* published by the Free Software Foundation. * it under the terms of the GNU General Public License version 2 as * This code is free software you can redistribute it and/or modify * Cleaned up and generalized based on mtd_dataflash.c * Some parts are based on lart.c by Abraham Van Der Merwe * Author: Mike Lavender, Copyright (c) 2005, Intec Automation Inc. * MTD SPI driver for ST w25qxx (and similar) serial flash chips Fixing the board file (6) to remove the wrong chip name. This made the driver to emit the following boot message: * Winbond - w25x 'blocks' are 64K, 'sectors' are 4KiB */ So now I will add Q chips and the problem will be gone. The table of Winbond chips looks as follows. The W25Q64 reports JEDEC id ef4017, which is not recognized by the m25P80 driver.

The two lines of chips have different JEDEC identifiers. In that file the table of Winbond chips includes the X variants, which are obsolete. (The dreaded AX88180 driver, which actually has been released since then.) Anyway, the m25p80 sits here: I guess I found the source of the problem, which is the m25p80 driver in the 2009 release which I am still using.

23:54:31 Re: Winbond flash driver in Linux kernel controller_data = &boot_flash_chip_info, chip_select = 2, /* Framework chip select. modalias = 'm25p80', /* Name of spi_driver */ * the modalias must be the same as spi device driver name */ #if defined(CONFIG_MTD_M25P80) || defined(CONFIG_MTD_M25P80_MODULE) The following work with M25P64, but not with W25Q64. Could you please suggest how to change these, or else please direct me to the relevant Wiki page. Unfortunately, the settings which work with Numonyx, do not work with Winbond. However, the M25P64 chips are becoming hard to buy, so I started using Winbond W25Q64. I have one board with Numonyx flash chips, and for those I successfully use the settings from the Blackfin Wiki pages. Which MTD driver should I use for Winbond SPI flash chips in Linux kernel? 18:20:31 Winbond flash driver in Linux kernel

Winbond spi flash linux driver