ7Fz4lkTHZkNC8PS/Ben7VPli63lefNdS/fHd7uU0tqqDdR0qPJze nz/A4Kfh1e4C5J9OBvXsjPhsB9I0Cy21k95TIR4JFYkVFeFziNQcJXJvfi3Lw8gpFuan jIw2yU1GZEFMAnSJxXuM7D12vbCY1Vk+9X6FJgoTvPbuRRZSM1c5/qNrlgmrxHc76y8v Mw== 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 3prnbt0nth-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 04 Apr 2023 18:03:30 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 334I0Lrn017842; Tue, 4 Apr 2023 18:03:25 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3ppdpkvtr7-1; Tue, 04 Apr 2023 18:03:25 +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 334I3PZp021639; Tue, 4 Apr 2023 18:03:25 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-vnivarth-hyd.qualcomm.com [10.213.111.166]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 334I3OVm021638; Tue, 04 Apr 2023 18:03:25 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3994820) id 42E653B69; Tue, 4 Apr 2023 23:33:24 +0530 (+0530) From: Vijaya Krishna Nivarthi To: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, broonie@kernel.org, vkoul@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Cc: quic_msavaliy@quicinc.com, dianders@chromium.org, mka@chromium.org, swboyd@chromium.org, quic_vtanuku@quicinc.com, Vijaya Krishna Nivarthi Subject: [PATCH 0/2] spi: Add DMA mode support to spi-qcom-qspi Date: Tue, 4 Apr 2023 23:33:18 +0530 Message-Id: <1680631400-28865-1-git-send-email-quic_vnivarth@quicinc.com> X-Mailer: git-send-email 2.7.4 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: OIanKax0CG2WIC_8UWTEf9Q49a-D9BVL X-Proofpoint-GUID: OIanKax0CG2WIC_8UWTEf9Q49a-D9BVL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-04_09,2023-04-04_05,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 lowpriorityscore=0 mlxlogscore=305 bulkscore=0 impostorscore=0 spamscore=0 clxscore=1011 adultscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304040165 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org There are large number of QSPI irqs that fire during boot/init and later on every suspend/resume. This could be made faster by doing DMA instead of PIO. Below is comparison for number of interrupts raised in 2 acenarios... Boot up and stabilise Suspend/Resume Sequence PIO DMA ======================= Boot-up 69088 19284 S/R 5066 3430 Vijaya Krishna Nivarthi (2): arm64: dts: qcom: sc7280: Add stream-id of qspi to iommus spi: spi-qcom-qspi: Add DMA mode support arch/arm64/boot/dts/qcom/sc7280.dtsi | 1 + drivers/spi/spi-qcom-qspi.c | 429 ++++++++++++++++++++++++++++++++--- 2 files changed, 399 insertions(+), 31 deletions(-)