Convert the Bosch C_CAN/D_CAN controller device tree binding
documentation to json-schema.
Document missing properties.
Remove "ti,hwmods" as it is no longer used in TI dts.
Make "clocks" required as it is used in all dts.
Correct nodename in the example.
Signed-off-by: Dario Binacchi <[email protected]>
---
Changes in v4:
- Fix 'syscon-raminit' property to pass checks.
- Drop 'status' property from CAN node of examples.
- Replace CAN node of examples (compatible = "bosch,d_can") with a
recent version taken from socfpga.dtsi dts.
- Update the 'interrupts' property due to the examples updating.
- Add 'resets' property due to the examples updating.
Changes in v3:
- Add type (phandle-array) and size (maxItems: 2) to syscon-raminit
property.
Changes in v2:
- Drop Documentation references.
.../bindings/net/can/bosch,c_can.yaml | 94 +++++++++++++++++++
.../devicetree/bindings/net/can/c_can.txt | 65 -------------
2 files changed, 94 insertions(+), 65 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
delete mode 100644 Documentation/devicetree/bindings/net/can/c_can.txt
diff --git a/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
new file mode 100644
index 000000000000..9f1028fe58d5
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
@@ -0,0 +1,94 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/can/bosch,c_can.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bosch C_CAN/D_CAN controller Device Tree Bindings
+
+description: Bosch C_CAN/D_CAN controller for CAN bus
+
+maintainers:
+ - Dario Binacchi <[email protected]>
+
+allOf:
+ - $ref: can-controller.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - bosch,c_can
+ - bosch,d_can
+ - ti,dra7-d_can
+ - ti,am3352-d_can
+ - items:
+ - enum:
+ - ti,am4372-d_can
+ - const: ti,am3352-d_can
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ minItems: 1
+ maxItems: 4
+
+ power-domains:
+ description: |
+ Should contain a phandle to a PM domain provider node and an args
+ specifier containing the DCAN device id value. It's mandatory for
+ Keystone 2 66AK2G SoCs only.
+ maxItems: 1
+
+ clocks:
+ description: |
+ CAN functional clock phandle.
+ maxItems: 1
+
+ clock-names:
+ maxItems: 1
+
+ syscon-raminit:
+ description: |
+ Handle to system control region that contains the RAMINIT register,
+ register offset to the RAMINIT register and the CAN instance number (0
+ offset).
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ items:
+ - description: The phandle to the system control region.
+ - description: The register offset.
+ - description: The CAN instance number.
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/reset/altr,rst-mgr.h>
+
+ can@ffc00000 {
+ compatible = "bosch,d_can";
+ reg = <0xffc00000 0x1000>;
+ interrupts = <0 131 4>, <0 132 4>, <0 133 4>, <0 134 4>;
+ clocks = <&can0_clk>;
+ resets = <&rst CAN0_RESET>;
+ };
+ - |
+ can@0 {
+ compatible = "ti,am3352-d_can";
+ reg = <0x0 0x2000>;
+ clocks = <&dcan1_fck>;
+ clock-names = "fck";
+ syscon-raminit = <&scm_conf 0x644 1>;
+ interrupts = <55>;
+ };
diff --git a/Documentation/devicetree/bindings/net/can/c_can.txt b/Documentation/devicetree/bindings/net/can/c_can.txt
deleted file mode 100644
index 366479806acb..000000000000
--- a/Documentation/devicetree/bindings/net/can/c_can.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-Bosch C_CAN/D_CAN controller Device Tree Bindings
--------------------------------------------------
-
-Required properties:
-- compatible : Should be "bosch,c_can" for C_CAN controllers and
- "bosch,d_can" for D_CAN controllers.
- Can be "ti,dra7-d_can", "ti,am3352-d_can" or
- "ti,am4372-d_can".
-- reg : physical base address and size of the C_CAN/D_CAN
- registers map
-- interrupts : property with a value describing the interrupt
- number
-
-The following are mandatory properties for DRA7x, AM33xx and AM43xx SoCs only:
-- ti,hwmods : Must be "d_can<n>" or "c_can<n>", n being the
- instance number
-
-The following are mandatory properties for Keystone 2 66AK2G SoCs only:
-- power-domains : Should contain a phandle to a PM domain provider node
- and an args specifier containing the DCAN device id
- value. This property is as per the binding,
- Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
-- clocks : CAN functional clock phandle. This property is as per the
- binding,
- Documentation/devicetree/bindings/clock/ti,sci-clk.yaml
-
-Optional properties:
-- syscon-raminit : Handle to system control region that contains the
- RAMINIT register, register offset to the RAMINIT
- register and the CAN instance number (0 offset).
