| Message ID | 20240920000930.1828086-2-chris.packham@alliedtelesis.co.nz (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | i2c: RTL9300 support | expand |
On Fri, 20 Sep 2024 12:09:28 +1200, Chris Packham wrote: > Add dtschema for the I2C controller on the RTL9300 SoC. The I2C > controllers on this SoC are part of the "switch" block which is > represented here as a syscon node. The SCL pins are dependent on the I2C > controller (GPIO8 for the first controller, GPIO 17 for the second). The > SDA pins can be assigned to either one of the I2C controllers (but not > both). > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > --- > > Notes: > Changes in v2: > - Use reg property for controller registers > - Remove global-control-offset (will be hard coded in driver) > - Integrated the multiplexing function. Child nodes now represent the > available SDA lines > > .../bindings/i2c/realtek,rtl9300-i2c.yaml | 82 +++++++++++++++++++ > MAINTAINERS | 6 ++ > 2 files changed, 88 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml > My bot found errors running 'make dt_binding_check' on your patch: yamllint warnings/errors: dtschema/dtc warnings/errors: Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.example.dtb: /example-0/switch@1b000000: failed to match any schema with compatible: ['realtek,rtl9302c-switch', 'syscon', 'simple-mfd'] /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.example.dtb: i2c@36c: Unevaluated properties are not allowed ('#address-cells', '#size-cells', 'clock-frequency' were unexpected) from schema $id: http://devicetree.org/schemas/i2c/realtek,rtl9300-i2c.yaml# doc reference errors (make refcheckdocs): See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20240920000930.1828086-2-chris.packham@alliedtelesis.co.nz The base for the series is generally the latest rc1. A different dependency should be noted in *this* patch. If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date: pip3 install dtschema --upgrade Please check and re-submit after running the above command yourself. Note that DT_SCHEMA_FILES can be set to your schema file to speed up checking your schema. However, it must be unset to test all examples with your schema.
diff --git a/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml b/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml new file mode 100644 index 000000000000..e8c37239b299 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/realtek,rtl9300-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek RTL I2C Controller + +maintainers: + - Chris Packham <chris.packham@alliedtelesis.co.nz> + +description: + The RTL9300 SoC has two I2C controllers. Each of these has an SCL line (which + if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be + assigned to either I2C controller. + +properties: + compatible: + const: realtek,rtl9300-i2c + + reg: + description: Register offset and size this I2C controller. + +patternProperties: + '^i2c@[0-7]$': + $ref: /schemas/i2c/i2c-controller.yaml + unevaluatedProperties: false + + properties: + reg: + description: The SDA pin associated with the I2C bus. + maxItems: 1 + + required: + - reg + +unevaluatedProperties: false + +required: + - compatible + - reg + +examples: + - | + switch@1b000000 { + compatible = "realtek,rtl9302c-switch", "syscon", "simple-mfd"; + reg = <0x1b000000 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + + i2c@36c { + compatible = "realtek,rtl9300-i2c"; + reg = <0x36c 0x14>; + clock-frequency = <100000>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + gpio@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + + i2c@2 { + reg = <2>; + #address-cells = <1>; + #size-cells = <0>; + gpio@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index f328373463b0..ccb1125444f4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19887,6 +19887,12 @@ S: Maintained T: git https://github.com/pkshih/rtw.git F: drivers/net/wireless/realtek/rtl8xxxu/ +RTL9300 I2C DRIVER (rtl9300-i2c) +M: Chris Packham <chris.packham@alliedtelesis.co.nz> +L: linux-i2c@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml + RTRS TRANSPORT DRIVERS M: Md. Haris Iqbal <haris.iqbal@ionos.com> M: Jack Wang <jinpu.wang@ionos.com>
Add dtschema for the I2C controller on the RTL9300 SoC. The I2C controllers on this SoC are part of the "switch" block which is represented here as a syscon node. The SCL pins are dependent on the I2C controller (GPIO8 for the first controller, GPIO 17 for the second). The SDA pins can be assigned to either one of the I2C controllers (but not both). Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> --- Notes: Changes in v2: - Use reg property for controller registers - Remove global-control-offset (will be hard coded in driver) - Integrated the multiplexing function. Child nodes now represent the available SDA lines .../bindings/i2c/realtek,rtl9300-i2c.yaml | 82 +++++++++++++++++++ MAINTAINERS | 6 ++ 2 files changed, 88 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml