linux-kernel - [PATCH v2 2/2] devicetree: bindings: Add the binding doc for xilinx APM

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Date:   Mon,  9 Dec 2019 19:53:25 +0530
From:   shubhrajyoti.datta@...il.com
To:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:     michal.simek@...inx.com, gregkh@...uxfoundation.org,
        robh+dt@...nel.org,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH v2 2/2] devicetree: bindings: Add the binding doc for xilinx APM

From: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>

Add the devicetree binding for xilinx APM.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
v2:
patch added

 .../devicetree/bindings/perf/xilinx_apm.txt        | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/perf/xilinx_apm.txt

diff --git a/Documentation/devicetree/bindings/perf/xilinx_apm.txt b/Documentation/devicetree/bindings/perf/xilinx_apm.txt
new file mode 100644
index 0000000..a11c82e
--- /dev/null
+++ b/Documentation/devicetree/bindings/perf/xilinx_apm.txt
@@ -0,0 +1,44 @@
+* Xilinx AXI Performance monitor IP
+
+Required properties:
+- compatible: "xlnx,axi-perf-monitor"
+- interrupts: Should contain APM interrupts.
+- interrupt-parent: Must be core interrupt controller.
+- reg: Should contain APM registers location and length.
+- xlnx,enable-profile: Enables the profile mode.
+- xlnx,enable-trace: Enables trace mode.
+- xlnx,num-monitor-slots: Maximum number of slots in APM.
+- xlnx,enable-event-count: Enable event count.
+- xlnx,enable-event-log: Enable event logging.
+- xlnx,have-sampled-metric-cnt:Sampled metric counters enabled in APM.
+- xlnx,num-of-counters: Number of counters in APM
+- xlnx,metric-count-width: Metric Counter width (32/64)
+- xlnx,metrics-sample-count-width: Sampled metric counter width
+- xlnx,global-count-width: Global Clock counter width
+- clocks: Input clock specifier.
+
+Optional properties:
+- xlnx,id-filter-32bit: APM is in 32-bit mode
+
+Example:
+++++++++
+
+apm: apm@...00000 {
+    compatible = "xlnx,axi-perf-monitor";
+    interrupt-parent = <&axi_intc_1>;
+    interrupts = <1 2>;
+    reg = <0x44a00000 0x1000>;
+    clocks = <&clkc 15>;
+    xlnx,enable-profile = <0>;
+    xlnx,enable-trace = <0>;
+    xlnx,num-monitor-slots = <4>;
+    xlnx,enable-event-count = <1>;
+    xlnx,enable-event-log = <1>;
+    xlnx,have-sampled-metric-cnt = <1>;
+    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;
+};
-- 
2.1.1