[PATCH] spi/fsl-espi: Add missing cell-index OF property

[York Sun]

Joakim,

I am not the maintainer for this driver. Adding Mark Brown.

York

On 06/19/2018 09:23 AM, Joakim Tjernlund wrote:
> espi does not look for a OF cell-index property which
> makes the bus numbering dynamic only. This add an
> optional cell-index.
> 
> Signed-off-by: Joakim Tjernlund <joakim.tjernlund at infinera.com>
> ---
>  drivers/spi/spi-fsl-espi.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
> index 1d332e23f6ed..56b71c5e2f10 100644
> --- a/drivers/spi/spi-fsl-espi.c
> +++ b/drivers/spi/spi-fsl-espi.c
> @@ -672,6 +672,14 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem,
>  
>  	dev_set_drvdata(dev, master);
>  
> +	if (dev->of_node) {
> +		u32 cell_index;
> +
> +		if (!of_property_read_u32(dev->of_node, "cell-index",
> +					  &cell_index))
> +			master->bus_num = cell_index;
> +	}
> +
>  	master->mode_bits = SPI_RX_DUAL | SPI_CPOL | SPI_CPHA | SPI_CS_HIGH |
>  			    SPI_LSB_FIRST | SPI_LOOP;
>  	master->dev.of_node = dev->of_node;
>