| Message ID | 20240925215847.3594898-4-chris.packham@alliedtelesis.co.nz (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | RTL9300 support for reboot and i2c | expand |
On Thu, Sep 26, 2024 at 09:58:44AM +1200, Chris Packham wrote: > Add device tree schema for the Realtek RTL9300 switches. The RTL9300 > family is made up of the RTL9301, RTL9302B, RTL9302C and RTL9303. These > have the same SoC differ in the Ethernet switch/SERDES arrangement. > > Currently the only supported features are the syscon-reboot and i2c > controllers. The syscon-reboot is needed to be able to reboot the board. > The I2C controllers are slightly unusual because they each own an SCL > pin (GPIO8 for the first controller, GPIO 17 for the second) but have 8 > common SDA pins which can be assigned to either controller (but not > both). > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > --- > > Notes: > Changes in v5: > I've combined the two series I had in flight so this is the > combination of adding the switch syscon, the reboot and i2c. It makes > the changelog a bit meaningless so I've dropped the earlier > commentary. > > As requested I've put a more complete example in the main > rtl9300-switch.yaml. > > I've kept rtl9300-i2c.yaml separate for now but link to it with a $ref > from rtl9300-switch.yaml to reduce clutter. The example in > rtl9300-i2c.yaml is technically duplicating part of the example from > rtl9300-switch.yaml but I feel it's nice to be able to see the example > next to where the properties are defined. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
Intentional top-post. These replies all came in without the original mail. Does anyone have any idea why that would have been? On Thu, 26 Sep 2024, Krzysztof Kozlowski wrote: > On Thu, Sep 26, 2024 at 09:58:44AM +1200, Chris Packham wrote: > > Add device tree schema for the Realtek RTL9300 switches. The RTL9300 > > family is made up of the RTL9301, RTL9302B, RTL9302C and RTL9303. These > > have the same SoC differ in the Ethernet switch/SERDES arrangement. > > > > Currently the only supported features are the syscon-reboot and i2c > > controllers. The syscon-reboot is needed to be able to reboot the board. > > The I2C controllers are slightly unusual because they each own an SCL > > pin (GPIO8 for the first controller, GPIO 17 for the second) but have 8 > > common SDA pins which can be assigned to either controller (but not > > both). > > > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > > --- > > > > Notes: > > Changes in v5: > > I've combined the two series I had in flight so this is the > > combination of adding the switch syscon, the reboot and i2c. It makes > > the changelog a bit meaningless so I've dropped the earlier > > commentary. > > > > As requested I've put a more complete example in the main > > rtl9300-switch.yaml. > > > > I've kept rtl9300-i2c.yaml separate for now but link to it with a $ref > > from rtl9300-switch.yaml to reduce clutter. The example in > > rtl9300-i2c.yaml is technically duplicating part of the example from > > rtl9300-switch.yaml but I feel it's nice to be able to see the example > > next to where the properties are defined. > > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > > Best regards, > Krzysztof >
On 26/09/2024 09:45, Lee Jones wrote: > Intentional top-post. > > These replies all came in without the original mail. > > Does anyone have any idea why that would have been? Spam folder? Lists got them: https://lore.kernel.org/all/20240925215847.3594898-4-chris.packham@alliedtelesis.co.nz/ Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml b/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml new file mode 100644 index 000000000000..e8cf328b2710 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/realtek,rtl9300-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek RTL I2C Controller + +maintainers: + - Chris Packham <chris.packham@alliedtelesis.co.nz> + +description: + The RTL9300 SoC has two I2C controllers. Each of these has an SCL line (which + if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be + assigned to either I2C controller. + +properties: + compatible: + items: + - enum: + - realtek,rtl9301-i2c + - realtek,rtl9302b-i2c + - realtek,rtl9302c-i2c + - realtek,rtl9303-i2c + - const: realtek,rtl9300-i2c + + reg: + description: Register offset