Anton Vorontsov <avoront...@ru.mvista.com> wrote on 04/08/2009 16:22:50: > > 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" */ > }; > }; > };
hmm, this looks promising. Can I write my own board-specific-csm and attach it to the SPI CS engine? I don't quite se how, the 8xxx SPI driver only looks for gpio functions. Perhaps this is something that you are working on? Jocke _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev