Add the dt-binding documentation for the Samsung specific Platform Performance Monitoring Unit (PPMU) driver which provides performance statistics for AXI bus masters such as MFC. Signed-off-by: Ravi Patel <ravi.patel@xxxxxxxxxxx> Signed-off-by: Vivek Yadav <vivek.2311@xxxxxxxxxxx> --- .../bindings/perf/samsung,ppmu-v2.yaml | 62 +++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/samsung,ppmu-v2.yaml diff --git a/Documentation/devicetree/bindings/perf/samsung,ppmu-v2.yaml b/Documentation/devicetree/bindings/perf/samsung,ppmu-v2.yaml new file mode 100644 index 000000000000..d137d06b7034 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/samsung,ppmu-v2.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/samsung,ppmu-v2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung PPMU (Platform Performance Monitoring Unit) + +maintainers: + - Vivek Yadav <vivek.2311@xxxxxxxxxxx> + - Ravi Patel <ravi.patel@xxxxxxxxxxx> + +description: + PPMU (Platform Performance Monitoring Unit) provides performance statistics + such as bandwidth, read and write request, transactions count for AXI masters + like MFC. + +properties: + compatible: + const: samsung,ppmu-v2 + + reg: + maxItems: 1 + description: Memory-mapped register address + + clocks: + items: + - description: AXI bus clock + - description: Peripheral clock + + clock-names: + items: + - const: aclk + - const: pclk + + interrupts: + items: + - description: Overflow interrupt for Counters + - description: Conditional Interrupt Generation (CIG) + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/fsd-clk.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + ppmu@12840000 { + compatible = "samsung,ppmu-v2"; + reg = <0x12840000 0x1000>; + interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clock_mfc MFC_PPMU_MFCD0_IPCLKPORT_ACLK>, + <&clock_mfc MFC_PPMU_MFCD0_IPCLKPORT_PCLK>; + clock-names = "aclk", "pclk"; + }; -- 2.49.0
