| Message ID | 20240829213102.448047-2-macroalpha82@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add Texas Instruments BQ25703 Charger | expand |
On Thu, Aug 29, 2024 at 04:30:58PM -0500, Chris Morgan wrote: > From: Chris Morgan <macromorgan@hotmail.com> > > Document the Texas instruments BQ25703 series of charger managers/ > buck/boost regulators. > > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > --- > .../devicetree/bindings/mfd/ti,bq25703a.yaml | 143 ++++++++++++++++++ > 1 file changed, 143 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > diff --git a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > new file mode 100644 > index 000000000000..e555aa60f9ad > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > @@ -0,0 +1,143 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/ti,bq25703a.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: BQ25703 Charger Manager/Buck/Boost Converter BQ25703A? > + > +maintainers: > + - Chris Morgan <macromorgan@hotmail.com> > + > +properties: > + compatible: > + const: ti,bq25703a > + > + reg: > + const: 0x6b > + description: I2C slave address Drop description. > + > + interrupts: > + maxItems: 1 > + > + power-supplies: > + description: > + phandle of the power supply that provides input power > + $ref: /schemas/types.yaml#/definitions/phandle Already has a type. You need a reference to power-supply.yaml at the top level and 'maxItems: 1' here. > + > + ti,charge-current: > + description: > + maximum current to apply to charging the battery > + minimum: 0 > + maximum: 8128000 > + $ref: /schemas/types.yaml#/definitions/uint32 I guess this is copied from other TI parts, but really this should move to a property with a unit suffix. Or these shared properties moved to a shared schema so we aren't redefining the type multiple times. Same for the others here. > + > + ti,current-limit: > + description: > + maximum total input current allowed > + minimum: 50000 > + maximum: 6400000 > + default: 3250000 > + $ref: /schemas/types.yaml#/definitions/uint32 > + > + ti,max-charge-voltage: > + description: > + maximum voltage to apply to charging the battery > + minimum: 1024000 > + maximum: 19200000 > + $ref: /schemas/types.yaml#/definitions/uint32 > + > + ti,minimum-sys-voltage: > + description: > + minimum system voltage while on battery power, with default value > + depending based on cell configuration > + minimum: 1024000 > + maximum: 16128000 > + default: > + enum: [3584000, 6144000, 9216000, 16128000] > + $ref: /schemas/types.yaml#/definitions/uint32 > + > + regulators: > + type: object > + additionalProperties: false > + description: > + Boost converter regulator output of bq257xx Doesn't this apply to "usb-otg-vbus"? Really, only one regulator, so you don't need a container node. > + > + properties: > + "usb-otg-vbus": Don't need quotes. > + type: object > + $ref: /schemas/regulator/regulator.yaml > + > + properties: > + regulator-name: true > + regulator-min-microamp: > + minimum: 0 > + maximum: 6350000 > + regulator-max-microamp: > + minimum: 0 > + maximum: 6350000 > + regulator-min-microvolt: > + minimum: 4480000 > + maximum: 20800000 > + regulator-max-microvolt: > + minimum: 4480000 > + maximum: 20800000 > + enable-gpios: > + description: > + The BQ25703 may require both a register write and a GPIO > + toggle to enable the boost regulator. > + > + additionalProperties: true Nope. > + > + required: > + - regulator-name > + - regulator-min-microamp > + - regulator-max-microamp > + - regulator-min-microvolt > + - regulator-max-microvolt > + > +additionalProperties: false > + > +required: > + - compatible > + - reg > + - power-supplies > + - ti,charge-current > + - ti,current-limit > + - ti,max-charge-voltage > + - ti,minimum-sys-voltage > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + #include <dt-bindings/pinctrl/rockchip.h> > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + > + bq25703: bq25703@6b { charger@6b > + compatible = "ti,bq25703a"; > + reg = <0x6b>; > + interrupt-parent = <&gpio0>; > + interrupts = <RK_PD5 IRQ_TYPE_LEVEL_LOW>; > + power-supplies = <&fusb302>; > + ti,charge-current = <2500000>; > + ti,current-limit = <5000000>; > + ti,max-charge-voltage = <8750000>; > + ti,minimum-sys-voltage = <7400000>; > + > + regulators { > + usb_otg_vbus: usb-otg-vbus { > + enable-gpios = <&gpio4 RK_PA6 GPIO_ACTIVE_HIGH>; > + regulator-max-microamp = <960000>; > + regulator-max-microvolt = <5088000>; > + regulator-min-microamp = <512000>; > + regulator-min-microvolt = <4992000>; > + regulator-name = "usb_otg_vbus"; > + }; > + }; > + }; > + }; > + > +... > -- > 2.34.1 >
On Fri, Aug 30, 2024 at 11:30:42AM -0500, Rob Herring wrote: > On Thu, Aug 29, 2024 at 04:30:58PM -0500, Chris Morgan wrote: > > From: Chris Morgan <macromorgan@hotmail.com> > > > > Document the Texas instruments BQ25703 series of charger managers/ > > buck/boost regulators. > > > > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > > --- > > .../devicetree/bindings/mfd/ti,bq25703a.yaml | 143 ++++++++++++++++++ > > 1 file changed, 143 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > > > diff --git a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > new file mode 100644 > > index 000000000000..e555aa60f9ad > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > @@ -0,0 +1,143 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/mfd/ti,bq25703a.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: BQ25703 Charger Manager/Buck/Boost Converter > > BQ25703A? I'm not entirely sure on the nomenclature. I know for sure I have a BQ25703A in my device, but I don't know if the A is important or not. I'll just drop it until I know for sure to alleviate confusion. > > > + > > +maintainers: > > + - Chris Morgan <macromorgan@hotmail.com> > > + > > +properties: > > + compatible: > > + const: ti,bq25703a > > + > > + reg: > > + const: 0x6b > > + description: I2C slave address > > Drop description. Acknowledged. > > > + > > + interrupts: > > + maxItems: 1 > > + > > + power-supplies: > > + description: > > + phandle of the power supply that provides input power > > + $ref: /schemas/types.yaml#/definitions/phandle > > Already has a type. You need a reference to power-supply.yaml at the > top level and 'maxItems: 1' here. Gotcha, thank you. > > > + > > + ti,charge-current: > > + description: > > + maximum current to apply to charging the battery > > + minimum: 0 > > + maximum: 8128000 > > + $ref: /schemas/types.yaml#/definitions/uint32 > > I guess this is copied from other TI parts, but really this should move > to a property with a unit suffix. Or these shared properties moved to a > shared schema so we aren't redefining the type multiple times. > > Same for the others here. Correct, I tried to reuse the same TI specific properties. I suppose I could also eliminate ti,charge-current and ti,max-charge-voltage, and then just require a phandle to a simple-battery node which contains those two values in a vendor independent form. What do you think? ti,current-limit and ti,minimum-system-voltage though are other possible questions I have. Basically I could also create a vsys regulator that represents the vsys coming off this device too (I currently omit this entirely). This regulator wouldn't be programable but would report the existing input current and input voltage for the system, which in my case I'm pretty sure is stepped down to 5v or less and then fed into an RK806 PMIC (I lack the schematics so I don't know for sure). Of course if I did that then I'd have a valid reason to add a "regulators" node since I'd have more than one regulator. > > > + > > + ti,current-limit: > > + description: > > + maximum total input current allowed > > + minimum: 50000 > > + maximum: 6400000 > > + default: 3250000 > > + $ref: /schemas/types.yaml#/definitions/uint32 > > + > > + ti,max-charge-voltage: > > + description: > > + maximum voltage to apply to charging the battery > > + minimum: 1024000 > > + maximum: 19200000 > > + $ref: /schemas/types.yaml#/definitions/uint32 > > + > > + ti,minimum-sys-voltage: > > + description: > > + minimum system voltage while on battery power, with default value > > + depending based on cell configuration > > + minimum: 1024000 > > + maximum: 16128000 > > + default: > > + enum: [3584000, 6144000, 9216000, 16128000] > > + $ref: /schemas/types.yaml#/definitions/uint32 > > + > > + regulators: > > + type: object > > + additionalProperties: false > > + description: > > + Boost converter regulator output of bq257xx > > Doesn't this apply to "usb-otg-vbus"? > > Really, only one regulator, so you don't need a container node. > It does, that's a mistake on my part. And see above; I could add a regulator for the vsys (even though you wouldn't be able to set the voltage or current). > > + > > + properties: > > + "usb-otg-vbus": > > Don't need quotes. Acknowledged. > > > + type: object > > + $ref: /schemas/regulator/regulator.yaml > > + > > + properties: > > + regulator-name: true > > + regulator-min-microamp: > > + minimum: 0 > > + maximum: 6350000 > > + regulator-max-microamp: > > + minimum: 0 > > + maximum: 6350000 > > + regulator-min-microvolt: > > + minimum: 4480000 > > + maximum: 20800000 > > + regulator-max-microvolt: > > + minimum: 4480000 > > + maximum: 20800000 > > + enable-gpios: > > + description: > > + The BQ25703 may require both a register write and a GPIO > > + toggle to enable the boost regulator. > > + > > + additionalProperties: true > > Nope. > Acknowledged. > > + > > + required: > > + - regulator-name > > + - regulator-min-microamp > > + - regulator-max-microamp > > + - regulator-min-microvolt > > + - regulator-max-microvolt > > + > > +additionalProperties: false > > + > > +required: > > + - compatible > > + - reg > > + - power-supplies > > + - ti,charge-current > > + - ti,current-limit > > + - ti,max-charge-voltage > > + - ti,minimum-sys-voltage > > + > > +examples: > > + - | > > + #include <dt-bindings/gpio/gpio.h> > > + #include <dt-bindings/interrupt-controller/irq.h> > > + #include <dt-bindings/pinctrl/rockchip.h> > > + i2c { > > + #address-cells = <1>; > > + #size-cells = <0>; > > + > > + bq25703: bq25703@6b { > > charger@6b > Acknowledged. > > + compatible = "ti,bq25703a"; > > + reg = <0x6b>; > > + interrupt-parent = <&gpio0>; > > + interrupts = <RK_PD5 IRQ_TYPE_LEVEL_LOW>; > > + power-supplies = <&fusb302>; > > + ti,charge-current = <2500000>; > > + ti,current-limit = <5000000>; > > + ti,max-charge-voltage = <8750000>; > > + ti,minimum-sys-voltage = <7400000>; > > + > > + regulators { > > + usb_otg_vbus: usb-otg-vbus { > > + enable-gpios = <&gpio4 RK_PA6 GPIO_ACTIVE_HIGH>; > > + regulator-max-microamp = <960000>; > > + regulator-max-microvolt = <5088000>; > > + regulator-min-microamp = <512000>; > > + regulator-min-microvolt = <4992000>; > > + regulator-name = "usb_otg_vbus"; > > + }; > > + }; > > + }; > > + }; > > + > > +... > > -- > > 2.34.1 > > Thank you for your feedback, Chris
Hi, On Fri, Aug 30, 2024 at 11:30:42AM GMT, Rob Herring wrote: > On Thu, Aug 29, 2024 at 04:30:58PM -0500, Chris Morgan wrote: > > From: Chris Morgan <macromorgan@hotmail.com> > > > > Document the Texas instruments BQ25703 series of charger managers/ > > buck/boost regulators. > > > > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > > --- > > .../devicetree/bindings/mfd/ti,bq25703a.yaml | 143 ++++++++++++++++++ > > 1 file changed, 143 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > > > diff --git a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > new file mode 100644 > > index 000000000000..e555aa60f9ad > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml > > @@ -0,0 +1,143 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/mfd/ti,bq25703a.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: BQ25703 Charger Manager/Buck/Boost Converter > > BQ25703A? > > > + > > +maintainers: > > + - Chris Morgan <macromorgan@hotmail.com> > > + > > +properties: > > + compatible: > > + const: ti,bq25703a > > + > > + reg: > > + const: 0x6b > > + description: I2C slave address > > Drop description. > > > + > > + interrupts: > > + maxItems: 1 > > + > > + power-supplies: > > + description: > > + phandle of the power supply that provides input power > > + $ref: /schemas/types.yaml#/definitions/phandle > > Already has a type. You need a reference to power-supply.yaml at the > top level and 'maxItems: 1' here. > > > + > > + ti,charge-current: > > + description: > > + maximum current to apply to charging the battery > > + minimum: 0 > > + maximum: 8128000 > > + $ref: /schemas/types.yaml#/definitions/uint32 > > I guess this is copied from other TI parts, but really this should move > to a property with a unit suffix. Or these shared properties moved to a > shared schema so we aren't redefining the type multiple times. > > Same for the others here. This is effectively information about the battery cells. The driver should use the simple battery infrastructure and reference it via monitored-battery. See also: Documentation/devicetree/bindings/power/supply/battery.yaml > > + ti,current-limit: > > + description: > > + maximum total input current allowed > > + minimum: 50000 > > + maximum: 6400000 > > + default: 3250000 > > + $ref: /schemas/types.yaml#/definitions/uint32 Use "input-current-limit-microamp" as property name. > > + ti,max-charge-voltage: > > + description: > > + maximum voltage to apply to charging the battery > > + minimum: 1024000 > > + maximum: 19200000 > > + $ref: /schemas/types.yaml#/definitions/uint32 That also belong into the simple-battery node. > > + ti,minimum-sys-voltage: > > + description: > > + minimum system voltage while on battery power, with default value > > + depending based on cell configuration > > + minimum: 1024000 > > + maximum: 16128000 > > + default: > > + enum: [3584000, 6144000, 9216000, 16128000] > > + $ref: /schemas/types.yaml#/definitions/uint32 Property should have -uvolt suffix. Greetings, -- Sebastian > > + regulators: > > + type: object > > + additionalProperties: false > > + description: > > + Boost converter regulator output of bq257xx > > Doesn't this apply to "usb-otg-vbus"? > > Really, only one regulator, so you don't need a container node. > > > + > > + properties: > > + "usb-otg-vbus": > > Don't need quotes. > > > + type: object > > + $ref: /schemas/regulator/regulator.yaml > > + > > + properties: > > + regulator-name: true > > + regulator-min-microamp: > > + minimum: 0 > > + maximum: 6350000 > > + regulator-max-microamp: > > + minimum: 0 > > + maximum: 6350000 > > + regulator-min-microvolt: > > + minimum: 4480000 > > + maximum: 20800000 > > + regulator-max-microvolt: > > + minimum: 4480000 > > + maximum: 20800000 > > + enable-gpios: > > + description: > > + The BQ25703 may require both a register write and a GPIO > > + toggle to enable the boost regulator. > > + > > + additionalProperties: true > > Nope. > > > + > > + required: > > + - regulator-name > > + - regulator-min-microamp > > + - regulator-max-microamp > > + - regulator-min-microvolt > > + - regulator-max-microvolt > > + > > +additionalProperties: false > > + > > +required: > > + - compatible > > + - reg > > + - power-supplies > > + - ti,charge-current > > + - ti,current-limit > > + - ti,max-charge-voltage > > + - ti,minimum-sys-voltage > > + > > +examples: > > + - | > > + #include <dt-bindings/gpio/gpio.h> > > + #include <dt-bindings/interrupt-controller/irq.h> > > + #include <dt-bindings/pinctrl/rockchip.h> > > + i2c { > > + #address-cells = <1>; > > + #size-cells = <0>; > > + > > + bq25703: bq25703@6b { > > charger@6b > > > + compatible = "ti,bq25703a"; > > + reg = <0x6b>; > > + interrupt-parent = <&gpio0>; > > + interrupts = <RK_PD5 IRQ_TYPE_LEVEL_LOW>; > > + power-supplies = <&fusb302>; > > + ti,charge-current = <2500000>; > > + ti,current-limit = <5000000>; > > + ti,max-charge-voltage = <8750000>; > > + ti,minimum-sys-voltage = <7400000>; > > + > > + regulators { > > + usb_otg_vbus: usb-otg-vbus { > > + enable-gpios = <&gpio4 RK_PA6 GPIO_ACTIVE_HIGH>; > > + regulator-max-microamp = <960000>; > > + regulator-max-microvolt = <5088000>; > > + regulator-min-microamp = <512000>; > > + regulator-min-microvolt = <4992000>; > > + regulator-name = "usb_otg_vbus"; > > + }; > > + }; > > + }; > > + }; > > + > > +... > > -- > > 2.34.1 > >
Hi, On Fri, Aug 30, 2024 at 03:52:04PM GMT, Chris Morgan wrote: > > > + > > > + ti,charge-current: > > > + description: > > > + maximum current to apply to charging the battery > > > + minimum: 0 > > > + maximum: 8128000 > > > + $ref: /schemas/types.yaml#/definitions/uint32 > > > > I guess this is copied from other TI parts, but really this should move > > to a property with a unit suffix. Or these shared properties moved to a > > shared schema so we aren't redefining the type multiple times. > > > > Same for the others here. > > Correct, I tried to reuse the same TI specific properties. I suppose I > could also eliminate ti,charge-current and ti,max-charge-voltage, and > then just require a phandle to a simple-battery node which contains > those two values in a vendor independent form. What do you think? Yes. The bindings using vendor specific properties for this are from before the simple battery binding existed. > ti,current-limit and ti,minimum-system-voltage though are other > possible questions I have. Basically I could also create a vsys > regulator that represents the vsys coming off this device too (I > currently omit this entirely). This regulator wouldn't be programable > but would report the existing input current and input voltage for > the system, which in my case I'm pretty sure is stepped down to 5v > or less and then fed into an RK806 PMIC (I lack the schematics so > I don't know for sure). Of course if I did that then I'd have a > valid reason to add a "regulators" node since I'd have more than one > regulator. I like this approach, since it allows properly describing the hardware setup in DT and avoids the vendor specific properties. Greetings, -- Sebastian
diff --git a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml new file mode 100644 index 000000000000..e555aa60f9ad --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml @@ -0,0 +1,143 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/ti,bq25703a.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: BQ25703 Charger Manager/Buck/Boost Converter + +maintainers: + - Chris Morgan <macromorgan@hotmail.com> + +properties: + compatible: + const: ti,bq25703a + + reg: + const: 0x6b + description: I2C slave address + + interrupts: + maxItems: 1 + + power-supplies: + description: + phandle of the power supply that provides input power + $ref: /schemas/types.yaml#/definitions/phandle + + ti,charge-current: + description: + maximum current to apply to charging the battery + minimum: 0 + maximum: 8128000 + $ref: /schemas/types.yaml#/definitions/uint32 + + ti,current-limit: + description: + maximum total input current allowed + minimum: 50000 + maximum: 6400000 + default: 3250000 + $ref: /schemas/types.yaml#/definitions/uint32 + + ti,max-charge-voltage: + description: + maximum voltage to apply to charging the battery + minimum: 1024000 + maximum: 19200000 + $ref: /schemas/types.yaml#/definitions/uint32 + + ti,minimum-sys-voltage: + description: + minimum system voltage while on battery power, with default value + depending based on cell configuration + minimum: 1024000 + maximum: 16128000 + default: + enum: [3584000, 6144000, 9216000, 16128000] + $ref: /schemas/types.yaml#/definitions/uint32 + + regulators: + type: object + additionalProperties: false + description: + Boost converter regulator output of bq257xx + + properties: + "usb-otg-vbus": + type: object + $ref: /schemas/regulator/regulator.yaml + + properties: + regulator-name: true + regulator-min-microamp: + minimum: 0 + maximum: 6350000 + regulator-max-microamp: + minimum: 0 + maximum: 6350000 + regulator-min-microvolt: + minimum: 4480000 + maximum: 20800000 + regulator-max-microvolt: + minimum: 4480000 + maximum: 20800000 + enable-gpios: + description: + The BQ25703 may require both a register write and a GPIO + toggle to enable the boost regulator. + + additionalProperties: true + + required: + - regulator-name + - regulator-min-microamp + - regulator-max-microamp + - regulator-min-microvolt + - regulator-max-microvolt + +additionalProperties: false + +required: + - compatible + - reg + - power-supplies + - ti,charge-current + - ti,current-limit + - ti,max-charge-voltage + - ti,minimum-sys-voltage + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/pinctrl/rockchip.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + bq25703: bq25703@6b { + compatible = "ti,bq25703a"; + reg = <0x6b>; + interrupt-parent = <&gpio0>; + interrupts = <RK_PD5 IRQ_TYPE_LEVEL_LOW>; + power-supplies = <&fusb302>; + ti,charge-current = <2500000>; + ti,current-limit = <5000000>; + ti,max-charge-voltage = <8750000>; + ti,minimum-sys-voltage = <7400000>; + + regulators { + usb_otg_vbus: usb-otg-vbus { + enable-gpios = <&gpio4 RK_PA6 GPIO_ACTIVE_HIGH>; + regulator-max-microamp = <960000>; + regulator-max-microvolt = <5088000>; + regulator-min-microamp = <512000>; + regulator-min-microvolt = <4992000>; + regulator-name = "usb_otg_vbus"; + }; + }; + }; + }; + +...