of_graph_get_next_port(9)

💅 of_graph_get_next_port(9) — from the Kernel API Manual, bestie

okay so this one is a little kernel function that walks through device-tree graph port nodes, like flipping through your fave accounts one at a time ✨ it lives in the Kernel API Manual, and if you're messing with of_graph stuff you're gonna want this in your back pocket, no cap.

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🌸 SYNOPSIS 🌸

struct device_node * of_graph_get_next_port (const struct device_node
*parent , struct device_node *prev );

there she is. two args, one pointer back. slay.

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🎀 ARGUMENTS 🎀

• parent — pointer to the parent device node, or the parent ports node. either one works, we love flexibility 🫶
• prev — the previous port node, or NULL to get the first one. pass NULL when you're starting out, like a clean slate moment 💜

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🦋 DESCRIPTION 🦋

so here's the vibe: parent device node can be used as the parent whether the device node has a ports node or not. not optional, not conditional, it just handles both cases for you. it'll work the same as a ports0 node. periodt 💅

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✨ RETURN ✨

a 'port' node pointer with refcount incremented. and heads up — the refcount of the passed prev node is decremented. so like, the count moves with you as you walk the list, iykyk 🔥

don't forget the refcount bookkeeping bestie, that's the whole point of this function 😭

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👑 SEE ALSO 👑

• Kernel file ./drivers/of/property.c
• of_property_read_bool(9)
• of_graph_is_present(9)
• of_property_count_elems_of_size(9)
• of_find_property_value_of_size(9)
• of_property_read_u8_index(9)
• of_property_read_u16_index(9)
• of_property_read_u32_index(9)
• of_property_read_u64_index(9)
• of_property_read_variable_u8_array(9)
• of_property_read_variable_u16_array(9)
• of_property_read_variable_u32_array(9)
• of_property_read_u64(9)
• of_property_read_variable_u64_array(9)
• of_property_read_string(9)
• of_property_match_string(9)
• of_property_read_string_helper(9)
• of_graph_parse_endpoint(9)
• of_graph_get_port_by_id(9)
• of_graph_get_next_port_endpoint(9)
• of_graph_get_next_endpoint(9)
• of_graph_get_endpoint_by_regs(9)
• of_graph_get_remote_endpoint(9)
• of_graph_get_port_parent(9)
• of_graph_get_remote_port_parent(9)
• of_graph_get_remote_port(9)
• of_graph_get_endpoint_count(9)
• of_graph_get_port_count(9)
• of_graph_get_remote_node(9)
• parse_prop_cells(9)
• parse_suffix_prop_cells(9)
• struct supplier_bindings(9)
• of_link_property(9)

literally the whole of_graph friend group, go say hi 🌈

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and that's the page!! 🎀 this lil section of the manual ships out of ./drivers/of, dated October 2026, and yeah — it's of_graph_get_next_port(9), bestie, that's the whole title. go get those port nodes 💖🧚💀