On Thu, Oct 17, 2024 at 06:35:26PM +0300, Abel Vesa wrote:
> There are some cases where sharing the of_node renders different resources
> providers confused about the same resource being shared by two different
> devices.
Can you be more specific about what type of issue you are trying to
avoid here? Is it due to pinctrl for example?
> Avoid that by marking the of_node as reused since the aux bridge
> device is reusing the parent of_node.
>
> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/aux-bridge.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/bridge/aux-bridge.c b/drivers/gpu/drm/bridge/aux-bridge.c
> index b29980f95379ec7af873ed6e0fb79a9abb663c7b..ec3299ae49d6abdb75ee98acfe0682f1acc459f8 100644
> --- a/drivers/gpu/drm/bridge/aux-bridge.c
> +++ b/drivers/gpu/drm/bridge/aux-bridge.c
> @@ -60,6 +60,7 @@ int drm_aux_bridge_register(struct device *parent)
> adev->dev.parent = parent;
> adev->dev.of_node = of_node_get(parent->of_node);
> adev->dev.release = drm_aux_bridge_release;
> + adev->dev.of_node_reused = true;
Please use the intended device_set_of_node_from_dev() helper for this.
> ret = auxiliary_device_init(adev);
> if (ret) {
Johan
