xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/remoteproc/qcom,hexagon-v56.txt

Qualcomm Technology Inc. Hexagon v56 Peripheral Image Loader

This document defines the binding for a component that loads and boots firmware
on the Qualcomm Technology Inc. Hexagon v56 core.

- compatible:
	Usage: required
	Value type: <string>
	Definition: must be one of:
		    "qcom,qcs404-cdsp-pil",
		    "qcom,sdm845-adsp-pil"

- reg:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: must specify the base address and size of the qdsp6ss register

- interrupts-extended:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: must list the watchdog, fatal IRQs ready, handover and
		    stop-ack IRQs

- interrupt-names:
	Usage: required
	Value type: <stringlist>
	Definition: must be "wdog", "fatal", "ready", "handover", "stop-ack"

- clocks:
	Usage: required
	Value type: <prop-encoded-array>
	Definition:  List of phandles and clock specifier pairs for the Hexagon,
		     per clock-names below.

- clock-names:
	Usage: required for SDM845 ADSP
	Value type: <stringlist>
	Definition: List of clock input name strings sorted in the same
		    order as the clocks property. Definition must have
		    "xo", "sway_cbcr", "lpass_ahbs_aon_cbcr",
		    "lpass_ahbm_aon_cbcr", "qdsp6ss_xo", "qdsp6ss_sleep"
		    and "qdsp6ss_core".

- clock-names:
	Usage: required for QCS404 CDSP
	Value type: <stringlist>
	Definition: List of clock input name strings sorted in the same
		    order as the clocks property. Definition must have
		    "xo", "sway", "tbu", "bimc", "ahb_aon", "q6ss_slave",
		    "q6ss_master", "q6_axim".

- power-domains:
	Usage: required
	Value type: <phandle>
	Definition: reference to cx power domain node.

- resets:
	Usage: required
	Value type: <phandle>
	Definition: reference to the list of resets for the Hexagon.

- reset-names:
        Usage: required for SDM845 ADSP
        Value type: <stringlist>
        Definition: must be "pdc_sync" and "cc_lpass"

- reset-names:
        Usage: required for QCS404 CDSP
        Value type: <stringlist>
        Definition: must be "restart"

- qcom,halt-regs:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: a phandle reference to a syscon representing TCSR followed
		    by the offset within syscon for Hexagon halt register.

- memory-region:
	Usage: required
	Value type: <phandle>
	Definition: reference to the reserved-memory for the firmware

- qcom,smem-states:
	Usage: required
	Value type: <phandle>
	Definition: reference to the smem state for requesting the Hexagon to
		    shut down

- qcom,smem-state-names:
	Usage: required
	Value type: <stringlist>
	Definition: must be "stop"


= SUBNODES
The adsp node may have an subnode named "glink-edge" that describes the
communication edge, channels and devices related to the Hexagon.
See ../soc/qcom/qcom,glink.txt for details on how to describe these.

= EXAMPLE
The following example describes the resources needed to boot control the
ADSP, as it is found on SDM845 boards.

	remoteproc@17300000 {
		compatible = "qcom,sdm845-adsp-pil";
		reg = <0x17300000 0x40c>;

		interrupts-extended = <&intc GIC_SPI 162 IRQ_TYPE_EDGE_RISING>,
			<&adsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
			<&adsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
			<&adsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
			<&adsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
		interrupt-names = "wdog", "fatal", "ready",
			"handover", "stop-ack";

		clocks = <&rpmhcc RPMH_CXO_CLK>,
			<&gcc GCC_LPASS_SWAY_CLK>,
			<&lpasscc LPASS_Q6SS_AHBS_AON_CLK>,
			<&lpasscc LPASS_Q6SS_AHBM_AON_CLK>,
			<&lpasscc LPASS_QDSP6SS_XO_CLK>,
			<&lpasscc LPASS_QDSP6SS_SLEEP_CLK>,
			<&lpasscc LPASS_QDSP6SS_CORE_CLK>;
		clock-names = "xo", "sway_cbcr",
			"lpass_ahbs_aon_cbcr",
			"lpass_ahbm_aon_cbcr", "qdsp6ss_xo",
			"qdsp6ss_sleep", "qdsp6ss_core";

		power-domains = <&rpmhpd SDM845_CX>;

		resets = <&pdc_reset PDC_AUDIO_SYNC_RESET>,
			 <&aoss_reset AOSS_CC_LPASS_RESTART>;
		reset-names = "pdc_sync", "cc_lpass";

		qcom,halt-regs = <&tcsr_mutex_regs 0x22000>;

		memory-region = <&pil_adsp_mem>;

		qcom,smem-states = <&adsp_smp2p_out 0>;
		qcom,smem-state-names = "stop";
	};