new file mode 100644
@@ -0,0 +1,133 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/perf/xlnx,axi-perf-monitor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Axi Performance Monitor
+
+maintainers:
+ - Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
+
+properties:
+ compatible:
+ const: xlnx,axi-perf-monitor
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ xlnx,profile:
+ description:
+ Has profile mode support. Event counting in profile mode consists of a
+ fixed number of accumulators for each AXI4/AXI3/AXI4-Lite slot. All the
+ events that can be counted are detected and given to the accumulator
+ which calculates the aggregate value. There is no selection of events,
+ and in this mode, event counting is done only on AXI4/AXI3/AXI4-Lite
+ monitor slots.
+ type: boolean
+
+ xlnx,trace:
+ description:
+ Has trace mode support. In trace mode, the APM provides event logging in a
+ reduced dynamic configuration. It captures the specified AXI events,
+ external events and the time stamp difference between two successive
+ events into the streaming FIFO. The selection of events to be captured
+ is set through parameter configuration. Streaming agents are not
+ supported in trace mode.
+ type: boolean
+
+ xlnx,num-monitor-slots:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Number of monitor slots.
+ minimum: 1
+ maximum: 8
+
+ xlnx,event-count:
+ description:
+ Has event counting capability..
+ type: boolean
+
+ xlnx,event-log:
+ type: boolean
+ description:
+ Has event logging support.
+
+ xlnx,have-sampled-metric-cnt:
+ type: boolean
+ description:
+ Sampled metric counters enabled in APM.
+
+ xlnx,metric-count-width:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [32, 64]
+ description:
+ Metric Counter width.
+
+ xlnx,metric-count-scale:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [1, 2, 4, 8]
+ description:
+ Metric Counter scale factor.
+
+ xlnx,num-of-counters:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Number of counters in APM.
+
+ xlnx,metrics-sample-count-width:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [32, 64]
+ description:
+ Sampled metric counter width.
+
+ xlnx,global-count-width:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [32, 64]
+ description:
+ Global Clock counter width.
+
+ xlnx,id-filter-32bit:
+ description: APM is in 32-bit mode.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ pmu@44a00000 {
+ compatible = "xlnx,axi-perf-monitor";
+ interrupt-parent = <&axi_intc_1>;
+ interrupts = <GIC_SPI 123 IRQ_TYPE_EDGE_RISING>;
+ reg = <0x44a00000 0x1000>;
+ clocks = <&clkc 15>;
+ xlnx,num-monitor-slots = <4>;
+ xlnx,event-count;
+ xlnx,event-log;
+ xlnx,have-sampled-metric-cnt;
+ xlnx,num-of-counters = <8>;
+ xlnx,metric-count-width = <32>;
+ xlnx,metrics-sample-count-width = <32>;
+ xlnx,global-count-width = <32>;
+ xlnx,metric-count-scale = <1>;
+ xlnx,id-filter-32bit;
+ };
The LogiCORE IP AXI Performance Monitor core enables AXI system performance measurement for multiple slots (AXI4/AXI3/ AXI4-Stream/AXI4-Lite) activity. Add the devicetree binding for xilinx APM. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com> --- Changes in v2: - Use boolean for the values xlnx,enable-profile , xlnx,enable-trace and xlnx,enable-event-count - Update the file name - use generic node name pmu .../bindings/perf/xlnx,axi-perf-monitor.yaml | 133 ++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/xlnx,axi-perf-monitor.yaml