===================================================================
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Debug Control and Status Register (DCSR) Binding
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Copyright 2011 Freescale Semiconductor Inc.
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NOTE: The bindings described in this document are preliminary and subject
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to change. Some of the compatible strings that contain only generic names
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may turn out to be inappropriate, or need additional properties to describe
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the integration of the block with the rest of the chip.
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=====================================================================
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Debug Control and Status Register Memory Map
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Description
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This node defines the base address and range for the
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defined DCSR Memory Map. Child nodes will describe the individual
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debug blocks defined within this memory space.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr" and "simple-bus".
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The DCSR space exists in the memory-mapped bus.
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- #address-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Defines the number of cells
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or representing physical addresses in child nodes.
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- #size-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Defines the number of cells
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or representing the size of physical addresses in
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child nodes.
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- ranges
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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range of the DCSR space.
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EXAMPLE
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dcsr: dcsr@f00000000 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "fsl,dcsr", "simple-bus";
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ranges = <0x00000000 0xf 0x00000000 0x01008000>;
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};
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=====================================================================
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Event Processing Unit
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This node represents the region of DCSR space allocated to the EPU
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr-epu"
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- interrupts
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Usage: required
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Value type: <prop_encoded-array>
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Definition: Specifies the interrupts generated by the EPU.
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The value of the interrupts property consists of three
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interrupt specifiers. The format of the specifier is defined
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by the binding document describing the node's interrupt parent.
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The EPU counters can be configured to assert the performance
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monitor interrupt signal based on either counter overflow or value
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match. Which counter asserted the interrupt is captured in an EPU
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Counter Interrupt Status Register (EPCPUISR).
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The EPU unit can also be configured to assert either or both of
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two interrupt signals based on debug event sources within the SoC.
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The interrupt signals are epu_xt_int0 and epu_xt_int1.
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Which event source asserted the interrupt is captured in an EPU
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Interrupt Status Register (EPISR0,EPISR1).
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Interrupt numbers are listed in order (perfmon, event0, event1).
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-epu@0 {
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compatible = "fsl,dcsr-epu";
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interrupts = <52 2 0 0
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84 2 0 0
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85 2 0 0>;
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interrupt-parent = <&mpic>;
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reg = <0x0 0x1000>;
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};
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=======================================================================
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Nexus Port Controller
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This node represents the region of DCSR space allocated to the NPC
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr-npc"
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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The Nexus Port controller occupies two regions in the DCSR space
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with distinct functionality.
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The first register range describes the Nexus Port Controller
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control and status registers.
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The second register range describes the Nexus Port Controller
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internal trace buffer. The NPC trace buffer is a small memory buffer
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which stages the nexus trace data for transmission via the Aurora port
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or to a DDR based trace buffer. In some configurations the NPC trace
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buffer can be the only trace buffer used.
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EXAMPLE
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dcsr-npc {
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compatible = "fsl,dcsr-npc";
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reg = <0x1000 0x1000 0x1000000 0x8000>;
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};
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=======================================================================
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Nexus Concentrator
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This node represents the region of DCSR space allocated to the NXC
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr-nxc"
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-nxc@2000 {
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compatible = "fsl,dcsr-nxc";
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reg = <0x2000 0x1000>;
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};
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=======================================================================
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CoreNet Debug Controller
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This node represents the region of DCSR space allocated to
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the CoreNet Debug controller.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr-corenet"
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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The CoreNet Debug controller occupies two regions in the DCSR space
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with distinct functionality.
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The first register range describes the CoreNet Debug Controller
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functionalty to perform transaction and transaction attribute matches.
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The second register range describes the CoreNet Debug Controller
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functionalty to trigger event notifications and debug traces.
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EXAMPLE
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dcsr-corenet {
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compatible = "fsl,dcsr-corenet";
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reg = <0x8000 0x1000 0xB0000 0x1000>;
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};
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=======================================================================
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Data Path Debug controller
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This node represents the region of DCSR space allocated to
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the DPAA Debug Controller. This controller controls debug configuration
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for the QMAN and FMAN blocks.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include both an identifier specific to the SoC
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or Debug IP of the form "fsl,<soc>-dcsr-dpaa" in addition to the
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generic compatible string "fsl,dcsr-dpaa".
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-dpaa@9000 {
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compatible = "fsl,p4080-dcsr-dpaa", "fsl,dcsr-dpaa";
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reg = <0x9000 0x1000>;
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};
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=======================================================================
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OCeaN Debug controller
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This node represents the region of DCSR space allocated to
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the OCN Debug Controller.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include both an identifier specific to the SoC
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or Debug IP of the form "fsl,<soc>-dcsr-ocn" in addition to the
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generic compatible string "fsl,dcsr-ocn".
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-ocn@11000 {
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compatible = "fsl,p4080-dcsr-ocn", "fsl,dcsr-ocn";
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reg = <0x11000 0x1000>;
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};
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=======================================================================
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DDR Controller Debug controller
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This node represents the region of DCSR space allocated to
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the OCN Debug Controller.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,dcsr-ddr"
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- dev-handle
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Usage: required
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Definition: A phandle to associate this debug node with its
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component controller.
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-ddr@12000 {
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compatible = "fsl,dcsr-ddr";
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dev-handle = <&ddr1>;
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reg = <0x12000 0x1000>;
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};
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=======================================================================
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Nexus Aurora Link Controller
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This node represents the region of DCSR space allocated to
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the NAL Controller.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include both an identifier specific to the SoC
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or Debug IP of the form "fsl,<soc>-dcsr-nal" in addition to the
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generic compatible string "fsl,dcsr-nal".
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-nal@18000 {
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compatible = "fsl,p4080-dcsr-nal", "fsl,dcsr-nal";
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reg = <0x18000 0x1000>;
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};
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=======================================================================
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Run Control and Power Management
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This node represents the region of DCSR space allocated to
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the RCPM Debug Controller. This functionlity is limited to the
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control the debug operations of the SoC and cores.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include both an identifier specific to the SoC
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or Debug IP of the form "fsl,<soc>-dcsr-rcpm" in addition to the
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generic compatible string "fsl,dcsr-rcpm".
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-rcpm@22000 {
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compatible = "fsl,p4080-dcsr-rcpm", "fsl,dcsr-rcpm";
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reg = <0x22000 0x1000>;
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};
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=======================================================================
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Core Service Bridge Proxy
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This node represents the region of DCSR space allocated to
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the Core Service Bridge Proxies.
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There is one Core Service Bridge Proxy device for each CPU in the system.
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This functionlity provides access to the debug operations of the CPU.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include both an identifier specific to the cpu
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of the form "fsl,dcsr-<cpu>-sb-proxy" in addition to the
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generic compatible string "fsl,dcsr-cpu-sb-proxy".
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- cpu-handle
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Usage: required
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Definition: A phandle to associate this debug node with its cpu.
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address
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offset and length of the DCSR space registers of the device
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configuration block.
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EXAMPLE
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dcsr-cpu-sb-proxy@40000 {
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compatible = "fsl,dcsr-e500mc-sb-proxy",
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"fsl,dcsr-cpu-sb-proxy";
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cpu-handle = <&cpu0>;
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reg = <0x40000 0x1000>;
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};
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dcsr-cpu-sb-proxy@41000 {
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compatible = "fsl,dcsr-e500mc-sb-proxy",
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"fsl,dcsr-cpu-sb-proxy";
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cpu-handle = <&cpu1>;
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reg = <0x41000 0x1000>;
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};
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=======================================================================
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