This document defines the binding for a component that loads firmware
and control the life cycle of a self-authenticating Qualcomm Hexagon
core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
.../devicetree/bindings/remoteproc/qcom,q6v5.txt | 138 +++++++++++++++++++++
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+Qualcomm Hexagon Peripheral Image Loader
+
+This document defines the binding for a component that loads and boots firmware
+on the Qualcomm Hexagon core.
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be one of:
+ "qcom,q6v5-pil"
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: must specify the base address and size of the qdsp6 and
+ rmb register blocks
+
+- reg-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: must be "q6dsp" and "rmb"
+
+- 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: <phandle>
+ Definition: reference to the iface, bus and mem clocks to be held on
+ behalf of the booting of the Hexagon core
+
+- clock-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: must be "iface", "bus", "mem"
+
+- resets:
+ Usage: required
+ Value type: <phandle>
+ Definition: reference to the reset-controller for the modem sub-system
+
+- reset-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: must be "mss_restart"
+
+- cx-supply:
+- mss-supply:
+- mx-supply:
+- pll-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: reference to the regulators to be held on behalf of the
+ booting of the Hexagon core
+
+- 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"
+
+- qcom,halt-regs:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: a phandle reference to a syscon representing TCSR followed
+ by the three offsets within syscon for q6, modem and nc
+ halt registers.
+
+= SUBNODES:
+The Hexagon node must contain two subnodes, named "mba" and "mpss" representing
+the memory regions used by the Hexagon firmware. Each sub-node must contain:
+
+- memory-region:
+ Usage: required
+ Value type: <phandle>
+ Definition: reference to the reserved-memory for the region
+
+= EXAMPLE
+The following example describes the resources needed to boot control the
+Hexagon, as it is found on MSM8974 boards.
+
+ modem-rproc@fc880000 {
+ compatible = "qcom,q6v5-pil";
+ reg = <0xfc880000 0x100>,
+ <0xfc820000 0x020>;
+ reg-names = "qdsp6_base", "rmb_base";
+
+ interrupts-extended = <&intc 0 24 1>,
+ <&modem_smp2p_in 0 0>,
+ <&modem_smp2p_in 1 0>,
+ <&modem_smp2p_in 2 0>,
+ <&modem_smp2p_in 3 0>;
+ interrupt-names = "wdog",
+ "fatal",
+ "ready",
+ "handover",
+ "stop-ack";
+
+ clocks = <&gcc GCC_MSS_Q6_BIMC_AXI_CLK>,
+ <&gcc GCC_MSS_CFG_AHB_CLK>,
+ <&gcc GCC_BOOT_ROM_AHB_CLK>;
+ clock-names = "iface", "bus", "mem";
+
+ qcom,halt-regs = <&tcsr_mutex_block 0x1180 0x1200 0x1280>;
+
+ resets = <&gcc GCC_MSS_RESTART>;
+ reset-names = "mss_restart";
+
+ cx-supply = <&pm8841_s2>;
+ mss-supply = <&pm8841_s3>;
+ mx-supply = <&pm8841_s1>;
+ pll-supply = <&pm8941_l12>;
+
+ qcom,smem-states = <&modem_smp2p_out 0>;
+ qcom,smem-state-names = "stop";
+
+ mba {
+ memory-region = <&mba_region>;
+ };
+
+ mpss {
+ memory-region = <&mpss_region>;
+ };
+ };
+
--
2.5.0
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