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Re: [XEN][PATCH v10 08/20] xen/device-tree: Add device_tree_find_node_by_path() to find nodes in device tree
- To: Vikram Garhwal <vikram.garhwal@xxxxxxx>
- From: Henry Wang <Henry.Wang@xxxxxxx>
- Date: Mon, 28 Aug 2023 01:59:08 +0000
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- Delivery-date: Mon, 28 Aug 2023 01:59:33 +0000
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- Thread-topic: [XEN][PATCH v10 08/20] xen/device-tree: Add device_tree_find_node_by_path() to find nodes in device tree
Hi Vikram,
> On Aug 25, 2023, at 16:02, Vikram Garhwal <vikram.garhwal@xxxxxxx> wrote:
>
> Add device_tree_find_node_by_path() to find a matching node with path for a
> dt_device_node.
>
> Reason behind this function:
> Each time overlay nodes are added using .dtbo, a new fdt(memcpy of
> device_tree_flattened) is created and updated with overlay nodes. This
> updated fdt is further unflattened to a dt_host_new. Next, we need to find
> the overlay nodes in dt_host_new, find the overlay node's parent in dt_host
> and add the nodes as child under their parent in the dt_host. Thus we need
> this function to search for node in different unflattened device trees.
>
> Also, make dt_find_node_by_path() static inline.
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@xxxxxxx>
Reviewed-by: Henry Wang <Henry.Wang@xxxxxxx>
Kind regards,
Henry
>
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