Hi,
oops, I meant dio_17 indeed. Ok now I understood. About the sparsemem
problem, I'm discussing with Russell King in the arm mailing list. He
pointed out that we have to modify even some functions like
virt_to_phys and phys_to_virt. You can follow the topic here:
http://lists.arm.linux.org.uk/lurker/thread/20081125.081317.43322f89.en.html
--- In Matthieu Crapet <> wrote:
>
> Hi,
>
> 1) CS# of temperature sensor is connected to DIO_17 according to
> "TS-7200_Schematic_RevB.pdf" (2004.12.15).
> DIO_17 is FGPIO_1
> Remember that FGPIO[3:1] [8mA, PU]. It means that "port F bit 0" does
> not exist on ep9302.
> So FGPIO_1 means FGPIO[2].
>
> 2) Well, this is a restriction I set. There's no hardware limitiation.
> (struct spi_board_info ts72xx_spi_bus[] should not be too big).
>
> >
> >
> > 1) about the spi interface in ts72xx.c: in cs_command you use F gpio 2
> > as gpio port. I read the ts7200 schematic and I found that the chip
> > select signal for the temp. chip is dio_16. Dio_16 is connected to the
> > F gpio port 1 not 2, is there some mistake in the schematic?
> >
>
>
> > 2) in the spi driver you use 4 as num_chipselect, why? Could you
> > explain to me?
> >
>
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