| Message ID | 1597302475-15484-3-git-send-email-hector.yuan@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | viresh kumar |
| Headers | show |
| Series | [v2,1/2] cpufreq: mediatek-hw: Add support for Mediatek cpufreq HW driver | expand |
On Thu, Aug 13, 2020 at 03:07:55PM +0800, Hector Yuan wrote: > From: "Hector.Yuan" <hector.yuan@mediatek.com> > > Add devicetree bindings for MediaTek HW driver. > > Signed-off-by: Hector.Yuan <hector.yuan@mediatek.com> > --- > .../bindings/cpufreq/cpufreq-mediatek-hw.yaml | 61 ++++++++++++++++++++ > 1 file changed, 61 insertions(+) > create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > > diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > new file mode 100644 > index 0000000..59bb24e > --- /dev/null > +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > @@ -0,0 +1,61 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: MediaTek's CPUFREQ Bindings > + > +maintainers: > + - Hector Yuan <hector.yuan@mediatek.com> > + > +description: > + CPUFREQ HW is a hardware engine used by MediaTek > + SoCs to manage frequency in hardware. It is capable of controlling frequency > + for multiple clusters. > + > +properties: > + compatible: > + const: mediatek,cpufreq-hw > + > + reg: > + minItems: 1 > + maxItems: 2 > + description: | > + Addresses and sizes for the memory of the HW bases in each frequency domain. > + > + reg-names: > + items: > + - const: "freq-domain0" > + - const: "freq-domain1" Not all that useful of a name given it's based on the index. > + description: | > + Frequency domain name. > + > + "#freq-domain-cells": > + const: 1 > + description: | > + Number of cells in a freqency domain specifier. What's this for? > + > +required: > + - compatible > + - reg > + - reg-names > + - "#freq-domain-cells" > + > +additionalProperties: false > + > +examples: > + - | > + soc { > + #address-cells = <2>; > + #size-cells = <2>; > + > + cpufreq_hw: cpufreq@11bc00 { > + compatible = "mediatek,cpufreq-hw"; > + reg = <0 0x11bc10 0 0x8c>, > + <0 0x11bca0 0 0x8c>; > + reg-names = "freq-domain0", "freq-domain1"; > + #freq-domain-cells = <1>; > + }; > + }; > + > -- > 1.7.9.5
On Mon, 2020-08-24 at 20:04 -0600, Rob Herring wrote: > On Thu, Aug 13, 2020 at 03:07:55PM +0800, Hector Yuan wrote: > > From: "Hector.Yuan" <hector.yuan@mediatek.com> > > > > Add devicetree bindings for MediaTek HW driver. > > > > Signed-off-by: Hector.Yuan <hector.yuan@mediatek.com> > > --- > > .../bindings/cpufreq/cpufreq-mediatek-hw.yaml | 61 ++++++++++++++++++++ > > 1 file changed, 61 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > > > > diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > > new file mode 100644 > > index 0000000..59bb24e > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml > > @@ -0,0 +1,61 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: MediaTek's CPUFREQ Bindings > > + > > +maintainers: > > + - Hector Yuan <hector.yuan@mediatek.com> > > + > > +description: > > + CPUFREQ HW is a hardware engine used by MediaTek > > + SoCs to manage frequency in hardware. It is capable of controlling frequency > > + for multiple clusters. > > + > > +properties: > > + compatible: > > + const: mediatek,cpufreq-hw > > + > > + reg: > > + minItems: 1 > > + maxItems: 2 > > + description: | > > + Addresses and sizes for the memory of the HW bases in each frequency domain. > > + > > + reg-names: > > + items: > > + - const: "freq-domain0" > > + - const: "freq-domain1" > > Not all that useful of a name given it's based on the index. Let me explain this index is about to map cpus to each frequency control domain. Will update details usage in V3. Thank you. > > + description: | > > + Frequency domain name. > > + > > + "#freq-domain-cells": > > + const: 1 > > + description: | > > + Number of cells in a freqency domain specifier. > > What's this for? > Like the previous mentioned, this is for index mapping. will update in V3. Thank you. > > + > > +required: > > + - compatible > > + - reg > > + - reg-names > > + - "#freq-domain-cells" > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + soc { > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + cpufreq_hw: cpufreq@11bc00 { > > + compatible = "mediatek,cpufreq-hw"; > > + reg = <0 0x11bc10 0 0x8c>, > > + <0 0x11bca0 0 0x8c>; > > + reg-names = "freq-domain0", "freq-domain1"; > > + #freq-domain-cells = <1>; > > + }; > > + }; > > + > > -- > > 1.7.9.5
diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml new file mode 100644 index 0000000..59bb24e --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml @@ -0,0 +1,61 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek's CPUFREQ Bindings + +maintainers: + - Hector Yuan <hector.yuan@mediatek.com> + +description: + CPUFREQ HW is a hardware engine used by MediaTek + SoCs to manage frequency in hardware. It is capable of controlling frequency + for multiple clusters. + +properties: + compatible: + const: mediatek,cpufreq-hw + + reg: + minItems: 1 + maxItems: 2 + description: | + Addresses and sizes for the memory of the HW bases in each frequency domain. + + reg-names: + items: + - const: "freq-domain0" + - const: "freq-domain1" + description: | + Frequency domain name. + + "#freq-domain-cells": + const: 1 + description: | + Number of cells in a freqency domain specifier. + +required: + - compatible + - reg + - reg-names + - "#freq-domain-cells" + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + cpufreq_hw: cpufreq@11bc00 { + compatible = "mediatek,cpufreq-hw"; + reg = <0 0x11bc10 0 0x8c>, + <0 0x11bca0 0 0x8c>; + reg-names = "freq-domain0", "freq-domain1"; + #freq-domain-cells = <1>; + }; + }; +