OMAPL138 SPI1 CS pinmux in kernel

Hi Kumar,

Can you please tell me which board file are you using ?

As per my understanding, If you are using  "board-da850-sdi.c" then not required, by default it got enabled,

If you used any other board file which is not enabled SPI1 by default, then you need to enable SPI1 as you said above.

For pinmuxing:

arch/arm/mach-davinci//include/mach/mux.h

---> use SPI1 definitions from mux.h (if not then declare it)

static const short da8xx_evm_spi_pins[] __initdata = {
    DA830_SPI1_SOMI_0, DA830_SPI1_SIMO_0, DA830_SPI1_CLK, DA830_NSPI1_ENA,
    DA830_NSPI1_SCS_0,
    -1
};

        ret = davinci_cfg_reg_list(da8xx_evm_spi_pins);   --> Enable pin muxing
        if (ret)
            pr_warning("da8xx_evm_init: spi mux setup failed: "
                    "%d\n", ret);

      da8xx_register_spi(1, da830evm_spi_info, ARRAY_SIZE(da830evm_spi_info));

Please take above code as  a example, change it as per your requirement,

Hi Mr.Titus Rathinaraj Stalin

         Thanks for the response. I'm using OMAPl138 LCDK kit and using

/arch/arm/mach-davinci/board-omapl138-hawk.c file as board file. I hope that i'm using correct board file.

I'm not using SPI_ENABLE pin because its optional as per datasheet i'm just using 4 wire.

I'll try and update you the status.

Thanks 

Kumar

Hi Kumar,

Got fixed?

Please update the status.

Hi Mr.Titus

         Sorry unfortunately SPI is conflict with Ethernet we need to desolder the resister from Ethernet PHY and solder the SPI DNI resister but we need Ethernet lot of works in application is based on ethernet. 

         I'll try soon and update you.. 

        Thanks for the attention.

Hi Mr. stalin

           My board file is board-omapl138-hawk.c 

          As per your reply i cant get reference code for DA850_SPI pin muxing. 

My spi pins at expansion header is SPI1_CLK, SPI1_SIMO, SPI1_SOMI and SPI1_SCSn_0. 

Kindly let me know the pinmux details and procedure for enable SPI.