diff mbox series

[V6,1/6] dt-bindings: usb: Add Cypress cypd4226 Type-C controller

Message ID 20230119121639.226729-2-jonathanh@nvidia.com
State Changes Requested
Headers show
Series Add device-tree support for Cypress CYPD4226 | expand

Commit Message

Jon Hunter Jan. 19, 2023, 12:16 p.m. UTC
From: Wayne Chang <waynec@nvidia.com>

Add the device-tree binding documentation for Cypress cypd4226 dual
Type-C controller.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V5 -> V6: no changes
V4 -> V5: updated subject and updated binding to use 'firmware-name'.
V3 -> V4: no changes
V2 -> V3: fix additionalProperties warning on new schema
V1 -> V2: based on the review comments. Fix some addressed issues on

 .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml

Comments

Krzysztof Kozlowski Jan. 20, 2023, 8:32 a.m. UTC | #1
On 19/01/2023 13:16, Jon Hunter wrote:
> From: Wayne Chang <waynec@nvidia.com>
> 
> Add the device-tree binding documentation for Cypress cypd4226 dual
> Type-C controller.
> 
> Signed-off-by: Wayne Chang <waynec@nvidia.com>
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
> V5 -> V6: no changes
> V4 -> V5: updated subject and updated binding to use 'firmware-name'.
> V3 -> V4: no changes
> V2 -> V3: fix additionalProperties warning on new schema
> V1 -> V2: based on the review comments. Fix some addressed issues on
> 
>  .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> new file mode 100644
> index 000000000000..5d87c9f09913
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cypress cypd4226 Type-C Controller
> +
> +maintainers:
> +  - Wayne Chang <waynec@nvidia.com>
> +
> +description:
> +  The Cypress cypd4226 is a dual Type-C controller that is controlled
> +  via an I2C interface.
> +
> +properties:
> +  compatible:
> +    const: cypress,cypd4226
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +  reg:
> +    const: 0x08
> +
> +  interrupts:
> +    items:
> +      - description: cypd4226 host interrupt
> +
> +  firmware-name:
> +    enum:
> +      - nvidia,gpu
> +      - nvidia,jetson-agx-xavier
> +    description: |
> +      The name of the CCGx firmware built for product series.
> +      should be set one of following:
> +      - "nvidia,gpu" for the NVIDIA RTX product series
> +      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series
> +
> +patternProperties:
> +  '^connector@[0-1]+$':
> +    $ref: /schemas/connector/usb-connector.yaml#

On this level:
unevaluatedProperties: false

> +    properties:
> +      reg:
> +        maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/tegra194-gpio.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      #interrupt-cells = <2>;

Drop, does not look like relevant or used here.

> +
> +      ucsi-ccg@8 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +        compatible = "cypress,cypd4226";
> +        reg = <0x08>;
> +        interrupt-parent = <&gpio_aon>;
> +        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
> +        firmware-name = "nvidia,jetson-agx-xavier";
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        ccg_typec_con0: connector@0 {
> +          compatible = "usb-c-connector";
> +          reg = <0>;
> +          label = "USB-C";
> +          data-role = "dual";
> +          port {
> +            ucsi_ccg_p0: endpoint {
> +              remote-endpoint = <&usb_role_switch0>;
> +            };
> +          };
> +        };
> +      };
> +    };

Best regards,
Krzysztof
Jon Hunter Jan. 23, 2023, 2:28 p.m. UTC | #2
On 20/01/2023 08:32, Krzysztof Kozlowski wrote:

...

>> +examples:
>> +  - |
>> +    #include <dt-bindings/gpio/tegra194-gpio.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    i2c {
>> +      #address-cells = <1>;
>> +      #size-cells = <0>;
>> +      #interrupt-cells = <2>;
> 
> Drop, does not look like relevant or used here.


Without the above I get ...

Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:25.13-26: Warning (reg_format): /example-0/i2c/typec-controller@8:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #address-cells for I2C bus
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #size-cells for I2C bus
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'i2c_bus_bridge'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #address-cells value
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #size-cells value
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (unique_unit_address_if_enabled): Failed prerequisite 'avoid_default_addr_size'
Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: typec-controller@8: interrupts: [[10], [8]] is too long

> 
>> +
>> +      ucsi-ccg@8 {
> 
> Node names should be generic.
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation


Thanks. I don't see anything there is would fit here, so would 'typec-controller' for the node name be OK?

Cheers
Jon
Jon Hunter Jan. 23, 2023, 3:04 p.m. UTC | #3
On 23/01/2023 14:28, Jon Hunter wrote:

...

>>> +
>>> +      ucsi-ccg@8 {
>>
>> Node names should be generic.
>> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> 
> 
> Thanks. I don't see anything there is would fit here, so would 
> 'typec-controller' for the node name be OK?


Looks like the st,typec-stm32g0 and google,cros-ec-typec both use just 
'typec'. So we can use the same as this looks quite similar to the ST 
device.

