[PATCH v2 2/5] dt-bindings: perf: stm32: ddrperfm support
From: Gerald BAEZA <hidden>
Date: 2019-05-20 15:27:53
Also in:
linux-devicetree, linux-doc, lkml
Subsystem:
arm pmu profiling and debugging, open firmware and flattened device tree bindings, the rest · Maintainers:
Will Deacon, Mark Rutland, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../devicetree/bindings/perf/stm32-ddr-pmu.txt | 20 ++++++++++++++++++++ 1 file changed, 20 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..9d36209
--- /dev/null
+++ b/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt@@ -0,0 +1,20 @@ +* 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. +- resets: phandle to the reset controller and DDRPERFM reset specifier + +Example: + ddrperfm: perf@5a007000 { + compatible = "st,stm32-ddr-pmu"; + reg = <0x5a007000 0x400>; + clocks = <&rcc DDRPERFM>, <&rcc PLL2_R>; + clock-names = "bus", "ddr"; + resets = <&rcc DDRPERFM_R>; + }; +
--
2.7.4
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