Messages in this thread Patch in this message | | | From | Gerald BAEZA <> | Subject | [PATCH 2/5] dt-bindings: perf: stm32: ddrperfm support | Date | Mon, 29 Apr 2019 10:03:37 +0000 |
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The DDRPERFM is the DDR Performance Monitor embedded in STM32MP1 SOC.
This documentation indicates how to enable stm32-ddr-pmu driver on DDRPERFM peripheral, via the device tree.
Signed-off-by: Gerald Baeza <gerald.baeza@st.com> --- .../devicetree/bindings/perf/stm32-ddr-pmu.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt
diff --git a/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt b/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt new file mode 100644 index 0000000..dabc4c7 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt @@ -0,0 +1,18 @@ +* STM32 DDR Performance Monitor (DDRPERFM) + +Required properties: +- compatible: must be "st,stm32-ddr-pmu". +- reg: physical address and length of the registers set. +- clocks: list of phandles and specifiers to all input clocks listed in + clock-names property. +- clock-names: "bus" corresponds to the DDRPERFM bus clock and "ddr" to + the DDR frequency. + +Example: + ddrperfm: perf@5a007000 { + compatible = "st,stm32-ddr-pmu"; + reg = <0x5a007000 0x400>; + clocks = <&rcc DDRPERFM>, <&rcc PLL2_R>; + clock-names = "bus", "ddr"; + }; + -- 2.7.4
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