From patchwork Fri Jun 5 13:05:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 209593 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB5BAC433DF for ; Fri, 5 Jun 2020 13:06:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 875CE206E6 for ; Fri, 5 Jun 2020 13:06:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="SLS407qU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726903AbgFENFf (ORCPT ); Fri, 5 Jun 2020 09:05:35 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:13986 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726719AbgFENFe (ORCPT ); Fri, 5 Jun 2020 09:05:34 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 055D2RnM005857; Fri, 5 Jun 2020 15:05:22 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=STMicroelectronics; bh=8N3eVj4nAPochlinsyGa/KTizCaO/PHeruM6iKW/aDc=; b=SLS407qU1Z9F+tF6q5vFRFJR785CroSIa1H4SlRTUAq1DcayxdSrZILrWXbQvkSs38as t4BhMYV2SEcX97GziY6PhSm9leR3QDIQAi1rUPHO0B6PEY7t2zLWMP9OWTeOYGoLDp6J A1vkrJhJjTzfrXze2kPk0DgOOSdtNCGx71Mn8x4RNLykjeyvKsJZTcj6zpir65+5RQu3 GC29ctnlyt4vw2TEx7qzJ/0qH5BMIRcWIgep/5nDXGw4ZYemdk3OcW1bC1cUzaTi1sw9 TL+fuoQL2jboRji1sapVjuS14HJ1voCn/af6zC4LQ49o850gcYm81Njn/YiIr8r+jIET Tw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 31fasmbkcp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 05 Jun 2020 15:05:22 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id EA26A100034; Fri, 5 Jun 2020 15:05:21 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag3node3.st.com [10.75.127.9]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B435B2C50BF; Fri, 5 Jun 2020 15:05:21 +0200 (CEST) Received: from localhost (10.75.127.47) by SFHDAG3NODE3.st.com (10.75.127.9) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 5 Jun 2020 15:05:21 +0200 From: Benjamin Gaignard To: , , , CC: , , , , , , , Benjamin Gaignard Subject: [PATCH v4 0/3] DCMI set minimum cpufreq requirement Date: Fri, 5 Jun 2020 15:05:16 +0200 Message-ID: <20200605130519.4184-1-benjamin.gaignard@st.com> X-Mailer: git-send-email 2.15.0 MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG5NODE1.st.com (10.75.127.13) To SFHDAG3NODE3.st.com (10.75.127.9) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-06-05_04:2020-06-04,2020-06-05 signatures=0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This series allow to STM32 camera interface (DCMI) to require a minimum frequency to the CPUs before start streaming frames from the sensor. The minimum frequency requirement is provided in the devide-tree node. Setting a minimum frequency for the CPUs is needed to ensure a quick handling of the interrupts between two sensor frames and avoid dropping half of them. version 4: - simplify irq affinity handling by using only dcmi_irq_notifier_notify() version 3: - add a cpumask field to track boosted CPUs - add irq_affinity_notify callback - protect cpumask field with a mutex Benjamin Gaignard (3): dt-bindings: media: stm32-dcmi: Add DCMI min frequency property media: stm32-dcmi: Set minimum cpufreq requirement ARM: dts: stm32: Set DCMI frequency requirement for stm32mp15x .../devicetree/bindings/media/st,stm32-dcmi.yaml | 8 ++ arch/arm/boot/dts/stm32mp151.dtsi | 1 + drivers/media/platform/stm32/stm32-dcmi.c | 122 +++++++++++++++++++-- 3 files changed, 123 insertions(+), 8 deletions(-)