| Message ID | 20201227105449.11452-2-roger.lu@mediatek.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | soc: mediatek: SVS: introduce MTK SVS engine | expand |
On Sun, Dec 27, 2020 at 06:54:43PM +0800, Roger Lu wrote: > Document the binding for enabling mtk svs on MediaTek SoC. > > Signed-off-by: Roger Lu <roger.lu@mediatek.com> > --- > .../bindings/soc/mediatek/mtk-svs.yaml | 75 +++++++++++++++++++ > 1 file changed, 75 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml > > diff --git a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml > new file mode 100644 > index 000000000000..9c7da0acd82f > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml > @@ -0,0 +1,75 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/soc/mediatek/mtk-svs.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Introduce MTK SVS engine > + > +maintainers: > + - Matthias Brugger <matthias.bgg@gmail.com> > + - Kevin Hilman <khilman@kernel.org> > + - Nishanth Menon <nm@ti.com> > + > +description: |+ > + The Smart Voltage Scaling(SVS) engine is a piece of hardware > + which has several controllers(banks) for calculating suitable > + voltage to different power domains(CPU/GPU/CCI) according to > + chip process corner, temperatures and other factors. Then DVFS > + driver could apply SVS bank voltage to PMIC/Buck. > + > +properties: > + compatible: > + enum: > + - mediatek,mt8183-svs > + > + reg: > + description: Address range of the MTK SVS controller. Drop. That doesn't really add anything. > + maxItems: 1 > + > + interrupts: > + description: IRQ for the MTK SVS controller. Drop. > + maxItems: 1 > + > + clocks: > + description: Main clock for MTK SVS controller to work. Drop, but you need: maxItems: 1 > + > + clock-names: > + const: main > + > + nvmem-cells: > + maxItems: 2 > + description: > + Phandle to the calibration data provided by a nvmem device. Drop. > + > + nvmem-cell-names: > + items: > + - const: svs-calibration-data > + - const: t-calibration-data > + > +required: > + - compatible > + - reg > + - interrupts > + - clocks > + - clock-names > + - nvmem-cells > + - nvmem-cell-names > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/mt8183-clk.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + svs: svs@1100b000 { > + compatible = "mediatek,mt8183-svs"; > + reg = <0 0x1100b000 0 0x1000>; > + interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_LOW>; > + clocks = <&infracfg CLK_INFRA_THERM>; > + clock-names = "main"; > + nvmem-cells = <&svs_calibration>, <&thermal_calibration>; > + nvmem-cell-names = "svs-calibration-data", "t-calibration-data"; > + }; > -- > 2.18.0 >
diff --git a/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml new file mode 100644 index 000000000000..9c7da0acd82f --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/mediatek/mtk-svs.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Introduce MTK SVS engine + +maintainers: + - Matthias Brugger <matthias.bgg@gmail.com> + - Kevin Hilman <khilman@kernel.org> + - Nishanth Menon <nm@ti.com> + +description: |+ + The Smart Voltage Scaling(SVS) engine is a piece of hardware + which has several controllers(banks) for calculating suitable + voltage to different power domains(CPU/GPU/CCI) according to + chip process corner, temperatures and other factors. Then DVFS + driver could apply SVS bank voltage to PMIC/Buck. + +properties: + compatible: + enum: + - mediatek,mt8183-svs + + reg: + description: Address range of the MTK SVS controller. + maxItems: 1 + + interrupts: + description: IRQ for the MTK SVS controller. + maxItems: 1 + + clocks: + description: Main clock for MTK SVS controller to work. + + clock-names: + const: main + + nvmem-cells: + maxItems: 2 + description: + Phandle to the calibration data provided by a nvmem device. + + nvmem-cell-names: + items: + - const: svs-calibration-data + - const: t-calibration-data + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - nvmem-cells + - nvmem-cell-names + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/mt8183-clk.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + svs: svs@1100b000 { + compatible = "mediatek,mt8183-svs"; + reg = <0 0x1100b000 0 0x1000>; + interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_LOW>; + clocks = <&infracfg CLK_INFRA_THERM>; + clock-names = "main"; + nvmem-cells = <&svs_calibration>, <&thermal_calibration>; + nvmem-cell-names = "svs-calibration-data", "t-calibration-data"; + };
Document the binding for enabling mtk svs on MediaTek SoC. Signed-off-by: Roger Lu <roger.lu@mediatek.com> --- .../bindings/soc/mediatek/mtk-svs.yaml | 75 +++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml