From mboxrd@z Thu Jan 1 00:00:00 1970 From: Champ, Andy Date: Fri, 25 Nov 2016 16:37:17 +0000 Subject: [U-Boot] Macronix NOR_SPI and Quad I/O Message-ID: <1480091837674.61259@amazon.co.uk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi all, in the table in drivers/mtd/spi/spi_flash_ids.c there is a flag WR_QPP set against Macronix devices (including the ones Dumitru is just adding). This is used when programming the devices on a 4-bit bus to select the command to use for programming - either CMD_QUAD_PAGE_PROGRAM (0x32) or CMD_PAGE_PROGRAM (0x2). The Macronix devices that I have a spec for do not mention command 0x32. Each of the devices that I have a spec for ( MX25L25635F MX25U51245G MX25V8035F and MX25V1635F ) use command 0x38 instead. This would suggest to me that devices that support quad I/O, and have Macronix NOR-SPI, won't be able to program them. Am I missing something, or is this a problem? I'm not able to check because we don't use Quad I/O. Regards Andy Champ Amazon Lab126 Cambridge, UK.