Document the requirements for the CMN-600 DT binding. The internal
topology is almost entirely discoverable by walking a tree of ID
registers, but sadly both the starting point for that walk and the
exact format of those registers are configuration-dependent and not
discoverable from some sane fixed location. Oh well.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
DTSes with new i.MX 8M SoCs introduce their own compatibles so add them
to fix dtbs_check warnings like:
arch/arm64/boot/dts/freescale/imx8mm-evk.dt.yaml: ddr-pmu@3d800000:
compatible:0: 'fsl,imx8mm-ddr-pmu' is not one of ['fsl,imx8-ddr-pmu', 'fsl,imx8m-ddr-pmu', 'fsl,imx8mp-ddr-pmu']
From schema: Documentation/devicetree/bindings/perf/fsl-imx-ddr.yaml
arch/arm64/boot/dts/freescale/imx8mm-evk.dt.yaml: ddr-pmu@3d800000:
compatible: ['fsl,imx8mm-ddr-pmu', 'fsl,imx8m-ddr-pmu'] is too long
arch/arm64/boot/dts/freescale/imx8mm-evk.dt.yaml: ddr-pmu@3d800000:
compatible: Additional items are not allowed ('fsl,imx8m-ddr-pmu' was unexpected)
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Add binding documentation for the imx8qxp DDR performance monitor unit.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
[will: Removed trailing newline]
Signed-off-by: Will Deacon <will.deacon@arm.com>
The arm-ccn driver is purely a perf driver for the CCN PMU, not a bus
driver in the sense of the other residents of drivers/bus/, so let's
move it to the appropriate place for SoC PMU drivers. Not to mention
moving the documentation accordingly as well.
Acked-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Driver providing perf backend for the SoC-wide PMU hardware found
in APM X-Gene SoCs.
Signed-off-by: Tai Nguyen <ttnguyen@apm.com>
Acked-by: Rob Herring <robh@kernel.org>