-
-Note: "ti,hwmods" field is used to fetch the base address and irq
-resources from TI, omap hwmod data base during device registration.
-Future plan is to migrate hwmod data base contents into device tree
-blob so that, all the required data will be used from device tree dts
-file.
-
-Example:
-
-Step1: SoC common .dtsi file
-
- dcan1: d_can@481d0000 {
- compatible = "bosch,d_can";
- reg = <0x481d0000 0x2000>;
- interrupts = <55>;
- interrupt-parent = <&intc>;
- status = "disabled";
- };
-
-(or)
-
- dcan1: d_can@481d0000 {
- compatible = "bosch,d_can";
- ti,hwmods = "d_can1";
- reg = <0x481d0000 0x2000>;
- interrupts = <55>;
- interrupt-parent = <&intc>;
- status = "disabled";
- };
-
-Step 2: board specific .dts file
-
- &dcan1 {
- status = "okay";
- };
--
2.17.1
On Sun, Aug 01, 2021 at 09:53:22AM +0200, Dario Binacchi wrote:
> Convert the Bosch C_CAN/D_CAN controller device tree binding
> documentation to json-schema.
>
> Document missing properties.
> Remove "ti,hwmods" as it is no longer used in TI dts.
> Make "clocks" required as it is used in all dts.
> Correct nodename in the example.
>
> Signed-off-by: Dario Binacchi <[email protected]>
>
> ---
>
> Changes in v4:
> - Fix 'syscon-raminit' property to pass checks.
> - Drop 'status' property from CAN node of examples.
> - Replace CAN node of examples (compatible = "bosch,d_can") with a
> recent version taken from socfpga.dtsi dts.
> - Update the 'interrupts' property due to the examples updating.
> - Add 'resets' property due to the examples updating.
>
> Changes in v3:
> - Add type (phandle-array) and size (maxItems: 2) to syscon-raminit
> property.
>
> Changes in v2:
> - Drop Documentation references.
>
> .../bindings/net/can/bosch,c_can.yaml | 94 +++++++++++++++++++
> .../devicetree/bindings/net/can/c_can.txt | 65 -------------
> 2 files changed, 94 insertions(+), 65 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
> delete mode 100644 Documentation/devicetree/bindings/net/can/c_can.txt
>
> diff --git a/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
> new file mode 100644
> index 000000000000..9f1028fe58d5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/can/bosch,c_can.yaml
> @@ -0,0 +1,94 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/can/bosch,c_can.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Bosch C_CAN/D_CAN controller Device Tree Bindings
> +
> +description: Bosch C_CAN/D_CAN controller for CAN bus
> +
> +maintainers:
> + - Dario Binacchi <[email protected]>
> +
> +allOf:
> + - $ref: can-controller.yaml#
> +
> +properties:
> + compatible:
> + oneOf:
> + - enum:
> + - bosch,c_can
> + - bosch,d_can
> + - ti,dra7-d_can
> + - ti,am3352-d_can
> + - items:
> + - enum:
> + - ti,am4372-d_can
> + - const: ti,am3352-d_can
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + minItems: 1
> + maxItems: 4
Well, now you have to define what each interrupt is.
> +
> + power-domains:
> + description: |
> + Should contain a phandle to a PM domain provider node and an args
> + specifier containing the DCAN device id value. It's mandatory for
> + Keystone 2 66AK2G SoCs only.
> + maxItems: 1
> +
> + clocks:
> + description: |
> + CAN functional clock phandle.
> + maxItems: 1
> +
> + clock-names:
> + maxItems: 1
> +
> + syscon-raminit:
> + description: |
> + Handle to system control region that contains the RAMINIT register,
> + register offset to the RAMINIT register and the CAN instance number (0
> + offset).
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + items:
> + items:
> + - description: The phandle to the system control region.
> + - description: The register offset.
> + - description: The CAN instance number.
> +
> + resets:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/reset/altr,rst-mgr.h>
> +
> + can@ffc00000 {
> + compatible = "bosch,d_can";
> + reg = <0xffc00000 0x1000>;
> + interrupts = <0 131 4>, <0 132 4>, <0 133 4>, <0 134 4>;
> + clocks = <&can0_clk>;
> + resets = <&rst CAN0_RESET>;
> + };
> + - |
> + can@0 {
> + compatible = "ti,am3352-d_can";
> + reg = <0x0 0x2000>;
> + clocks = <&dcan1_fck>;
> + clock-names = "fck";
> + syscon-raminit = <&scm_conf 0x644 1>;
> + interrupts = <55>;
> + };