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Tue, 15 Jan 2019 05:05:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XfetV4oObnO1Ao5RbL6IITR6kJNQu+C/k/NNrDfS4Bc=; b=LqJ5uk5VNHFwOp5E4camaegjLMo4x3cSU4EStSZirCx3BGe/aAhn10mLPGXSnIvRWfzDGtjho+Wf7tE2K/rANEo6V2DOAMATNKEPxBHlf5+ZTIoLrti9iWQxnNqxGkIkiJjnfkv5/4pbf1HB2qI69AZ4/Ahqgpy2kuJotDzLRWs= Received: from VI1PR04MB5726.eurprd04.prod.outlook.com (20.178.127.24) by VI1PR04MB5087.eurprd04.prod.outlook.com (20.177.50.148) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1516.14; Tue, 15 Jan 2019 10:05:04 +0000 Received: from VI1PR04MB5726.eurprd04.prod.outlook.com ([fe80::a1c2:cc79:80f3:3bcb]) by VI1PR04MB5726.eurprd04.prod.outlook.com ([fe80::a1c2:cc79:80f3:3bcb%4]) with mapi id 15.20.1516.019; Tue, 15 Jan 2019 10:05:04 +0000 From: Yogesh Narayan Gaur To: "linux-mtd@lists.infradead.org" , "boris.brezillon@bootlin.com" , "broonie@kernel.org" , "marek.vasut@gmail.com" , "vigneshr@ti.com" , "linux-spi@vger.kernel.org" , "devicetree@vger.kernel.org" CC: "tudor.ambarus@microchip.com" , "robh@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "computersforpeace@gmail.com" , "frieder.schrempf@exceet.de" , "linux-kernel@vger.kernel.org" , Yogesh Narayan Gaur Subject: [PATCH v7 0/5] spi: add support for octal mode Thread-Topic: [PATCH v7 0/5] spi: add support for octal mode Thread-Index: AQHUrLnIBDiZYyCHy06MvUHHePk4aQ== Date: Tue, 15 Jan 2019 10:05:04 +0000 Message-ID: <1547546584-5254-1-git-send-email-yogeshnarayan.gaur@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SG2PR06CA0123.apcprd06.prod.outlook.com (2603:1096:1:1d::25) To VI1PR04MB5726.eurprd04.prod.outlook.com (2603:10a6:803:e4::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=yogeshnarayan.gaur@nxp.com; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 29f030f7-b819-4b41-26ac-08d67ad0eb22 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Jan 2019 10:04:58.1172 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB5087 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for octal mode IO data transfer. Micron flash, mt35xu512aba, supports octal mode data transfer and NXP FlexSPI controller supports 8 data lines for data transfer (Rx/Tx). Patch series * Add parsing logic for m25p80.c device file. * Add opcodes for octal I/O commands in spi-nor framework, Read and Write p= roto for (1-1-8/1-8-8) mode. Opcodes are added as per octal data IO commands required for mt35xu512aba= flash. * Add mode bit required for octal mode in nxp-fspi driver [1]. * Define binding property 'spi-rx/tx-bus-width' for LX2160ARDB target [1]. Tested on LX2160ARDB target with nxp-fspi driver, below are Read performance number of 1-1-1 and 1-1-8 read protocol. root@lxxx:~# cat /proc/mtd dev: size erasesize name mtd0: 04000000 00001000 "spi0.0" mtd1: 04000000 00001000 "spi0.1" root@lxxx:~# time mtd_debug read /dev/mtd0 0x0 0x1000000 0read Copied 16777216 bytes from address 0x00000000 in flash to 0read real 0m2.792s user 0m0.000s sys 0m2.790s root@lxxx:~# time mtd_debug read /dev/mtd1 0x0 0x1000000 0read Copied 16777216 bytes from address 0x00000000 in flash to 0read real 0m0.441s user 0m0.000s sys 0m0.440s root@ls1012ardb:~# Flash device MTD0 configured in 1-1-1 protocol. Flash device MTD1 configured in 1-1-8 protocol. [1] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=3D86130 Changes for v7: - Rebase on top of SPI tree https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/ branch: for-next - Drop below patches from series as these have already been applied. 'spi-add-support-for-octal-mode-I-O-data-transfer.patch' and 'spi-spi-mem-add-support-for-octal-mode-I-O-data-tran.patch' - Add r-o-b tag of Tudor Ambarus for patch 'mtd-spi-nor-add-opcodes-for-octal-Read-Write-command.patch' Changes for v6: - Correct S-o-b tag with full author name as 'Yogesh Narayan Gaur'. - Rebase on top of v4.20-rc5. Changes for v5: - Modified string 'octo' as 'octal' in all patches. Changes for v4: - Rebase on top of v4.20-rc2. - Modify octo entries enum value in spi.h. Changes for v3: - Add octo mode support in spi_setup(). - Rename all patches with 'octal' string modified as 'octo'. Changes for v2: - Incorporated review comments of Boris and Vignesh. Yogesh Narayan Gaur (5): mtd: spi-nor: add opcodes for octal Read/Write commands mtd: spi-nor: add octal read flag for flash mt35xu512aba mtd: m25p80: add support of octal mode I/O transfer spi: nxp-fspi: add octal mode flag bit for octal support arm64: dts: lx2160a: update fspi node .../boot/dts/freescale/fsl-lx2160a-rdb.dts | 4 ++++ drivers/mtd/devices/m25p80.c | 9 ++++++++- drivers/mtd/spi-nor/spi-nor.c | 19 ++++++++++++++++--- drivers/spi/spi-nxp-fspi.c | 4 ++-- include/linux/mtd/spi-nor.h | 16 ++++++++++++---- 5 files changed, 42 insertions(+), 10 deletions(-) --=20 2.17.1