zynqmp_pm_request_node(9)

🎀 zynqmp_pm_request_node(9) 🎀

okay so welcome to the Kernel API Manual, bestie — this is the page for zynqmp_pm_request_node(9), and it is literally about asking firmware for a node with the capabilities you want. Think of it as sliding into firmware's DMs before you touch the node, because every master must request the node before using it. no cap. 💅

🌸 NAME 🌸

zynqmp_pm_request_node — Request a node with specific capabilities

✨ SYNOPSIS ✨

here is the exact signature, character for character:

int zynqmp_pm_request_node (const u32 node , const u32 capabilities ,
       const u32 qos , const enum zynqmp_pm_request_ack ack );

🫶 ARGUMENTS 🫶

• node — Node ID of the slave
• capabilities — Requested capabilities of the slave
• qos — Quality of service (not supported)
• ack — Flag to specify whether acknowledge is requested

💖 DESCRIPTION 💖

okay so a master uses this function to request a particular node from the firmware. and every master must request the node before using it — like, that is the whole rule, bestie. request first, then use the node. 🦋

🌈 RETURN 🌈

Returns status, either success or error+reason. so yeah, you get a status back — success, or error+reason. no mystery, no vibes-based guessing. 💀

🔗 SEE ALSO 🔗

the whole friend group is here, and yes, you need all of them:

• Kernel file ./drivers/firmware/xilinx/zynqmp.c
• struct zynqmp_devinfo(9)
• struct pm_api_feature_data(9)
• zynqmp_pm_ret_code(9)
• do_fw_call_smc(9)
• do_fw_call_hvc(9)
• zynqmp_pm_feature(9)
• zynqmp_pm_is_function_supported(9)
• zynqmp_pm_invoke_fw_fn(9)
• zynqmp_pm_invoke_fn(9)
• zynqmp_pm_get_api_version(9)
• zynqmp_pm_get_chipid(9)
• zynqmp_pm_get_family_info(9)
• zynqmp_pm_get_sip_svc_version(9)
• zynqmp_pm_get_trustzone_version(9)
• get_set_conduit_method(9)
• zynqmp_pm_query_data(9)
• zynqmp_pm_clock_enable(9)
• zynqmp_pm_clock_disable(9)
• zynqmp_pm_clock_getstate(9)
• zynqmp_pm_clock_setdivider(9)
• zynqmp_pm_clock_getdivider(9)
• zynqmp_pm_clock_setparent(9)
• zynqmp_pm_clock_getparent(9)
• zynqmp_pm_set_pll_frac_mode(9)
• zynqmp_pm_get_pll_frac_mode(9)
• zynqmp_pm_set_pll_frac_data(9)
• zynqmp_pm_get_pll_frac_data(9)
• zynqmp_pm_set_sd_tapdelay(9)
• zynqmp_pm_sd_dll_reset(9)
• zynqmp_pm_ospi_mux_select(9)
• zynqmp_pm_write_ggs(9)
• zynqmp_pm_read_ggs(9)
• zynqmp_pm_write_pggs(9)
• zynqmp_pm_read_pggs(9)
• zynqmp_pm_set_boot_health_status(9)
• zynqmp_pm_reset_assert(9)
• zynqmp_pm_reset_get_status(9)
• zynqmp_pm_fpga_load(9)
• zynqmp_pm_fpga_get_status(9)
• zynqmp_pm_fpga_get_config_status(9)
• zynqmp_pm_pinctrl_request(9)
• zynqmp_pm_pinctrl_release(9)
• zynqmp_pm_pinctrl_set_function(9)
• zynqmp_pm_pinctrl_get_config(9)
• zynqmp_pm_pinctrl_set_config(9)
• zynqmp_pm_bootmode_read(9)
• zynqmp_pm_bootmode_write(9)
• zynqmp_pm_init_finalize(9)
• zynqmp_pm_set_suspend_mode(9)
• zynqmp_pm_release_node(9)
• zynqmp_pm_get_rpu_mode(9)
• zynqmp_pm_set_rpu_mode(9)
• zynqmp_pm_set_tcm_config(9)
• zynqmp_pm_get_node_status(9)
• zynqmp_pm_get_rpu_node_status(9)
• zynqmp_pm_force_pwrdwn(9)
• zynqmp_pm_request_wake(9)
• zynqmp_pm_start_rpu(9)
• zynqmp_pm_stop_rpu(9)
• zynqmp_pm_set_requirement(9)
• zynqmp_pm_load_pdi(9)
• zynqmp_pm_efuse_access(9)
• zynqmp_pm_register_notifier(9)
• zynqmp_pm_system_shutdown(9)
• zynqmp_pm_set_feature_config(9)
• zynqmp_pm_get_feature_config(9)
• zynqmp_pm_sec_read_reg(9)
• zynqmp_pm_sec_mask_write_reg(9)
• zynqmp_pm_set_sd_config(9)
• zynqmp_pm_set_gem_config(9)
• struct zynqmp_pm_shutdown_scope(9)
• zynqmp_pm_is_shutdown_scope_valid(9)
• zynqmp_clear_pm_state(9)

and that is the whole iconic page, bestie. cute sign-off time: source/version is ./drivers/firmware/xilinx, dated October 2026, and the page is zynqmp_pm_request_node(9). mwah 💋✨