[U-Boot] [PATCH] Do not mux and setup SPI if disabled in the config

[Stefan Roese <sr@denx.de>]

(added Stefano as imx custodian)

On 04.08.2015 19:28, Clemens Gruber wrote:
> This allows baseboards without SPI to compile.
> 
> Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
> Cc: Markus Niebel <Markus.Niebel@tq-group.com>
> Cc: Tom Rini <trini@konsulko.com>
> ---
>   board/tqc/tqma6/tqma6.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/board/tqc/tqma6/tqma6.c b/board/tqc/tqma6/tqma6.c
> index 29db838..5c4d104 100644
> --- a/board/tqc/tqma6/tqma6.c
> +++ b/board/tqc/tqma6/tqma6.c
> @@ -131,6 +131,8 @@ int board_mmc_init(bd_t *bis)
>   	return 0;
>   }
>   
> +#if defined(CONFIG_MXC_SPI)
> +
>   static iomux_v3_cfg_t const tqma6_ecspi1_pads[] = {
>   	/* SS1 */
>   	NEW_PAD_CTRL(MX6_PAD_EIM_D19__GPIO3_IO19, SPI_PAD_CTRL),
> @@ -161,6 +163,8 @@ int board_spi_cs_gpio(unsigned bus, unsigned cs)
>   		(cs == CONFIG_SF_DEFAULT_CS)) ? TQMA6_SF_CS_GPIO : -1;
>   }
>   
> +#endif /* defined(CONFIG_MXC_SPI) */
> +
>   static struct i2c_pads_info tqma6_i2c3_pads = {
>   	/* I2C3: on board LM75, M24C64,  */
>   	.scl = {
> @@ -201,7 +205,9 @@ int board_init(void)
>   	/* address of boot parameters */
>   	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
>   
> +#if defined(CONFIG_MXC_SPI)
>   	tqma6_iomuxc_spi();
> +#endif
>   	tqma6_setup_i2c();

Hmmm. This should not be necessary. Please take a look at the wru4
baseboard addition that is already in mainline. Especially this
patch:

commit 34ee786e5b388625e5a0e0891ee69d4bbf34178b
Author: Stefan Roese <sr@denx.de>
Date:   Thu Mar 12 13:34:30 2015 +0100

    arm: mx6: tqma6: Update to optionally configure an alternative SPI setup
    
    By making the tqma6_iomuxc_spi() weak, this patch adds the possibility to
    add a different function for this SPI configuration. This can be used
    by other baseboards, that might have a different SPI setup.
    
    This patch will be used by the upcoming WRU-IV board support which also
    uses the TQMa6 SoM.
    
    Signed-off-by: Stefan Roese <sr@denx.de>


This is enough in your baseboard file now:

void tqma6_iomuxc_spi(void)
{
        /* No SPI on this baseboard */
}

Thanks,
Stefan