Re: SPI driver for spi_mpc83xx
Thanks Ben
works.
Ben Warren wrote:
Fabio,
Note: I've changed the e-mail subject back to the original. In the
future, please ensure that it remains intact.
fabio777 wrote:
Thanks Ben,
Here it is
static struct fsl_spi_platform_data k_platform_data = {
.initial_spmode = 0,
.bus_num = 1,
Probably should be bus_num = 0
.max_chipselect = 1,
/* board specific information */
.activate_cs = k_cs_activate,
.deactivate_cs = k_cs_deactivate,
.sysclk = 266,
};
static struct spi_board_info spi_board_info[] __initdata = { {
.modalias = kplus,
.platform_data = k_platform_data,
.max_speed_hz = 12,
.bus_num = 1,
Again, bus_num probably should be 0
.chip_select = 0,
},
};
struct platform_device k_plus = {
.name = kplus,
name should be mpc83xx_spi. At initialization, the SPI controller
driver searches the registered platform devices (models of board
hardware) for a match. Without a match, it gives up.
.id = 1,
.dev = {
.platform_data = k_platform_data,
},
};
platform_device_register(k_plus);
Do you add the SPI controller's resources (base address and IRQ?)
You'll need to in order for this to work. On my board, I use
'platform_device_register_simple()', passing the name and the two
resources, then call 'platform_add_data()', passing in the platform
data structure.
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info))
Good
and then calls spi_register_driver(k_driver);
I don't think this last call is needed.
I can't get the into the *probe functions.
Thanks
regards,
Ben
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Re: Linuxppc-embedded Digest, Vol 39, Issue 48
Thanks Ben,
Here it is
static struct fsl_spi_platform_data k_platform_data = {
.initial_spmode = 0,
.bus_num = 1,
.max_chipselect = 1,
/* board specific information */
.activate_cs = k_cs_activate,
.deactivate_cs = k_cs_deactivate,
.sysclk =266,
};
static struct spi_board_info spi_board_info[] __initdata = { {
.modalias= kplus,
.platform_data= k_platform_data,
.max_speed_hz= 12,
.bus_num= 1,
.chip_select= 0,
},
};
struct platform_device k_plus = {
.name= kplus,
.id= 1,
.dev= {
.platform_data = k_platform_data,
},
};
platform_device_register(k_plus);
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info))
and then calls spi_register_driver(k_driver);
I can't get the into the *probe functions.
Thanks
fabio777 wrote:
Has anyone been using this driver ?
I use it, on ARCH=powerpc, though.
For legacy reasons I need to keep the ppc=arch however I haven't found
out how to get this driver probed at start-up even basing my init on
Lublock.
The driver's expecting a platform device with name mpc83xx_spi to be
registered in board init code. If you post your init code I may be able
to help.
regards,
Ben
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SPI driver for spi_mpc83xx
Has anyone been using this driver ? For legacy reasons I need to keep the ppc=arch however I haven't found out how to get this driver probed at start-up even basing my init on Lublock. Any help would be very appreciated - Thanks ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
