| Message ID | 20230809023045.1870410-2-nm@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dt-bindings: opp/cpufreq: Convert ti-cpufreq to json schema | expand |
On Aug 08, 2023 at 21:30:44 -0500, Nishanth Menon wrote: > Rename ti-omap5-opp-supply to be bit more generic omap-opp-supply and > convert the free text binding to json-schema. > > Signed-off-by: Nishanth Menon <nm@ti.com> > --- > Changes since V2: > - None. > > V2: https://lore.kernel.org/r/20230801233341.1416552-2-nm@ti.com > V1: https://lore.kernel.org/all/20230724153911.1376830-5-nm@ti.com/ > .../bindings/opp/ti,omap-opp-supply.yaml | 103 ++++++++++++++++++ > .../bindings/opp/ti-omap5-opp-supply.txt | 63 ----------- > 2 files changed, 103 insertions(+), 63 deletions(-) > create mode 100644 Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > delete mode 100644 Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt > > diff --git a/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > new file mode 100644 > index 000000000000..4db80e418829 > --- /dev/null > +++ b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > @@ -0,0 +1,103 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/opp/ti,omap-opp-supply.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Texas Instruments OMAP compatible OPP supply > + > +description: > + OMAP5, DRA7, and AM57 family of SoCs have Class0 AVS eFuse registers which > + contain data that can be used to adjust voltages programmed for some of their > + supplies for more efficient operation. This binding provides the information > + needed to read these values and use them to program the main regulator during > + an OPP transitions. > + > + Also, some supplies may have an associated vbb-supply which is an Adaptive Body > + Bias regulator which much be transitioned in a specific sequence with regards s/much/must ? > + to the vdd-supply and clk when making an OPP transition. By supplying two > + regulators to the device that will undergo OPP transitions we can make use > + of the multi regulator binding that is part of the OPP core described Existing txt seems to have: part of the OPP core described here [1] Why get rid of the reference "[1]" here? Going through Documentation/devicetree/bindings/opp/opp-v2.yaml didn't tell me much about this multi regulator binding, I only see 1 example. Please can you explain a bit more or make this line more clear? > + to describe both regulators needed by the platform. > + > +maintainers: > + - Nishanth Menon <nm@ti.com> > + > +properties: > + $nodename: > + pattern: '^opp-supply(@[0-9a-f]+)?$' [...]
On 10:18-20230809, Dhruva Gole wrote: > On Aug 08, 2023 at 21:30:44 -0500, Nishanth Menon wrote: > > Rename ti-omap5-opp-supply to be bit more generic omap-opp-supply and > > convert the free text binding to json-schema. > > > > Signed-off-by: Nishanth Menon <nm@ti.com> > > --- > > Changes since V2: > > - None. > > > > V2: https://lore.kernel.org/r/20230801233341.1416552-2-nm@ti.com > > V1: https://lore.kernel.org/all/20230724153911.1376830-5-nm@ti.com/ > > .../bindings/opp/ti,omap-opp-supply.yaml | 103 ++++++++++++++++++ > > .../bindings/opp/ti-omap5-opp-supply.txt | 63 ----------- > > 2 files changed, 103 insertions(+), 63 deletions(-) > > create mode 100644 Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > > delete mode 100644 Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt > > > > diff --git a/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > > new file mode 100644 > > index 000000000000..4db80e418829 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml > > @@ -0,0 +1,103 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/opp/ti,omap-opp-supply.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Texas Instruments OMAP compatible OPP supply > > + > > +description: > > + OMAP5, DRA7, and AM57 family of SoCs have Class0 AVS eFuse registers which > > + contain data that can be used to adjust voltages programmed for some of their > > + supplies for more efficient operation. This binding provides the information > > + needed to read these values and use them to program the main regulator during > > + an OPP transitions. > > + > > + Also, some supplies may have an associated vbb-supply which is an Adaptive Body > > + Bias regulator which much be transitioned in a specific sequence with regards > > s/much/must ? Thanks. > > > + to the vdd-supply and clk when making an OPP transition. By supplying two > > + regulators to the device that will undergo OPP transitions we can make use > > + of the multi regulator binding that is part of the OPP core described > > Existing txt seems to have: > > part of the OPP core described here [1] > > Why get rid of the reference "[1]" here? > > Going through Documentation/devicetree/bindings/opp/opp-v2.yaml didn't > tell me much about this multi regulator binding, I only see 1 example. > > Please can you explain a bit more or make this line more clear? Example 4 in the referenced binding does explain that - consumer examples that are already documented does'nt make sense to be replicated here. I will add a reference to opp-v2.yaml binding along with a pointer to example 4. > > > + to describe both regulators needed by the platform. > > + > > +maintainers: > > + - Nishanth Menon <nm@ti.com> > > + > > +properties: > > + $nodename: > > + pattern: '^opp-supply(@[0-9a-f]+)?$' > [...] > Thanks for the detailed review. Will repost a new rev in a few days if there are no further review comments.
