On Tue, Aug 04, 2009 at 03:38:40PM +0200, Joakim Tjernlund wrote:
> Anton Vorontsov <avoront...@ru.mvista.com> wrote on 15/07/2009 00:09:31:
> >
> > On Tue, Jul 14, 2009 at 11:20:13PM +0200, Joakim Tjernlund wrote:
> > [...]
> > > >But any users of the legacy bindings should be in-tree.
> > >
> > > ehh, it was working until you made it OF only. Why do call the native
> > > way legacy? It is the method all non OF arch uses.
> >
> > It's legacy because there are no in-tree users anymore. Nowadays
> > we're trying to pass all needed information via OF, and we're
> > trying to avoid ugly platform-dependant hacks. Your SPI scheme
> > can be easily described via OF, but sure, it's hard to implement
> > it with the current SPI/OF subsystem.
>
> Sorry for the long delay, I have been on vaction and been busy with other
> stuff.
>
> Tell me, how does this new OF SPI device scheme work out if you want
> to use the bitbanged SPI driver?
spi-controller {
...
compatible = "generic-bitbang-spi";
gpios = <GPIO_CLK GPIO_MOSI GPIO_MISO>;
spi,chip-select-machines = <&gpio_csm &board_csm>;
gpio_csm: chip-select-machine {
#address-cells = <1>;
#size-cells = <0>;
compatible = "generic-gpio-csm";
gpios = <GPIO_CS1 GPIO_CS2>;
touchscr...@0 {
reg = <0>; /* using GPIO CS1 */
};
eep...@1 {
reg = <1>; /* using GPIO CS2 */
};
};
};
localbus {
...
board_csm: chip-select-machine {
#address-cells = <1>;
#size-cells = <0>;
compatibe = "board-specific-csm";
light-sen...@0 {
reg = <0>; /* using board-specific "CS3" */
};
batt...@1 {
reg = <1>; /* using board-specific "CS4" */
};
};
};
--
Anton Vorontsov
email: cbouatmai...@gmail.com
irc://irc.freenode.net/bd2
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