[V2,0/3] perf/imx_ddr: Add system PMU support

Message

Joakim Zhang May 20, 2020, 2:56 a.m. UTC

The patch set adds system PMU support for i.MX8 DDR Perf.

The sysfs location for userspace to get the PMU identifier under the
directory:
	/sys/bus/event_source/devices/<PMU DEVICE>/identifier

ChangeLogs:
V1 -> V2:
	*add property in dt instead of changing compatible string.

Joakim Zhang (3):
  bindings: perf: imx8_ddr: add identifier property
  perf/imx_ddr: Add system PMU identifier for userspace
  arm64: dts: imx8/8mm/8mn/8mq: add identifier for DDR perf

 .../devicetree/bindings/perf/fsl-imx-ddr.txt  |  3 ++
 arch/arm64/boot/dts/freescale/imx8mm.dtsi     |  1 +
 arch/arm64/boot/dts/freescale/imx8mn.dtsi     |  1 +
 arch/arm64/boot/dts/freescale/imx8mq.dtsi     |  1 +
 arch/arm64/boot/dts/freescale/imx8qxp.dtsi    |  1 +
 drivers/perf/fsl_imx8_ddr_perf.c              | 29 +++++++++++++++++++
 6 files changed, 36 insertions(+)