[PATCH 2/3] spi: spi-gpio: support different word widths

Ahmad Fatoum a.fatoum at pengutronix.de
Wed Sep 25 23:07:49 PDT 2024


On 25.09.24 16:06, Sascha Hauer wrote:
> The spi-gpio driver only supports 8bit word width. Add support for
> arbitrary word widths up to 32bit.
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>

With below issue addressed:

Reviewed-by: Ahmad Fatoum <a.fatoum at pengutronix.de>

>  static int gpio_spi_setup(struct spi_device *spi)
>  {
> -	if (spi->bits_per_word != 8) {
> -		dev_err(spi->master->dev, "master does not support %d bits per word\n",
> -			spi->bits_per_word);
> -		return -EINVAL;
> -	}
> -
> +	gpio_spi_set_cs(spi, 0);

Chipselect is already asserted/deasserted in gpio_spi_transfer, why deassert it here?

>  	return 0;
>  }
>  
> 


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