| Message ID | 20221216183532.78933-3-nick.hawkins@hpe.com |
|---|---|
| State | New |
| Headers | show |
| Series | ARM: Add GXP I2C Support | expand |
On 16/12/2022 19:35, nick.hawkins@hpe.com wrote: > From: Nick Hawkins <nick.hawkins@hpe.com> > Subject: missing explanation what you are doing. Use `git log` to learn how this can be written. > Document binding to support I2C controller in GXP. > > Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com> > --- > .../devicetree/bindings/i2c/hpe,gxp-i2c.yaml | 63 +++++++++++++++++++ > 1 file changed, 63 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml > > diff --git a/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml > new file mode 100644 > index 000000000000..fa378e991fdb > --- /dev/null > +++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml > @@ -0,0 +1,63 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/i2c/hpe,gxp-i2c.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: HPE GXP SoC I2C Controller > + > +maintainers: > + - Nick Hawkins <nick.hawkins@hpe.com> > + > +allOf: > + - $ref: /schemas/i2c/i2c-controller.yaml# > + > +properties: > + compatible: > + const: hpe,gxp-i2c > + > + '#address-cells': > + const: 1 Drop, it's coming from i2c-controller. > + > + interrupts: > + maxItems: 1 > + > + reg: > + maxItems: 1 > + > + hpe,i2c-max-bus-freq: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + Desired frequency in Hz of the bus. No, there is existing property for this - clock-frequency. Do not invent own stuff. Even if this was accepted, you must use standard property suffixes. > + default: 100000 > + > + hpe,sysreg-phandle: Don't encode the type in property name. You do not call "reg" a "reg-uint32", right? or hpe,i2c-max-bus-freq-uint32? hpe,sysreg (unless you can name it more accurately) > + $ref: /schemas/types.yaml#/definitions/phandle > + description: Pandle to syscon used to control the system registers. > + > + '#size-cells': > + const: 0 Drop, it's coming from i2c-controller. Krzysztof
diff --git a/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml new file mode 100644 index 000000000000..fa378e991fdb --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/hpe,gxp-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: HPE GXP SoC I2C Controller + +maintainers: + - Nick Hawkins <nick.hawkins@hpe.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + const: hpe,gxp-i2c + + '#address-cells': + const: 1 + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + hpe,i2c-max-bus-freq: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Desired frequency in Hz of the bus. + default: 100000 + + hpe,sysreg-phandle: + $ref: /schemas/types.yaml#/definitions/phandle + description: Pandle to syscon used to control the system registers. + + '#size-cells': + const: 0 + +required: + - compatible + - reg + - interrupts + +unevaluatedProperties: false + +examples: + - | + i2c@2600 { + compatible = "hpe,gxp-i2c"; + reg = <0x2500 0x70>; + interrupts = <9>; + #address-cells = <1>; + #size-cells = <0>; + hpe,sysreg-phandle = <&sysreg_system_controller>; + hpe,i2c-max-bus-freq = <10000>; + + eeprom@50 { + compatible = "atmel,24c128"; + reg = <0x50>; + }; + };