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Thu, 9 Dec 2021 17:23:15 +0000 From: To: , CC: , , , , , , , Subject: Re: [PATCH 2/2] mtd: spi-nor: macronix: Add support for mx66lm1g45g Thread-Topic: [PATCH 2/2] mtd: spi-nor: macronix: Add support for mx66lm1g45g Thread-Index: AQHX7SFzW/jHuePPdUyxMpBUZMO4Yw== Date: Thu, 9 Dec 2021 17:23:15 +0000 Message-ID: <3c848db7-dc76-5d7b-3131-b6b857230d7f@microchip.com> References: <20211209172109.398258-1-tudor.ambarus@microchip.com> <20211209172109.398258-2-tudor.ambarus@microchip.com> In-Reply-To: <20211209172109.398258-2-tudor.ambarus@microchip.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microchip.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 7f200881-17b0-4f4a-f911-08d9bb3895f8 x-ms-traffictypediagnostic: SA0PR11MB4638:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7219; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On 12/9/21 7:21 PM, Tudor Ambarus wrote: > mx66lm1g45g supports just 1-1-1, 8-8-8 and 8d-8d-8d modes. There are > versions of mx66lm1g45g which do not support SFDP, thus use > SPI_NOR_SKIP_SFDP. The RDID command issued through the octal peripheral > interface outputs data always in STR mode for whatever reason. Since > 8d-8d-8s is not common, avoid reading the ID when enabling the octal dtr > mode. Instead, read back the CR2 to check if the switch was successful. > Tested in 1-1-1 and 8d-8d-8d modes using sama7g5 QSPI IP. > > Signed-off-by: Tudor Ambarus > --- > # cat /sys/devices/platform/soc/e080c000.spi/spi_master/spi1/spi1.0/spi-nor/jedec_id c2853b # cat /sys/devices/platform/soc/e080c000.spi/spi_master/spi1/spi1.0/spi-nor/manufacturer macronix # cat /sys/devices/platform/soc/e080c000.spi/spi_master/spi1/spi1.0/spi-nor/partname mx66lm1g45g # cat /sys/devices/platform/soc/e080c000.spi/spi_master/spi1/spi1.0/spi-nor/sfdp cat: can't open '/sys/devices/platform/soc/e080c000.spi/spi_master/spi1/spi1.0/spi-nor/sfdp': No such file or directory ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/