Convert old text based binding to json schema.
Changes during conversion:
- Add a fallback for `microchip,sam9x60-can` as it is compatible with the
  CAN IP core on `atmel,at91sam9x5-can`.
- Add the required properties `clock` and `clock-names`, which were
  missing in the original binding.
- Update examples and include appropriate file directives to resolve
  errors identified by `dt_binding_check` and `dtbs_check`.

Signed-off-by: Charan Pedumuru <charan.pedumuru@microchip.com>
---
Changes in v3:
- Modified the commit message with reasons for each change
- Link to v2: https://lore.kernel.org/r/20241003-can-v2-1-85701d3296dd@microchip.com

Changes in v2:
- Renamed the title to "Microchip AT91 CAN controller"
- Removed the unnecessary labels and add clock properties to examples
- Removed if condition statements and made clock properties as default required properties
- Link to v1: https://lore.kernel.org/r/20240912-can-v1-1-c5651b1809bb@microchip.com
---
 .../bindings/net/can/atmel,at91sam9263-can.yaml    | 58 ++++++++++++++++++++++
 .../devicetree/bindings/net/can/atmel-can.txt      | 15 ------
 2 files changed, 58 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/can/atmel,at91sam9263-can.yaml b/Documentation/devicetree/bindings/net/can/atmel,at91sam9263-can.yaml
new file mode 100644
index 000000000000..c818c01a718b
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/atmel,at91sam9263-can.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/can/atmel,at91sam9263-can.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip AT91 CAN Controller
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+
+allOf:
+  - $ref: can-controller.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - atmel,at91sam9263-can
+          - atmel,at91sam9x5-can
+      - items:
+          - enum:
+              - microchip,sam9x60-can
+          - const: atmel,at91sam9x5-can
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: can_clk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/at91.h>
+    can@f000c000 {
+          compatible = "atmel,at91sam9263-can";
+          reg = <0xf000c000 0x300>;
+          interrupts = <30 IRQ_TYPE_LEVEL_HIGH 3>;
+          clocks = <&pmc PMC_TYPE_PERIPHERAL 12>;
+          clock-names = "can_clk";
+    };
diff --git a/Documentation/devicetree/bindings/net/can/atmel-can.txt b/Documentation/devicetree/bindings/net/can/atmel-can.txt
deleted file mode 100644
index 218a3b3eb27e..000000000000
--- a/Documentation/devicetree/bindings/net/can/atmel-can.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-* AT91 CAN *
-
-Required properties:
-  - compatible: Should be "atmel,at91sam9263-can", "atmel,at91sam9x5-can" or
-    "microchip,sam9x60-can"
-  - reg: Should contain CAN controller registers location and length
-  - interrupts: Should contain IRQ line for the CAN controller
-
-Example:
-
-	can0: can@f000c000 {
-		compatible = "atmel,at91sam9x5-can";
-		reg = <0xf000c000 0x300>;
-		interrupts = <40 4 5>
-	};

---
base-commit: 414c97c966b69e4a6ea7b32970fa166b2f9b9ef0
change-id: 20240912-can-8eb7f8e7566d

Best regards,
-- 
Charan Pedumuru <charan.pedumuru@microchip.com>

On Wed, Nov 20, 2024 at 01:58:08PM +0530, Charan Pedumuru wrote:
> Convert old text based binding to json schema.
> Changes during conversion:
> - Add a fallback for `microchip,sam9x60-can` as it is compatible with the
>   CAN IP core on `atmel,at91sam9x5-can`.
> - Add the required properties `clock` and `clock-names`, which were
>   missing in the original binding.
> - Update examples and include appropriate file directives to resolve
>   errors identified by `dt_binding_check` and `dtbs_check`.

...

> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/clock/at91.h>
> +    can@f000c000 {
> +          compatible = "atmel,at91sam9263-can";

If there is going to be any resend - fix the indentation: Use 4 spaces
for example indentation.

No need to resend just for this.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

<form letter>
This is an automated instruction, just in case, because many review tags
are being ignored. If you know the process, you can skip it (please do
not feel offended by me posting it here - no bad intentions intended).
If you do not know the process, here is a short explanation:

Please add Acked-by/Reviewed-by/Tested-by tags when posting new
versions, under or above your Signed-off-by tag. Tag is "received", when
provided in a message replied to you on the mailing list. Tools like b4
can help here. However, there's no need to repost patches *only* to add
the tags. The upstream maintainer will do that for tags received on the
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https://elixir.bootlin.com/linux/v6.5-rc3/source/Documentation/process/submitting-patches.rst#L577
</form letter>

Best regards,
Krzysztof