Add binding documentation for the Amlogic G12 series DDR performance monitor unit. Signed-off-by: Jiucheng Xu <jiucheng.xu@xxxxxxxxxxx> --- Changes v2 -> v3: - Remove oneOf - Add descriptions - Fix compiling warning Changes v1 -> v2: - Rename file, from aml_ddr_pmu.yaml to amlogic,g12_ddr_pmu.yaml - Delete "model", "dmc_nr", "chann_nr" new properties - Fix compiling error --- .../bindings/perf/amlogic,g12_ddr_pmu.yaml | 51 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/amlogic,g12_ddr_pmu.yaml 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..961656d4db6e --- /dev/null +++ b/Documentation/devicetree/bindings/perf/amlogic,g12_ddr_pmu.yaml @@ -0,0 +1,51 @@ +# 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 <jiucheng.xu@xxxxxxxxxxx> + +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. + +properties: + compatible: + items: + - enum: + - amlogic,g12b-ddr-pmu + - amlogic,g12a-ddr-pmu + - amlogic,sm1-ddr-pmu + + reg: + items: + - description: Physical address of DMC bandwidth register + and size of the configuration address space. + - description: Physical address of DMC PLL register and + size of the configuration address space. + + interrupts: + items: + - description: The IRQ of the inside timer timeout. + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + ddr_pmu@ff638000 { + compatible = "amlogic,g12a-ddr-pmu"; + reg = <0xff638000 0x100 + 0xff638c00 0x100>; + interrupts = <GIC_SPI 52 IRQ_TYPE_EDGE_RISING>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 8ee68e699e6d..67c2c9e8c4ea 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1055,6 +1055,7 @@ M: Jiucheng Xu <jiucheng.xu@xxxxxxxxxxx> 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/ -- 2.25.1
