Merge tag 'rproc-v4.14' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "This adds and improves remoteproc support for TI DA8xx/OMAP-L13x DSP,
  TI Keystone 66AK2G DSP and iMX6SX/7D Cortex M4 coprocessors. It
  introduces the Qualcomm restart notifier and a few fixes"

* tag 'rproc-v4.14' of git://github.com/andersson/remoteproc:
  remoteproc: Introduce rproc handle accessor for children
  remoteproc: qcom: Make ssr_notifiers local
  remoteproc: Stop subdevices in reverse order
  remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver
  remoteproc: dt: Provide bindings for iMX6SX/7D Remote Processor Controller driver
  remoteproc: qcom: Use PTR_ERR_OR_ZERO
  remoteproc: st: explicitly request exclusive reset control
  remoteproc: qcom: explicitly request exclusive reset control
  remoteproc/keystone: explicitly request exclusive reset control
  remoteproc/keystone: Add support for Keystone 66AK2G SOCs
  remoteproc/davinci: Add device tree support for OMAP-L138 DSP
  dt-bindings: remoteproc: Add bindings for Davinci DSP processors
  remoteproc/davinci: Add support to parse internal memories
  remoteproc/davinci: Switch to platform_get_resource_byname()
  remoteproc: make device_type const
  soc: qcom: GLINK SSR notifier
  remoteproc: qcom: Add support for SSR notifications
  remoteproc: Merge __rproc_boot() with rproc_boot()

Documentation/devicetree/bindings/remoteproc/imx-rproc.txt

@@ -0,0 +1,33 @@
+NXP iMX6SX/iMX7D Co-Processor Bindings
+----------------------------------------
+
+This binding provides support for ARM Cortex M4 Co-processor found on some
+NXP iMX SoCs.
+
+Required properties:
+- compatible		Should be one of:
+				"fsl,imx7d-cm4"
+				"fsl,imx6sx-cm4"
+- clocks		Clock for co-processor (See: ../clock/clock-bindings.txt)
+- syscon		Phandle to syscon block which provide access to
+			System Reset Controller
+
+Optional properties:
+- memory-region		list of phandels to the reserved memory regions.
+			(See: ../reserved-memory/reserved-memory.txt)
+
+Example:
+	m4_reserved_sysmem1: cm4@80000000 {
+		reg = <0x80000000 0x80000>;
+	};
+
+	m4_reserved_sysmem2: cm4@81000000 {
+		reg = <0x81000000 0x80000>;
+	};
+
+	imx7d-cm4 {
+		compatible	= "fsl,imx7d-cm4";
+		memory-region	= <&m4_reserved_sysmem1>, <&m4_reserved_sysmem2>;
+		syscon		= <&src>;
+		clocks		= <&clks IMX7D_ARM_M4_ROOT_CLK>;
+	};

Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt

@@ -0,0 +1,86 @@
+TI Davinci DSP devices
+=======================
+
+Binding status: Unstable - Subject to changes for DT representation of clocks
+			   and resets
+
+The TI Davinci family of SoCs usually contains a TI DSP Core sub-system that
+is used to offload some of the processor-intensive tasks or algorithms, for
+achieving various system level goals.
+
+The processor cores in the sub-system usually contain additional sub-modules
+like L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory
+controller, a dedicated local power/sleep controller etc. The DSP processor
+core used in Davinci SoCs is usually a C674x DSP CPU.
+
+DSP Device Node:
+================
+Each DSP Core sub-system is represented as a single DT node.
+
+Required properties:
+--------------------
+The following are the mandatory properties:
+
+- compatible:		Should be one of the following,
+			    "ti,da850-dsp" for DSPs on OMAP-L138 SoCs
+
+- reg:			Should contain an entry for each value in 'reg-names'.
+			Each entry should have the memory region's start address
+			and the size of the region, the representation matching
+			the parent node's '#address-cells' and '#size-cells' values.
+
+- reg-names:		Should contain strings with the following names, each
+			representing a specific internal memory region or a
+			specific register space,
+			     "l2sram", "l1pram", "l1dram", "host1cfg", "chipsig_base"
+
+- interrupts: 		Should contain the interrupt number used to receive the
+			interrupts from the DSP. The value should follow the
+			interrupt-specifier format as dictated by the
+			'interrupt-parent' node.
+
+- memory-region:	phandle to the reserved memory node to be associated
+			with the remoteproc device. The reserved memory node
+			can be a CMA memory node, and should be defined as
+			per the bindings in
+			Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
+
+Optional properties:
+--------------------
+- interrupt-parent:	phandle to the interrupt controller node. This property
+			is needed if the device node hierarchy doesn't have an
+			interrupt controller.
+
+
+Example:
+--------
+
+	/* DSP Reserved Memory node */
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		dsp_memory_region: dsp-memory@c3000000 {
+			compatible = "shared-dma-pool";
+			reg = <0xc3000000 0x1000000>;
+			reusable;
+		};
+	};
+
+	/* DSP node */
+	{
+		dsp: dsp@11800000 {
+			compatible = "ti,da850-dsp";
+			reg = <0x11800000 0x40000>,
+			      <0x11e00000 0x8000>,
+			      <0x11f00000 0x8000>,
+			      <0x01c14044 0x4>,
+			      <0x01c14174 0x8>;
+			reg-names = "l2sram", "l1pram", "l1dram", "host1cfg",
+				    "chipsig";
+			interrupt-parent = <&intc>;
+			interrupts = <28>;
+			memory-region = <&dsp_memory_region>;
+		};
+	};

Documentation/devicetree/bindings/remoteproc/ti,keystone-rproc.txt

@@ -26,6 +26,7 @@ The following are the mandatory properties:
 			    "ti,k2hk-dsp" for DSPs on Keystone 2 66AK2H/K SoCs
 			    "ti,k2l-dsp" for DSPs on Keystone 2 66AK2L SoCs
 			    "ti,k2e-dsp" for DSPs on Keystone 2 66AK2E SoCs
+			    "ti,k2g-dsp" for DSPs on Keystone 2 66AK2G SoCs
 
 - reg:			Should contain an entry for each value in 'reg-names'.
 			Each entry should have the memory region's start address
@@ -37,20 +38,18 @@ The following are the mandatory properties:
 			should be defined in this order,
 			     "l2sram", "l1pram", "l1dram"
 
-- clocks: 		Should contain the device's input clock, and should be
-			defined as per the bindings in,
-			Documentation/devicetree/bindings/clock/keystone-gate.txt
-
 - ti,syscon-dev:	Should be a pair of the phandle to the Keystone Device
 			State Control node, and the register offset of the DSP
 			boot address register within that node's address space.
 
 - resets:		Should contain the phandle to the reset controller node
 			managing the resets for this device, and a reset
-			specifier. Please refer to the following reset bindings
-			for the reset argument specifier as per SoC,
+			specifier. Please refer to either of the following reset
+			bindings for the reset argument specifier as per SoC,
 			Documentation/devicetree/bindings/reset/ti-syscon-reset.txt
-			    for 66AK2HK/66AK2L/66AK2E SoCs
+			    for 66AK2HK/66AK2L/66AK2E SoCs or,
+			Documentation/devicetree/bindings/reset/ti,sci-reset.txt
+			    for 66AK2G SoCs
 
 - interrupt-parent:	Should contain a phandle to the Keystone 2 IRQ controller
 			IP node that is used by the ARM CorePac processor to
@@ -75,6 +74,22 @@ The following are the mandatory properties:
 			The gpio device to be used is as per the bindings in,
 			Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt
 
+SoC-specific Required properties:
+---------------------------------
+The following are mandatory properties for Keystone 2 66AK2HK, 66AK2L and 66AK2E
+SoCs only:
+
+- clocks: 		Should contain the device's input clock, and should be
+			defined as per the bindings in,
+			Documentation/devicetree/bindings/clock/keystone-gate.txt
+
+The following are mandatory properties for Keystone 2 66AK2G SoCs only:
+
+- power-domains:	Should contain a phandle to a PM domain provider node
+			and an args specifier containing the DSP device id
+			value. This property is as per the binding,
+			Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
+
 Optional properties:
 --------------------
 
@@ -85,8 +100,10 @@ Optional properties:
 			Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
 
 
-Example:
---------
+Examples:
+---------
+
+1.
 	/* 66AK2H/K DSP aliases */
 	aliases {
 		rproc0 = &dsp0;
@@ -131,3 +148,41 @@ Example:
 		};
 
 	};
+
+2.
+	/* 66AK2G DSP alias */
+	aliases {
+		rproc0 = &dsp0;
+	};
+
+	/* 66AK2G DSP memory node */
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		dsp_common_memory: dsp-common-memory@81f800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00000008 0x1f800000 0x00000000 0x800000>;
+			reusable;
+		};
+	};
+
+	/* 66AK2G DSP node */
+	soc {
+		dsp0: dsp@10800000 {
+			compatible = "ti,k2g-dsp";
+			reg = <0x10800000 0x00100000>,
+			      <0x10e00000 0x00008000>,
+			      <0x10f00000 0x00008000>;
+			reg-names = "l2sram", "l1pram", "l1dram";
+			power-domains = <&k2g_pds 0x0046>;
+			ti,syscon-dev = <&devctrl 0x40>;
+			resets = <&k2g_reset 0x0046 0x1>;
+			interrupt-parent = <&kirq0>;
+			interrupts = <0 8>;
+			interrupt-names = "vring", "exception";
+			kick-gpios = <&dspgpio0 27 0>;
+			memory-region = <&dsp_common_memory>;
+		};
+	};

drivers/remoteproc/Kconfig

@@ -12,6 +12,15 @@ config REMOTEPROC
 
 if REMOTEPROC
 
+config IMX_REMOTEPROC
+	tristate "IMX6/7 remoteproc support"
+	depends on SOC_IMX6SX || SOC_IMX7D
+	help
+	  Say y here to support iMX's remote processors (Cortex M4
+	  on iMX7D) via the remote processor framework.
+
+	  It's safe to say N here.
+
 config OMAP_REMOTEPROC
 	tristate "OMAP remoteproc support"
 	depends on HAS_DMA

drivers/remoteproc/Makefile

@@ -8,6 +8,7 @@ remoteproc-y				+= remoteproc_debugfs.o
 remoteproc-y				+= remoteproc_sysfs.o
 remoteproc-y				+= remoteproc_virtio.o
 remoteproc-y				+= remoteproc_elf_loader.o
+obj-$(CONFIG_IMX_REMOTEPROC)		+= imx_rproc.o
 obj-$(CONFIG_OMAP_REMOTEPROC)		+= omap_remoteproc.o
 obj-$(CONFIG_WKUP_M3_RPROC)		+= wkup_m3_rproc.o
 obj-$(CONFIG_DA8XX_REMOTEPROC)		+= da8xx_remoteproc.o