[PATCH 1/2] i.MX SPI: Setup SPI chipselect to inactive state while initializing device

Sascha Hauer s.hauer at pengutronix.de
Wed May 16 13:20:48 EDT 2012


On Wed, May 16, 2012 at 04:02:55PM +0400, Alexander Shiyan wrote:
> To avoid unnecessary preset initial state chipselect lines for SPI, set it to
> inactive state when adding devices to the system.
> 
> Signed-off-by: Alexander Shiyan <shc_work at mail.ru>

Applied, thanks

Sascha

> ---
>  drivers/spi/imx_spi.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/spi/imx_spi.c b/drivers/spi/imx_spi.c
> index 3b33b66..42358f2 100644
> --- a/drivers/spi/imx_spi.c
> +++ b/drivers/spi/imx_spi.c
> @@ -145,6 +145,10 @@ struct spi_imx_devtype_data {
>  
>  static int imx_spi_setup(struct spi_device *spi)
>  {
> +	struct imx_spi *imx = container_of(spi->master, struct imx_spi, master);
> +
> +	imx->chipselect(spi, 0);
> +
>  	debug("%s mode 0x%08x bits_per_word: %d speed: %d\n",
>  			__FUNCTION__, spi->mode, spi->bits_per_word,
>  			spi->max_speed_hz);
> -- 
> 1.7.3.4
> 
> 
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