Ok i see.. :)
thanks a lot.
Von:
Franck Jullien <franck.jullien@gmail.com>
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 <christian.buettner@rafi.de>:
> 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 <franck.jullien@gmail.com>
> 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 <christian.buettner@rafi.de>
>>
>> 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 <franck.jullien@gmail.com>
>> 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 <christian.buettner@rafi.de>
>> >
>> > 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.
>