STRUCT RZA1_PORT(9)

💅 struct rza1_port(9)

okay bestie, so this is a page from the Kernel API Manual (the 9 is the section, iykyk) and it's all about struct rza1_port — literally just the lil' data structure that describes a pin port 🎀 like, one port, one struct, no cap.

---

✨ SYNOPSIS ✨

here's the whole shape of it, exactly as it lives:

struct rza1_port {
    spinlock_t lock;
    unsigned int id;
    void __iomem *base;
    struct pinctrl_pin_desc *pins;
 };

that's it, that's the whole vibe 🌸 four members, all iconic in their own way.

---

🫶 Members

okay let's go member by member, group-chat style 💖

• lock — a spinlock_t and its whole job is to protect access to HW registers. she's the bouncer at the club 🔥
• id — an unsigned int that holds the port number. just her little name tag 💅
• base — a void __iomem * with the logical address base. where the memory actually is, so to speak ✨
• pins — a struct pinctrl_pin_desc *, and these are the pins sitting on this port. her entourage 🎀

---

🌈 Description

so like, the whole point of this thing? it's mostly useful to lock register writes per-bank and not globally 👑 that's the tea. per-bank locking, not one giant scary global lock, periodt.

---

🦋 SEE ALSO

go read the kernel file ./drivers/pinctrl/renesas/pinctrl-rza1.c, and then meet the whole friend group 😭:

• struct rza1_mux_conf(9)
• struct rza1_pinctrl(9)
• rza1_pin_reset(9)
• rza1_pin_set_direction(9)
• rza1_pin_mux_single(9)
• rza1_gpio_request(9)
• rza1_gpio_free(9)
• rza1_gpio_get(9)
• rza1_dt_node_pin_count(9)
• rza1_parse_pinmux_node(9)
• rza1_dt_node_to_map(9)
• rza1_set_mux(9)
• rza1_parse_gpiochip(9)
• rza1_gpio_register(9)
• rza1_pinctrl_register(9)

---

ngl bestie, that's the whole page. no hidden lore, no surprise options, we ate and left no crumbs 🍓

and that's a wrap, babes 💜 this came out of ./drivers/pinctrl/renesas, dated October 2026 — thanks for coming to my ted talk, mwah 🧚✨