ti_sci_msg_c...uery_fw_caps(9)

✨ ti_sci_msg_cmd_query_fw_caps(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 — this is the page for ti_sci_msg_cmd_query_fw_caps, and yes the header truncates her as ti_sci_msg_c...uery_fw_caps(9) (iconic, honestly). She’s here to get the FW/SoC capabilities, and she is not doing it quietly. 🎀

🌸 NAME 🌸

ti_sci_msg_cmd_query_fw_caps — Get the FW/SoC capabilities. 💅

✨ SYNOPSIS ✨

int ti_sci_msg_cmd_query_fw_caps (const struct ti_sci_handle *handle ,
       u64 *fw_caps );

🎀 ARGUMENTS 🎀

• handle — Pointer to TI SCI handle. That’s your entry ticket to the TI SCI situation, bestie. 🫶
• fw_caps — Each bit in fw_caps indicating one FW/SOC capability. So every bit is a little capability flag doing its thing. ✨

🦋 DESCRIPTION 🦋

Okay so this function checks if the firmware supports any optional low power modes. That’s the vibe check. Old revisions of TIFS (< 08.04) will NACK the request, which results in -ENODEV being returned. Not a drill, bestie — old TIFS said no and you get that error. 😭

💅 RETURN 💅

0 if all went well, else returns appropriate error value. Slay when it’s zero, investigate when it’s not. 💖

🔥 SEE ALSO 🔥

Kernel file ./drivers/firmware/ti_sci.c — plus the whole ti_sci cinematic universe, no cap:

• struct ti_sci_xfer(9)
• struct ti_sci_xfers_info(9)
• struct ti_sci_desc(9)
• struct ti_sci_irq(9)
• struct ti_sci_info(9)
• ti_sci_debug_show(9)
• ti_sci_debugfs_create(9)
• ti_sci_dump_header_dbg(9)
• ti_sci_rx_callback(9)
• ti_sci_get_one_xfer(9)
• ti_sci_put_one_xfer(9)
• ti_sci_do_xfer(9)
• ti_sci_cmd_get_revision(9)
• ti_sci_is_response_ack(9)
• ti_sci_set_device_state(9)
• ti_sci_get_device_state(9)
• ti_sci_cmd_get_device(9)
• ti_sci_cmd_get_device_exclusive(9)
• ti_sci_cmd_idle_device(9)
• ti_sci_cmd_idle_device_exclusive(9)
• ti_sci_cmd_put_device(9)
• ti_sci_cmd_dev_is_valid(9)
• ti_sci_cmd_dev_get_clcnt(9)
• ti_sci_cmd_dev_is_idle(9)
• ti_sci_cmd_dev_is_stop(9)
• ti_sci_cmd_dev_is_on(9)
• ti_sci_cmd_dev_is_trans(9)
• ti_sci_cmd_set_device_resets(9)
• ti_sci_cmd_get_device_resets(9)
• ti_sci_set_clock_state(9)
• ti_sci_cmd_get_clock_state(9)
• ti_sci_cmd_get_clock(9)
• ti_sci_cmd_idle_clock(9)
• ti_sci_cmd_put_clock(9)
• ti_sci_cmd_clk_is_auto(9)
• ti_sci_cmd_clk_is_on(9)
• ti_sci_cmd_clk_is_off(9)
• ti_sci_cmd_clk_set_parent(9)
• ti_sci_cmd_clk_get_parent(9)
• ti_sci_cmd_clk_get_num_parents(9)
• ti_sci_cmd_clk_get_match_freq(9)
• ti_sci_cmd_clk_set_freq(9)
• ti_sci_cmd_clk_get_freq(9)
• ti_sci_cmd_prepare_sleep(9)
• ti_sci_cmd_set_io_isolation(9)
• ti_sci_msg_cmd_lpm_wake_reason(9)
• ti_sci_cmd_set_device_constraint(9)
• ti_sci_cmd_set_latency_constraint(9)
• ti_sci_cmd_lpm_abort(9)
• ti_sci_get_resource_range(9)
• ti_sci_cmd_get_resource_range(9)
• ti_sci_cmd_get_resource_range_from_shost(9)
• ti_sci_manage_irq(9)
• ti_sci_irq_hash(9)
• ti_sci_irq_equal(9)
• ti_sci_set_irq(9)
• ti_sci_free_irq(9)
• ti_sci_cmd_set_irq(9)
• ti_sci_cmd_set_event_map(9)
• ti_sci_cmd_free_irq(9)
• ti_sci_cmd_free_event_map(9)
• ti_sci_cmd_rm_ring_cfg(9)
• ti_sci_cmd_rm_psil_pair(9)
• ti_sci_cmd_rm_psil_unpair(9)
• ti_sci_cmd_rm_udmap_tx_ch_cfg(9)
• ti_sci_cmd_rm_udmap_rx_ch_cfg(9)
• ti_sci_cmd_rm_udmap_rx_flow_cfg(9)
• ti_sci_cmd_proc_request(9)
• ti_sci_cmd_proc_release(9)
• ti_sci_cmd_proc_handover(9)
• ti_sci_cmd_proc_set_config(9)
• ti_sci_cmd_proc_set_control(9)
• ti_sci_cmd_proc_get_status(9)
• ti_sci_get_handle(9)
• ti_sci_put_handle(9)
• devm_ti_sci_get_handle(9)
• ti_sci_get_by_phandle(9)
• devm_ti_sci_get_by_phandle(9)
• ti_sci_get_free_resource(9)
• ti_sci_release_resource(9)
• ti_sci_get_num_resources(9)
• devm_ti_sci_get_resource_sets(9)
• devm_ti_sci_get_of_resource(9)
• devm_ti_sci_get_resource(9)

💖 signed off from ./drivers/firmware, October 2026, in the Kernel API Manual. ti_sci_msg_c...uery_fw_caps(9) out. 🫶