On 25 May 2007 09:07:24 +0200
Andrew Victor wrote:
> hi,
>
> > static struct spi_board_info dk_spi_devices[] = {
> > { /* DataFlash chip */
> > .modalias = "mtd_dataflash",
> > .chip_select = 0,
> > .max_speed_hz = 15 * 1000 * 1000,
> > },
> >
> > are broken cause all of them have chip_select = 0 ?
>
> I doubt it.
>
> The DK board definitely works.
> All SAN People's RM9200-based products have DataFlash on CS0 - boot from
> CS0, mount root filesystem (cramfs) on CS0, writable JFFS2 partition on
> CS0.
>
> That's with legacy SPI and at91_dataflash.c. (ie, CS0 under SPI
> control).
>
In such a case it should have
static struct spi_board_info dk_spi_devices[] = {
{ /* DataFlash chip */
// .modalias = "mtd_dataflash",
.modalias = "at91_dataflash",
.chip_select = 0,
.max_speed_hz = 15 * 1000 * 1000,
},
Cause from my understanding "mtd_dataflash" triggers usage of new SPI framework
(driver/spi/atmel_spi.c).
What I currently have:
at91_dataflash.c + 2.6.20+maxim + legacy SPI - working
at91_dataflash.c + 2.6.22rc1+maxim + legacy SPI - not working
mtd_dataflash.c + 2.6.20+maxim + atmel_spi.c - not working
mtd_dataflash.c + 2.6.22rc1+maxim + atmel_spi.c - not working
Now I'm trying understand what was changed between 2.6.20+maxim and
2.6.22rc1+maxim
Best regards, Ivan
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