Hi Prabhakar,

On Mon, Aug 03, 2020 at 03:31:47PM +0100, Lad Prabhakar wrote:
> Fallback to parallel mode if bus_type doesn't match the supported
> interfaces by the driver.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad...@bp.renesas.com>
> ---
>  drivers/media/i2c/ov5640.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
> index 08c67250042f..4e88b0540740 100644
> --- a/drivers/media/i2c/ov5640.c
> +++ b/drivers/media/i2c/ov5640.c
> @@ -3074,6 +3074,12 @@ static int ov5640_probe(struct i2c_client *client)
>               return ret;
>       }
>  
> +     /* fallback to parallel mode */
> +     if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL &&
> +         sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY &&
> +         sensor->ep.bus_type != V4L2_MBUS_BT656)
> +             sensor->ep.bus_type = V4L2_MBUS_PARALLEL;

You basically need the type from the v4l2_fwnode_endpoint_parse(), and if
you don't have any of the above bus types, probe should fail. The old
bindings were documented in a way that either parallel or CSI-2 bus will be
used, and there were no defaults. So all should be well.

-- 
Sakari Ailus

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