Hi Jeff,
2014-04-25 18:18 GMT+02:00 Jeff Horn jeff@everlook.net:
Hi,
I am new to u-boot. I have u-boot working on a custom board for the freescale i.MX6 Solo. We have SPI NOR (m25p32) and with sf probe I can see the device. I can also erase/write/read and boot my kernel from SPI NOR. However, I just can not figure out how to use MTD's. I have MTDIDS_DEFAULT "nor0=m25p32.0" and I've defined MTDPARTS_DEFAULT. I just don't understand what I need to put in the MTDIDS_DEFAULT. In addition, it's obvious that there is no connection between cmd_sf and cmd_parts. With the MTDIDS_DEFAULT defined as above I get Device nor0 not found. Also. with flinfo I get nothing listed.
Any help/guidance setting up MTD's on SPI NOR is greatly appreciated.
MTD with SPI flash is currently not supported. You need a MTD translation layer driver. I have an experimental driver lying around [1] if you want to try it out.
You have to set MTDIDS_DEFAULT to "nor0=spi<BUS>.<CS>". MTDPARTS_DEFAULT could be set to something like "mtdparts=spi<BUS>.<CS>:512k(uboot),4m(kernel)". Adjust <BUS> and <CS> to your board. The identifier 'spi<BUS>.<CS>' in mtdparts will also be recognized by the kernel m25p80 driver when the MTD cmdline parser is enabled.
BTW: the flinfo command is for CFI flash only
[1] http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493...