and size this I2C controller. + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + '^i2c@[0-7]$': + $ref: /schemas/i2c/i2c-controller.yaml + unevaluatedProperties: false + + properties: + reg: + description: The SDA pin associated with the I2C bus. + maxItems: 1 + + required: + - reg + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + i2c@36c { + compatible = "realtek,rtl9302c-i2c", "realtek,rtl9300-i2c"; + reg = <0x36c 0x14>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + gpio@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + + i2c@2 { + reg = <2>; + #address-cells = <1>; + #size-cells = <0>; + gpio@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + }; + i2c@388 { + compatible = "realtek,rtl9302c-i2c", "realtek,rtl9300-i2c"; + reg = <0x388 0x14>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@7 { + reg = <7>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/realtek,rtl9300-switch.yaml b/Documentation/devicetree/bindings/mfd/realtek,rtl9300-switch.yaml new file mode 100644 index 000000000000..a8e75b1bd286 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/realtek,rtl9300-switch.yaml @@ -0,0 +1,115 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/realtek,rtl9300-switch.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek Switch with Internal CPU + +maintainers: + - Chris Packham <chris.packham@alliedtelesis.co.nz> + +description: + The RTL9302 is an Ethernet switch with an integrated CPU. A number of + different peripherals are accessed through a common register block, + represented here as a syscon node. + +properties: + compatible: + items: + - enum: + - realtek,rtl9301-switch + - realtek,rtl9302b-switch + - realtek,rtl9302c-switch + - realtek,rtl9303-switch + - const: realtek,rtl9300-switch + - const: syscon + - const: simple-mfd + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + +patternProperties: + 'reboot@[0-9a-f]+$': + $ref: /schemas/power/reset/syscon-reboot.yaml# + + 'i2c@[0-9a-f]+$': + $ref: /schemas/i2c/realtek,rtl9300-i2c.yaml# + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + ethernet-switch@1b000000 { + compatible = "realtek,rtl9302c-switch", "realtek,rtl9300-switch", "syscon", "simple-mfd"; + reg = <0x1b000000 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + + reboot@c { + compatible = "syscon-reboot"; + reg = <0x0c 0x4>; + value = <0x01>; + }; + + i2c@36c { + compatible = "realtek,rtl9302c-i2c", "realtek,rtl9300-i2c"; + reg = <0x36c 0x14>; + #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>; + }; + }; + }; + + i2c@388 { + compatible = "realtek,rtl9302c-i2c", "realtek,rtl9300-i2c"; + reg = <0x388 0x14>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@7 { + reg = <7>; + #address-cells = <1>; + #size-cells = <0>; + gpio@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + }; + }; +
Add device tree schema for the Realtek RTL9300 switches. The RTL9300 family is made up of the RTL9301, RTL9302B, RTL9302C and RTL9303. These have the same SoC differ in the Ethernet switch/SERDES arrangement. Currently the only supported features are the syscon-reboot and i2c controllers. The syscon-reboot is needed to be able to reboot the board. The I2C controllers are slightly unusual because they each own an SCL pin (GPIO8 for the first controller, GPIO 17 for the second) but have 8 common SDA pins which can be assigned to either controller (but not both). Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> --- Notes: Changes in v5: I've combined the two series I had in flight so this is the combination of adding the switch syscon, the reboot and i2c. It makes the changelog a bit meaningless so I've dropped the earlier commentary. As requested I've put a more complete example in the main rtl9300-switch.yaml. I've kept rtl9300-i2c.yaml separate for now but link to it with a $ref from rtl9300-switch.yaml to reduce clutter. The example in rtl9300-i2c.yaml is technically duplicating part of the example from rtl9300-switch.yaml but I feel it's nice to be able to see the example next to where the properties are defined. .../bindings/i2c/realtek,rtl9300-i2c.yaml | 98 +++++++++++++++ .../bindings/mfd/realtek,rtl9300-switch.yaml | 115 ++++++++++++++++++ 2 files changed, 213 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml create mode 100644 Documentation/devicetree/bindings/mfd/realtek,rtl9300-switch.yaml