i always get the response: m25p@m25p0: unrecognized JEDEC id ffffff SPI Flah:MX25L8005MC-15G CPU: imx53 Here is my board init code: //SPI + FLASH structs const struct flash_platform_data tx53_flash = { .type = "mx25l8005", .name = "spi_flash", }; //MX25L8005MC-15G static const struct spi_board_info mx53_spi_board_info[] = { { .name = "m25p", .max_speed_hz = 30000000, .bus_num = 0, .chip_select = 0, .bits_per_word = 8, .mode = SPI_MODE_0, .platform_data = &tx53_flash, }, }; static struct spi_imx_master tx53_spi = { .num_chipselect = 1, }; //PIN MUX: MX53_PAD_EIM_D17__ECSPI1_MISO, //SPI MISO - EEPROM SO MX53_PAD_EIM_D18__ECSPI1_MOSI, //SPI MOSI - EEPROM SI MX53_PAD_EIM_D16__ECSPI1_SCLK, //SPI SCLK - EEPROM SCK MX53_PAD_EIM_EB2__ECSPI1_SS0, //SPI SS1 - EEPROM CS //device init code: spi_register_board_info(mx53_spi_board_info, ARRAY_SIZE(mx53_spi_board_info)); imx53_add_spi0(&tx53_spi); Any ideas, whats wrong? christian Von: Franck Jullien An: christian.buettner@rafi.de, Kopie: barebox@lists.infradead.org Datum: 30.07.2012 10:33 Betreff: Re: Re: Re: nor flash board init code 2012/7/30 : > Whooosch and it worked! > > devinfo > devices: > ... > `---- mem1 > `---- 0x00000000-0xfffffffe: /dev/mem > `---- i2c-imx2 > `---- imx_spi0 > `---- m25p0 > `---- fec_imx0 > `---- miidev0 > ... > > barebox:/ devinfo m25p0 > resources: > driver: none > > no parameters available > barebox:/ > > But why is driver in devinfo = none? > It used to work. You need to find why it doesn't work anymore ;) > christian > > > Von: Franck Jullien > An: christian.buettner@rafi.de, > Kopie: barebox@lists.infradead.org > Datum: 30.07.2012 10:07 > Betreff: Re: Re: nor flash board init code > ________________________________ > > > > Hi, > > 2012/7/30 >> >> Thanks for the code! >> >> Here is my approach: >> >> const struct flash_platform_data tx53_flash = { >> .type = "mx25l8005", >> .name = "spi_flash", >> }; >> >> >> //MX25L8005MC-15G >> static const struct spi_board_info mx53_spi_board_info[] = { >> { >> .name = "mx25l8005", > > > Here sould be the driver name: .name = "m25p", > >> >> .max_speed_hz = 70000000, >> .bus_num = 0, >> .chip_select = 0, >> .bits_per_word = 8, >> .mode = SPI_MODE_0, >> .platform_data = &tx53_flash, >> }, >> }; >> >> static struct spi_imx_master tx53_spi = { >> .num_chipselect = 1, >> }; >> >> >> init_devices { >> >> ... >> spi_register_board_info(mx53_spi_board_info, >> ARRAY_SIZE(mx53_spi_board_info)); >> >> add_generic_device("m25p",-1,"m25p",MX53_ECSPI1_BASE_ADDR,64 * >> 1024,IORESOURCE_MEM,&mx53_spi_board_info); > > You have to add the SPI master device here. The m25p device will be > probed automagically (AFAIR). > > >> >> ... >> } >> >> >> When the m25p80.c driver probes i get no spi instance: >> >> static int m25p_probe(struct device_d *dev) { >> struct spi_device *spi = (struct spi_device *)dev->type_data; >> const struct spi_device_id *id = NULL; >> ... >> } >> >> struct spi_device *spi is always null >> >> Whats wrong here? >> >> christian >> >> >> >> Von: Franck Jullien >> An: christian.buettner@rafi.de, >> Kopie: barebox@lists.infradead.org >> Datum: 27.07.2012 13:33 >> Betreff: Re: nor flash board init code >> ________________________________ >> >> >> >> 2012/7/25 >> > >> > hi all, >> > is there any example board init code to load the mx25l8005 spi nor-flash >> > through the imx53 (TX53 from KARO)? >> > I want to use the m25p80 driver to read and write. >> > >> > christian >> > _______________________________________________ >> > barebox mailing list >> > barebox@lists.infradead.org >> > http://lists.infradead.org/mailman/listinfo/barebox >> > >> >> Hi Christian, >> >> This is what I use with the Altera SPI controller + an SPI flash device: >> >> >> http://www.elec4fun.fr/index.php?option=com_content&view=article&id=10&Itemid=153 >> >> static struct spi_altera_master altera_spi_0_data = { >> .num_chipselect = 1, >> .spi_mode = 0, /* SPI mode of the EPCS flash controller */ >> .databits = 8, /* Data length of the EPCS flash controller */ >> .speed = 20000000, /* EPCS flash controller speed */ >> }; >> >> >> static struct flash_platform_data epcs_flash = { >> .name = "epcs", /* Cdev name, optional */ >> .type = "m25p40", /* Device type, required for non JEDEC chips */ >> }; >> >> static struct spi_board_info generic_spi_board_info[] = { >> { >> .name = "m25p", >> .max_speed_hz = 20000000, >> .bus_num = 0, >> .chip_select = 0, >> .bits_per_word = 8, >> .mode = SPI_MODE_0, >> .platform_data = &epcs_flash, >> } >> }; >> >> static int myboard_devices_init(void) { >> >> ... >> >> spi_register_board_info(myboard_spi_board_info, >> ARRAY_SIZE(myboard_spi_board_info)); >> >> add_generic_device("altera_spi", -1, NULL, NIOS_SOPC_EPCS_BASE, 0x18, >> IORESOURCE_MEM, &altera_spi_0_data); >> >> ... >> >> Franck. >> > > Franck. >