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[v4,02/11] dt-bindings: can: renesas,rcar-canfd: Document RZ/G3E support

Message ID 20250306124256.93033-3-biju.das.jz@bp.renesas.com (mailing list archive)
State New
Delegated to: Geert Uytterhoeven
Headers show
Series Add support for RZ/G3E CANFD | expand

Commit Message

Biju Das March 6, 2025, 12:42 p.m. UTC 
Document support for the CAN-FD Interface on the RZ/G3E (R9A09G047) SoC,
which supports up to six channels.

The CAN-FD module on RZ/G3E is very similar to the one on both R-Car V4H
and RZ/G2L, but differs in some hardware parameters:
 * No external clock, but instead has ram clock.
 * Support up to 6 channels.
 * 20 interrupts.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v3->v4:
 * Added Rb tag from Rob.
v2->v3:
 * Replaced maxItems->minItems: 20 for RZ/G3E interrupt,s as the list has 20
   elements and for existing platforms dropped minItems and keep maxItems: 8.
v1->v2:
 * No change.
---
 .../bindings/net/can/renesas,rcar-canfd.yaml  | 69 +++++++++++++++++--
 1 file changed, 62 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
index f87f90f431e5..47967e944710 100644
--- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
@@ -42,6 +42,8 @@  properties:
               - renesas,r9a07g054-canfd    # RZ/V2L
           - const: renesas,rzg2l-canfd     # RZ/G2L family
 
+      - const: renesas,r9a09g047-canfd     # RZ/G3E
+
   reg:
     maxItems: 1
 
@@ -59,6 +61,19 @@  properties:
           - description: CAN1 error interrupt
           - description: CAN1 transmit interrupt
           - description: CAN1 transmit/receive FIFO receive completion interrupt
+          - description: CAN2 error interrupt
+          - description: CAN2 transmit interrupt
+          - description: CAN2 transmit/receive FIFO receive completion interrupt
+          - description: CAN3 error interrupt
+          - description: CAN3 transmit interrupt
+          - description: CAN3 transmit/receive FIFO receive completion interrupt
+          - description: CAN4 error interrupt
+          - description: CAN4 transmit interrupt
+          - description: CAN4 transmit/receive FIFO receive completion interrupt
+          - description: CAN5 error interrupt
+          - description: CAN5 transmit interrupt
+          - description: CAN5 transmit/receive FIFO receive completion interrupt
+        minItems: 8
 
   interrupt-names:
     oneOf:
@@ -74,15 +89,33 @@  properties:
           - const: ch1_err
           - const: ch1_rec
           - const: ch1_trx
+          - const: ch2_err
+          - const: ch2_rec
+          - const: ch2_trx
+          - const: ch3_err
+          - const: ch3_rec
+          - const: ch3_trx
+          - const: ch4_err
+          - const: ch4_rec
+          - const: ch4_trx
+          - const: ch5_err
+          - const: ch5_rec
+          - const: ch5_trx
+        minItems: 8
 
   clocks:
     maxItems: 3
 
   clock-names:
-    items:
-      - const: fck
-      - const: canfd
-      - const: can_clk
+    oneOf:
+      - items:
+          - const: fck
+          - const: canfd
+          - const: can_clk
+      - items:
+          - const: fck
+          - const: ram_clk
+          - const: can_clk
 
   power-domains:
     maxItems: 1
@@ -145,11 +178,9 @@  allOf:
     then:
       properties:
         interrupts:
-          minItems: 8
           maxItems: 8
 
         interrupt-names:
-          minItems: 8
           maxItems: 8
 
   - if:
@@ -173,7 +204,9 @@  allOf:
       properties:
         compatible:
           contains:
-            const: renesas,rzg2l-canfd
+            enum:
+              - renesas,r9a09g047-canfd
+              - renesas,rzg2l-canfd
     then:
       properties:
         resets:
@@ -187,6 +220,19 @@  allOf:
       required:
         - reset-names
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g047-canfd
+    then:
+      properties:
+        interrupts:
+          minItems: 20
+
+        interrupt-names:
+          minItems: 20
+
   - if:
       properties:
         compatible:
@@ -219,6 +265,15 @@  allOf:
       patternProperties:
         "^channel[4-7]$": false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g047-canfd
+    then:
+      patternProperties:
+        "^channel[6-7]$": false
+
 unevaluatedProperties: false
 
 examples: