Hi Niklas
On Sat, Mar 15, 2025 at 04:27:08PM +0100, Niklas Söderlund wrote:
> Extend the device tree parsing to optionally parse the cs memory region
> by name. The change is backward compatible with the device tree model
> where a single unnamed region describing only the ISP channel select
> function.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Reviewed-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Thanks
j
> ---
> drivers/media/platform/renesas/rcar-isp/csisp.c | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/renesas/rcar-isp/csisp.c b/drivers/media/platform/renesas/rcar-isp/csisp.c
> index a86d2a9a4915..931c8e3a22be 100644
> --- a/drivers/media/platform/renesas/rcar-isp/csisp.c
> +++ b/drivers/media/platform/renesas/rcar-isp/csisp.c
> @@ -419,7 +419,17 @@ static const struct media_entity_operations risp_entity_ops = {
> static int risp_probe_resources(struct rcar_isp *isp,
> struct platform_device *pdev)
> {
> - isp->csbase = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
> + struct resource *res;
> +
> + /* For backward compatibility allow cs base to be the only reg if no
> + * reg-names are set in DT.
> + */
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cs");
> + if (!res)
> + isp->csbase = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
> + else
> + isp->csbase = devm_ioremap_resource(&pdev->dev, res);
> +
> if (IS_ERR(isp->csbase))
> return PTR_ERR(isp->csbase);
>
> --
> 2.48.1
>
>