Jon
Krzysztof Kozlowski Jan. 23, 2023, 3:54 p.m. UTC | #4
On 23/01/2023 15:28, Jon Hunter wrote:
> 
> On 20/01/2023 08:32, Krzysztof Kozlowski wrote:
> 
> ...
> 
>>> +examples:
>>> +  - |
>>> +    #include <dt-bindings/gpio/tegra194-gpio.h>
>>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>>> +    i2c {
>>> +      #address-cells = <1>;
>>> +      #size-cells = <0>;
>>> +      #interrupt-cells = <2>;
>>
>> Drop, does not look like relevant or used here.
> 
> 
> Without the above I get ...

Didn't you drop too much? I meant only that one line above my comment,
so only interrupt-cells.

> 
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:25.13-26: Warning (reg_format): /example-0/i2c/typec-controller@8:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_reg): Failed prerequisite 'reg_format'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #address-cells for I2C bus
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #size-cells for I2C bus
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'i2c_bus_bridge'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #address-cells value
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #size-cells value
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (unique_unit_address_if_enabled): Failed prerequisite 'avoid_default_addr_size'
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: typec-controller@8: interrupts: [[10], [8]] is too long
> 
>>
>>> +
>>> +      ucsi-ccg@8 {
>>
>> Node names should be generic.
>> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> 
> 
> Thanks. I don't see anything there is would fit here, so would 'typec-controller' for the node name be OK?

Yeah, pretty often we miss a generic example. Can be just "typec".


> 

Best regards,
Krzysztof
Jon Hunter Jan. 23, 2023, 10:16 p.m. UTC | #5
On 23/01/2023 15:54, Krzysztof Kozlowski wrote:

...

>>>> +examples:
>>>> +  - |
>>>> +    #include <dt-bindings/gpio/tegra194-gpio.h>
>>>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>> +    i2c {
>>>> +      #address-cells = <1>;
>>>> +      #size-cells = <0>;
>>>> +      #interrupt-cells = <2>;
>>>
>>> Drop, does not look like relevant or used here.
>>
>>
>> Without the above I get ...
> 
> Didn't you drop too much? I meant only that one line above my comment,
> so only interrupt-cells.

Yes, I was not sure if you meant just interrupt-cells or all of them.
However ...

>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:25.13-26: Warning (reg_format): /example-0/i2c/typec-controller@8:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_reg): Failed prerequisite 'reg_format'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #address-cells for I2C bus
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:22.13-43.11: Warning (i2c_bus_bridge): /example-0/i2c: incorrect #size-cells for I2C bus
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'i2c_bus_bridge'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #address-cells value
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dts:23.30-42.13: Warning (avoid_default_addr_size): /example-0/i2c/typec-controller@8: Relying on default #size-cells value
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: Warning (unique_unit_address_if_enabled): Failed prerequisite 'avoid_default_addr_size'
>> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: typec-controller@8: interrupts: [[10], [8]] is too long

Per the above if we remove interrupt-cells, then we get ...

Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: typec@8: interrupts: [[10], [8]] is too long
 From schema: /home/jonathanh/workdir/tegra/korg-linux-next.git/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml

So it seems that we need this as well.

Jon
Krzysztof Kozlowski Jan. 24, 2023, 7:27 a.m. UTC | #6
On 23/01/2023 23:16, Jon Hunter wrote:
> Per the above if we remove interrupt-cells, then we get ...
> 
> Documentation/devicetree/bindings/usb/cypress,cypd4226.example.dtb: typec@8: interrupts: [[10], [8]] is too long
>  From schema: /home/jonathanh/workdir/tegra/korg-linux-next.git/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> 
> So it seems that we need this as well.
>
Indeed.

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
new file mode 100644
index 000000000000..5d87c9f09913
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
@@ -0,0 +1,86 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress cypd4226 Type-C Controller
+
+maintainers:
+  - Wayne Chang <waynec@nvidia.com>
+
+description:
+  The Cypress cypd4226 is a dual Type-C controller that is controlled
+  via an I2C interface.
+
+properties:
+  compatible:
+    const: cypress,cypd4226
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  reg:
+    const: 0x08
+
+  interrupts:
+    items:
+      - description: cypd4226 host interrupt
+
+  firmware-name:
+    enum:
+      - nvidia,gpu
+      - nvidia,jetson-agx-xavier
+    description: |
+      The name of the CCGx firmware built for product series.
+      should be set one of following:
+      - "nvidia,gpu" for the NVIDIA RTX product series
+      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series
+
+patternProperties:
+  '^connector@[0-1]+$':
+    $ref: /schemas/connector/usb-connector.yaml#
+    properties:
+      reg:
+        maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/tegra194-gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      #interrupt-cells = <2>;
+
+      ucsi-ccg@8 {
+        compatible = "cypress,cypd4226";
+        reg = <0x08>;
+        interrupt-parent = <&gpio_aon>;
+        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
+        firmware-name = "nvidia,jetson-agx-xavier";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        ccg_typec_con0: connector@0 {
+          compatible = "usb-c-connector";
+          reg = <0>;
+          label = "USB-C";
+          data-role = "dual";
+          port {
+            ucsi_ccg_p0: endpoint {
+              remote-endpoint = <&usb_role_switch0>;
+            };
+          };
+        };
+      };
+    };