From patchwork Mon Aug 8 07:40:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrice CHOTARD X-Patchwork-Id: 596412 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 9F326C3F6B0 for ; Mon, 8 Aug 2022 07:41:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238743AbiHHHlg (ORCPT ); Mon, 8 Aug 2022 03:41:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241909AbiHHHl1 (ORCPT ); Mon, 8 Aug 2022 03:41:27 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C1D412D1C; Mon, 8 Aug 2022 00:41:23 -0700 (PDT) Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2787Iv8L007741; Mon, 8 Aug 2022 09:41:02 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=selector1; bh=AP3c4vCG+hy28xwUF/P0YX2tPnnN/Gf/cJsN6OS+P7k=; b=vX3ebXFWNTAarsJUuG2imn4UrPchQug4OCcvkB8UFjkZUbDc6RTv/2O9UkvKbduKT6uJ +waxhpaRSwohiDrD0j34h9HRsi4zoyE2bfgHFXrfeK1OaunfL6XpbzGSMkyg8lGHom+8 EW0Zr47aPKZuIZoT1NlNuVktU/fbk/ztSybmm9NCj5rzGgQQYasiDCVBUrVBaaamV0Xs NE6fvMLprFsa/hNEcti4m7RBfzHCE1r8YRncn5ZoOuOSvU7y5TP068BbdguGFXPTBwYD eEkSbN8Cz5i9JB80bDjP6SS1j5s5mfxlLybdFlTWYioMD5BbzAe3FqchhiUEDJPvlsZ+ yg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3hsdqkg8ut-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 08 Aug 2022 09:41:02 +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 1070C100038; Mon, 8 Aug 2022 09:41:00 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 7AA672171DD; Mon, 8 Aug 2022 09:41:00 +0200 (CEST) Received: from localhost (10.75.127.117) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Mon, 8 Aug 2022 09:40:58 +0200 From: To: Mark Brown , Alexandre Torgue , , CC: , , , , , , Subject: [PATCH 0/3] spi: stm32_qspi: use QSPI bus as 8 lines communication channel Date: Mon, 8 Aug 2022 09:40:48 +0200 Message-ID: <20220808074051.44736-1-patrice.chotard@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.117] X-ClientProxiedBy: GPXDAG2NODE5.st.com (10.75.127.69) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-08_05,2022-08-05_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Patrice Chotard The goal of this series is to allow to use QSPI bus as a 8 lines communication channel for specific purpose. The QSPI block offers the possibility to communicate with 2 flashes in parrallel using the dual flash mode, 8 data lines are then used. A new ST specific property need to be created to enable this dual flash mode. The addition of the legacy transfer_one_message() spi callback is also needed as currently the stm32-qspi driver only supports spi_controller_mem_ops API. Patrice Chotard (3): dt-bindings: spi: stm32: Add st,dual-flash property in st,stm32-qspi.yaml spi: stm32_qspi: Add transfer_one_message() spi callback ARM: dts: stm32: Create separate pinmux for qspi cs pin in stm32mp15-pinctrl.dtsi .../bindings/spi/st,stm32-qspi.yaml | 8 ++ arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 50 +++++--- arch/arm/boot/dts/stm32mp157c-ev1.dts | 12 +- drivers/spi/spi-stm32-qspi.c | 111 ++++++++++++++++-- 4 files changed, 155 insertions(+), 26 deletions(-)