Got the solution! PINMUX: /*SPI*/ 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__GPIO2_30, //SPI SS0 - EEPROM CS Data Structures: #define ECUv6_ECSPI1_CS0 IMX_GPIO_NR(2, 30) //SPI Flash 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 = (void*)&tx53_flash, }, }; static int ecspi_0_cs[] = { ECUv6_ECSPI1_CS0 }; static struct spi_imx_master tx53_spi = { .chipselect = ecspi_0_cs, .num_chipselect = ARRAY_SIZE(ecspi_0_cs), }; Problem was: The internal chipselect did not work -> Using the GPIO for Chipselect and the PinMux 'SPI to GPIO' (not 'SPI to SSO') and a lower hz setting (not the max. 70000000) made the spi flash working!! christian Von: Franck Jullien An: christian.buettner@rafi.de, Kopie: barebox@lists.infradead.org Datum: 30.07.2012 16:28 Betreff: Re: Re: Re: Re: nor flash board init code 2012/7/30 : > 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, > }; > I'm not familiar with the IMX spi but in the tx51 or ccxmx51 board file one can read: static struct spi_imx_master tx51_spi_0_data = { .chipselect = spi_0_cs, .num_chipselect = ARRAY_SIZE(spi_0_cs), }; #define CCXMX51_ECSPI1_CS0 IMX_GPIO_NR(4, 24) #define CCXMX51_ECSPI1_CS1 IMX_GPIO_NR(4, 25) static int ecspi_0_cs[] = { CCXMX51_ECSPI1_CS0, CCXMX51_ECSPI1_CS1, }; static struct spi_imx_master ecspi_0_data = { .chipselect = ecspi_0_cs, .num_chipselect = ARRAY_SIZE(ecspi_0_cs), }; Don't you need to set .chipselect ? > > > //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. >> > Do you have a scope ? This is the easiest way to debug SPI ;)