dt-binding: remoteproc: Add QTI ADSP PIL bindings

Qualcomm Technology Inc. ADSP Peripheral Image Loader

This document defines the binding for a component that loads and boots firmware

on the Qualcomm Technology Inc. ADSP Hexagon core.

- compatible:

	Usage: required

	Value type: <string>

	Definition: must be one of:

		    "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 8 phandle and clock specifier pairs for the adsp.

- clock-names:

	Usage: required

	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_aon", "lpass_ahbs_aon_cbcr",

		    "lpass_ahbm_aon_cbcr", "qdsp6ss_xo", "qdsp6ss_sleep"

		    and "qdsp6ss_core".

- 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 2 reset-controller for the adsp.

- reset-names:

        Usage: required

        Value type: <stringlist>

        Definition: must be "pdc_sync" and "cc_lpass"

- 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 lpass halt register.

- memory-region:

	Usage: required

	Value type: <phandle>

	Definition: reference to the reserved-memory for the ADSP

- qcom,smem-states:

	Usage: required

	Value type: <phandle>

	Definition: reference to the smem state for requesting the ADSP 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 ADSP.

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_AUDIO_WRAPPER_AON_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_aon",

			"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";

	};