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Mon, 15 Oct 2018 12:13:57 +0000 Received: from VI1PR04MB1038.eurprd04.prod.outlook.com ([fe80::d887:3c96:479a:4123]) by VI1PR04MB1038.eurprd04.prod.outlook.com ([fe80::d887:3c96:479a:4123%3]) with mapi id 15.20.1228.027; Mon, 15 Oct 2018 12:13:57 +0000 From: Yogesh Narayan Gaur To: "linux-mtd@lists.infradead.org" , "boris.brezillon@bootlin.com" , "marek.vasut@gmail.com" , "vigneshr@ti.com" , "linux-spi@vger.kernel.org" , "devicetree@vger.kernel.org" CC: "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 v2 0/7] spi: add support for octal mode Thread-Topic: [PATCH v2 0/7] spi: add support for octal mode Thread-Index: AQHUZICMj9na8RY3aESpiAu8NFV+KQ== Date: Mon, 15 Oct 2018 12:13:57 +0000 Message-ID: <1539605534-22302-1-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: SG2PR02CA0054.apcprd02.prod.outlook.com (2603:1096:4:54::18) To VI1PR04MB1038.eurprd04.prod.outlook.com (2a01:111:e400:5092::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=yogeshnarayan.gaur@nxp.com; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: 7MlgGYKV5HzGRlauAaNiMR03uy3x3Z/g3NUftbxZwy6fazh3VHNk9qBiTV9O+emOIRthXBpAtCqCKpgcgI8DRBxnsbZJtPg3491l4tZ0VUsrXeuoZGGoDXGRy4apvjlQeThsn7gDnXXY3Kw4Y/oTV0HhyKUD3aLXRXFT2vFydyRezKGCCkhqnIwTRiDlnTeoqFLcW5BtBM4kK8Wf+hrJae3hHCVxcP2BMisDUzvzBPkmw8aApHD/GFbWgYS//K8UbkPxPB2iFHcIeBgwzU//oq6uS6KaGdU5nsMax9mR9RDbo63Ou+Tp/8ONMQvRlHRh1Sr/3EH/M2iphmJ7mXwzOu/1n7P3c98ImtL1CWaW7g0= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 73c79c08-e4ad-487d-de31-08d63297ae67 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Oct 2018 12:13:57.5663 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB4240 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 support for octal mode flags and parsing of same in spi driver. * Add parsing logic for spi-mem framework and 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= [1] flash. * Add mode bit required for octal mode in nxp-fspi driver [2]. * Define binding property 'spi-rx/tx-bus-width' for LX2160ARDB target [2]. Cherry pick below 2 patches (from: https://git.kernel.org/pub/scm/linux/ker= nel/git/broonie/spi.git): c639f871febe6667d9afce28108c634e5636c735 spi: spi-mem: Fix inverted log= ic in op sanity check db122eb8a749a1eff038f9a282c620ab16c4be1d spi: spi-mem: Add extra sanity= checks on the op param 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=3D70384 [2] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=3D70210 Yogesh Gaur (7): spi: add support for octal I/O data transfer spi: spi-mem: add support for octal I/O data transfer 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 I/O transfer spi: nxp-fspi: add mode flag bit for octal support arm64: dts: lx2160a: update fspi node Changes for v2: Incorporated review comments of Boris and Vignesh. arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 4 ++++ drivers/mtd/devices/m25p80.c | 9 ++++++++- drivers/mtd/spi-nor/spi-nor.c | 15 ++++++++++++++- drivers/spi/spi-mem.c | 9 ++++++++- drivers/spi/spi-nxp-fspi.c | 4 ++-- drivers/spi/spi.c | 6 ++++++ include/linux/mtd/spi-nor.h | 8 ++++++++ include/linux/spi/spi.h | 2 ++ 8 files changed, 52 insertions(+), 5 deletions(-) --=20 2.7.4