From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Document the CAN-FD controller used on the RZ/T2H and RZ/N2H SoCs. The
CAN-FD IP is largely compatible with the R-Car Gen4 block, but differs
in that AFLPN and CFTML are different, there is no reset line for the IP,
and it only supports two channels.

Sync the resets and reset-names schema handling with other CAN-FD SoCs so
DT validation stays consistent and maintainable.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260114154525.3169992-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 .../bindings/net/can/renesas,rcar-canfd.yaml  | 48 +++++++++++++++++--
 1 file changed, 44 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
index fb709cfd26d7..b9d9dd7a7967 100644
--- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
@@ -12,6 +12,10 @@ maintainers:
 properties:
   compatible:
     oneOf:
+      - enum:
+          - renesas,r9a09g047-canfd        # RZ/G3E
+          - renesas,r9a09g077-canfd        # RZ/T2H
+
       - items:
           - enum:
               - renesas,r8a774a1-canfd     # RZ/G2M
@@ -42,14 +46,16 @@ properties:
               - renesas,r9a07g054-canfd    # RZ/V2L
           - const: renesas,rzg2l-canfd     # RZ/G2L family
 
-      - const: renesas,r9a09g047-canfd     # RZ/G3E
-
       - items:
           - enum:
               - renesas,r9a09g056-canfd     # RZ/V2N
               - renesas,r9a09g057-canfd     # RZ/V2H(P)
           - const: renesas,r9a09g047-canfd
 
+      - items:
+          - const: renesas,r9a09g087-canfd  # RZ/N2H
+          - const: renesas,r9a09g077-canfd
+
   reg:
     maxItems: 1
 
@@ -179,7 +185,6 @@ required:
   - clocks
   - clock-names
   - power-domains
-  - resets
   - assigned-clocks
   - assigned-clock-rates
   - channel0
@@ -243,11 +248,25 @@ allOf:
           minItems: 2
           maxItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g077-canfd
+    then:
+      properties:
+        interrupts:
+          maxItems: 8
+
+        interrupt-names:
+          maxItems: 8
+
   - if:
       properties:
         compatible:
           contains:
             enum:
+              - renesas,r9a09g077-canfd
               - renesas,rcar-gen3-canfd
               - renesas,rzg2l-canfd
     then:
@@ -296,6 +315,16 @@ allOf:
       properties:
         renesas,no-can-fd: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g077-canfd
+    then:
+      properties:
+        resets: false
+        reset-names: false
+
   - if:
       properties:
         compatible:
@@ -305,8 +334,19 @@ allOf:
               - renesas,rzg2l-canfd
     then:
       required:
+        - resets
         - reset-names
-    else:
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,rcar-gen3-canfd
+              - renesas,rcar-gen4-canfd
+    then:
+      required:
+        - resets
       properties:
         reset-names: false
 
-- 
2.51.0