diff --git a/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml b/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml new file mode 100644 index 000000000000..50f46a6898b1 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/amlogic,g12-ddr-pmu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic G12 DDR performance monitor + +maintainers: + - Jiucheng Xu + +description: | + Amlogic G12 series SoC integrate DDR bandwidth monitor. + A timer is inside and can generate interrupt when timeout. + The bandwidth is counted in the timer ISR. Different platform + has different subset of event format attribute. + +properties: + compatible: + enum: + - amlogic,g12a-ddr-pmu + - amlogic,g12b-ddr-pmu + - amlogic,sm1-ddr-pmu + + reg: + items: + - description: DMC bandwidth register space. + - description: DMC PLL register space. + + interrupts: + items: + - description: The IRQ of the inside timer timeout. + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include + pmu { + #address-cells=<2>; + #size-cells=<2>; + + pmu@ff638000 { + compatible = "amlogic,g12a-ddr-pmu"; + reg = <0x0 0xff638000 0x0 0x100>, + <0x0 0xff638c00 0x0 0x100>; + interrupts = ; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 1157873ccc99..b82e6b670629 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1099,6 +1099,7 @@ L: linux-amlogic@lists.infradead.org S: Supported W: http://www.amlogic.com F: Documentation/admin-guide/perf/meson-ddr-pmu.rst +F: Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml F: drivers/perf/amlogic/ F: include/soc/amlogic/