remoteproc updates for v4.8

Introduce remoteproc driver for controlling the modem/DSP Hexagon CPU found in a multitude of Qualcomm platform. Also cleans up a race condition/potential leak during registration of remoteprocs and includes devicetree bindings in the MAINTAINERS entry. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJXmQY5AAoJEAsfOT8Nma3FzGMP/jq1S/DLm2vRIw547Ev04LQ0 4suaKkovLMhGp2xsGsz50gxpV1YBo4MTI3DYXBP/kr4U3aCHIw+1mXwiJ1pWsv30 4MWVheD5hLeyK0JMFiEPwmI22zlX81YA0WPOimu82WUAyqQ86Zcix1KPVfHbq5SP 80aiX64BZu0PXUFAhhBUaW4qy/2nj4gcvN6Ied8LCwDTmCIBSE2LsjxaxKvxLIgA OMWpMGfz6jIleC4kqFDs2qL4rhQh/5cRm+QOntlehOsJfrp7QN1yaJ0WahsQWRjk AQjweQn7zgbzj5VPcpqCx9K4NhOa1Y/vZM/i3EPlYUKwV3cJnk5BgsyB1zyXd2s5 +Ul42y8pPTeBgwKisT6BhWLQE13uYViuM4N+rqCX1sH4c5wTzScCDz5tC300Plj9 omXiJmLRnAJ6soQGEnoYl6S7+e873hqOuHFvqCfkxFWVOlJ5blODOFAHXC/8Gwch cKG2P0Hpp8KZNljgBhIvU7AHRWOfeojZvezx5epb902rZKLXrvgKOOkbAwklr9wu lAKdbS/lunPIA5Lbom4db7zOAPa8QWNHpHGsCc4MDMY6hcoGA5FZALIdEdqimnro rrG52apH2EKyWPpsLtJ0vglpmFUz1euabQCGkR1roYvDjXxN8SpC08mcX92r4XOM cFxetFZDcF4f98PG96AY =XlWX -----END PGP SIGNATURE----- Merge tag 'rproc-v4.8' of git://github.com/andersson/remoteproc Pull remoteproc updates from Bjorn Andersson: "Introduce remoteproc driver for controlling the modem/DSP Hexagon CPU found in a multitude of Qualcomm platform. Also cleans up a race condition/potential leak during registration of remoteprocs and includes devicetree bindings in the MAINTAINERS entry" * tag 'rproc-v4.8' of git://github.com/andersson/remoteproc: remoteproc: qcom: hexagon: Clean up mpss validation remoteproc: qcom: remove redundant dev_err call in q6v5_init_mem() remoteproc: qcom: Driver for the self-authenticating Hexagon v5 dt-binding: remoteproc: Introduce Hexagon loader binding remoteproc: Fix potential race condition in rproc_add MAINTAINERS: Add file patterns for remoteproc device tree bindings
2026-10-29 19:21:31 -04:00 · 2016-07-28 15:26:24 -07:00 · 2016-07-28 15:26:24 -07:00 · ce8c891c34
commit ce8c891c34
parent 10eec60ce7 72beb49070
8 changed files with 1264 additions and 7 deletions
--- a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
@ -0,0 +1,137 @@
+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", "rmb";
+
+		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>;
+		};
+	};