diff --git a/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml new file mode 100644 index 000000000000..4db80e418829 --- /dev/null +++ b/Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/opp/ti,omap-opp-supply.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments OMAP compatible OPP supply + +description: + OMAP5, DRA7, and AM57 family of SoCs have Class0 AVS eFuse registers which + contain data that can be used to adjust voltages programmed for some of their + supplies for more efficient operation. This binding provides the information + needed to read these values and use them to program the main regulator during + an OPP transitions. + + Also, some supplies may have an associated vbb-supply which is an Adaptive Body + Bias regulator which much be transitioned in a specific sequence with regards + to the vdd-supply and clk when making an OPP transition. By supplying two + regulators to the device that will undergo OPP transitions we can make use + of the multi regulator binding that is part of the OPP core described + to describe both regulators needed by the platform. + +maintainers: + - Nishanth Menon <nm@ti.com> + +properties: + $nodename: + pattern: '^opp-supply(@[0-9a-f]+)?$' + + compatible: + oneOf: + - description: Basic OPP supply controlling VDD and VBB + items: + - const: ti,omap-opp-supply + - description: OMAP5+ optimized voltages in efuse(Class 0) VDD along with + VBB. + items: + - const: ti,omap5-opp-supply + - description: OMAP5+ optimized voltages in efuse(class0) VDD but no VBB + items: + - const: ti,omap5-core-opp-supply + + reg: + maxItems: 1 + + ti,absolute-max-voltage-uv: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Absolute maximum voltage for the OPP supply in micro-volts. + minimum: 750000 + maximum: 1500000 + + ti,efuse-settings: + description: An array of u32 tuple items providing information about + optimized efuse configuration. + minItems: 1 + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - + description: Reference voltage in micro-volts (OPP Voltage) + minimum: 750000 + maximum: 1500000 + multipleOf: 10000 + - + description: efuse offset where the optimized voltage is located + multipleOf: 4 + maximum: 256 + +required: + - compatible + - ti,absolute-max-voltage-uv + +allOf: + - if: + not: + properties: + compatible: + contains: + const: ti,omap-opp-supply + then: + required: + - reg + - ti,efuse-settings + +additionalProperties: false + +examples: + - | + opp-supply { + compatible = "ti,omap-opp-supply"; + ti,absolute-max-voltage-uv = <1375000>; + }; + - | + opp-supply@4a003b20 { + compatible = "ti,omap5-opp-supply"; + reg = <0x4a003b20 0x8>; + ti,efuse-settings = + /* uV offset */ + <1060000 0x0>, + <1160000 0x4>, + <1210000 0x8>; + ti,absolute-max-voltage-uv = <1500000>; + }; diff --git a/Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt b/Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt deleted file mode 100644 index b70d326117cd..000000000000 --- a/Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt +++ /dev/null @@ -1,63 +0,0 @@ -Texas Instruments OMAP compatible OPP supply description - -OMAP5, DRA7, and AM57 family of SoCs have Class0 AVS eFuse registers which -contain data that can be used to adjust voltages programmed for some of their -supplies for more efficient operation. This binding provides the information -needed to read these values and use them to program the main regulator during -an OPP transitions. - -Also, some supplies may have an associated vbb-supply which is an Adaptive Body -Bias regulator which much be transitioned in a specific sequence with regards -to the vdd-supply and clk when making an OPP transition. By supplying two -regulators to the device that will undergo OPP transitions we can make use -of the multi regulator binding that is part of the OPP core described here [1] -to describe both regulators needed by the platform. - -[1] Documentation/devicetree/bindings/opp/opp-v2.yaml - -Required Properties for Device Node: -- vdd-supply: phandle to regulator controlling VDD supply -- vbb-supply: phandle to regulator controlling Body Bias supply - (Usually Adaptive Body Bias regulator) - -Required Properties for opp-supply node: -- compatible: Should be one of: - "ti,omap-opp-supply" - basic OPP supply controlling VDD and VBB - "ti,omap5-opp-supply" - OMAP5+ optimized voltages in efuse(class0)VDD - along with VBB - "ti,omap5-core-opp-supply" - OMAP5+ optimized voltages in efuse(class0) VDD - but no VBB. -- reg: Address and length of the efuse register set for the device (mandatory - only for "ti,omap5-opp-supply") -- ti,efuse-settings: An array of u32 tuple items providing information about - optimized efuse configuration. Each item consists of the following: - volt: voltage in uV - reference voltage (OPP voltage) - efuse_offseet: efuse offset from reg where the optimized voltage is stored. -- ti,absolute-max-voltage-uv: absolute maximum voltage for the OPP supply. - -Example: - -/* Device Node (CPU) */ -cpus { - cpu0: cpu@0 { - device_type = "cpu"; - - ... - - vdd-supply = <&vcc>; - vbb-supply = <&abb_mpu>; - }; -}; - -/* OMAP OPP Supply with Class0 registers */ -opp_supply_mpu: opp_supply@4a003b20 { - compatible = "ti,omap5-opp-supply"; - reg = <0x4a003b20 0x8>; - ti,efuse-settings = < - /* uV offset */ - 1060000 0x0 - 1160000 0x4 - 1210000 0x8 - >; - ti,absolute-max-voltage-uv = <1500000>; -};
Rename ti-omap5-opp-supply to be bit more generic omap-opp-supply and convert the free text binding to json-schema. Signed-off-by: Nishanth Menon <nm@ti.com> --- Changes since V2: - None. V2: https://lore.kernel.org/r/20230801233341.1416552-2-nm@ti.com V1: https://lore.kernel.org/all/20230724153911.1376830-5-nm@ti.com/ .../bindings/opp/ti,omap-opp-supply.yaml | 103 ++++++++++++++++++ .../bindings/opp/ti-omap5-opp-supply.txt | 63 ----------- 2 files changed, 103 insertions(+), 63 deletions(-) create mode 100644 Documentation/devicetree/bindings/opp/ti,omap-opp-supply.yaml delete mode 100644 Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt