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perf vendor events arm64: Add i.MX91 DDR Performance Monitor metrics

Add JSON metrics for i.MX91 DDR Performance Monitor.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: festevam@gmail.com
Cc: conor+dt@kernel.org
Cc: krzk+dt@kernel.org
Cc: robh@kernel.org
Cc: shawnguo@kernel.org
Cc: will@kernel.org
Cc: james.clark@linaro.org
Cc: mike.leach@linaro.org
Cc: leo.yan@linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: imx@lists.linux.dev
Cc: Frank.li@nxp.com
Cc: john.g.garry@oracle.com
Cc: kernel@pengutronix.de
Cc: s.hauer@pengutronix.de
Cc: devicetree@vger.kernel.org
Link: https://lore.kernel.org/r/20240924061251.3387850-3-xu.yang_2@nxp.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

authored by

Xu Yang and committed by
Namhyung Kim e3b2949e 7449a4d6

+35
+9
tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/ddrc.json
··· 1 + [ 2 + { 3 + "BriefDescription": "ddr cycles event", 4 + "EventCode": "0x00", 5 + "EventName": "imx91_ddr.cycles", 6 + "Unit": "imx9_ddr", 7 + "Compat": "imx91" 8 + } 9 + ]
+26
tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/metrics.json
··· 1 + [ 2 + { 3 + "BriefDescription": "bandwidth usage for lpddr4 evk board", 4 + "MetricName": "imx91_bandwidth_usage.lpddr4", 5 + "MetricExpr": "(((( imx9_ddr0@ddrc_pm_0@ ) * 2 * 8 ) + (( imx9_ddr0@ddrc_pm_3@ + imx9_ddr0@ddrc_pm_5@ + imx9_ddr0@ddrc_pm_7@ + imx9_ddr0@ddrc_pm_9@ - imx9_ddr0@ddrc_pm_2@ - imx9_ddr0@ddrc_pm_4@ - imx9_ddr0@ddrc_pm_6@ - imx9_ddr0@ddrc_pm_8@ ) * 32 )) / duration_time) / (2400 * 1000000 * 2)", 6 + "ScaleUnit": "1e2%", 7 + "Unit": "imx9_ddr", 8 + "Compat": "imx91" 9 + }, 10 + { 11 + "BriefDescription": "bytes all masters read from ddr", 12 + "MetricName": "imx91_ddr_read.all", 13 + "MetricExpr": "( imx9_ddr0@ddrc_pm_0@ ) * 2 * 8", 14 + "ScaleUnit": "9.765625e-4KB", 15 + "Unit": "imx9_ddr", 16 + "Compat": "imx91" 17 + }, 18 + { 19 + "BriefDescription": "bytes all masters write to ddr", 20 + "MetricName": "imx91_ddr_write.all", 21 + "MetricExpr": "( imx9_ddr0@ddrc_pm_3@ + imx9_ddr0@ddrc_pm_5@ + imx9_ddr0@ddrc_pm_7@ + imx9_ddr0@ddrc_pm_9@ - imx9_ddr0@ddrc_pm_2@ - imx9_ddr0@ddrc_pm_4@ - imx9_ddr0@ddrc_pm_6@ - imx9_ddr0@ddrc_pm_8@ ) * 32", 22 + "ScaleUnit": "9.765625e-4KB", 23 + "Unit": "imx9_ddr", 24 + "Compat": "imx91" 25 + } 26 + ]