[PATCH/RFC 1/9] dt-bindings: can: renesas,rcar-canfd: Document R-Car X5H support

[Geert Uytterhoeven]

Document support for the Controller Area Network Flexible Data Rate
(CAN-FD) modules as found on R-Car X5H, which is the first member of the
R-Car Gen5 family.  It is a further evolution of the CAN-FD block found
on R-Car Gen4 SoCs, adding Freedom From Interference and Virtual Machine
support.

Binding-wise, the major difference is the split of global and
per-channel interrupts (like on RZ/G2L), and the addition of Virtual
Machine interrupts.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
Do we need the VM interrupts, or are they meant for the hypervisor?
If yes, should we add a third option for interrupts and interrupt-names:
  - 2 global interrupts,
  - 8 VM interrupts,
  - 8 (= number of channels) x 3 channel interrupts,
so we can easily restrict the number of interrupts when a variant with
less than 8 channels appears?
---
 .../bindings/net/can/renesas,rcar-canfd.yaml  | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
index 470d178e5faccf6a..2d36d63b281e30b2 100644
--- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
@@ -40,6 +40,11 @@ properties:
               - renesas,r8a779h0-canfd     # R-Car V4M
           - const: renesas,rcar-gen4-canfd # R-Car Gen4
 
+      - items:
+          - enum:
+              - renesas,r8a78000-canfd     # R-Car X5H
+          - const: renesas,rcar-gen5-canfd # R-Car Gen5
+
       - items:
           - enum:
               - renesas,r9a07g043-canfd    # RZ/G2UL and RZ/Five
@@ -86,6 +91,36 @@ properties:
           - description: CAN5 error interrupt
           - description: CAN5 transmit interrupt
           - description: CAN5 transmit/receive FIFO receive completion interrupt
+          - description: CAN6 error interrupt
+          - description: CAN6 transmit interrupt
+          - description: CAN6 transmit/receive FIFO receive completion interrupt
+          - description: CAN7 error interrupt
+          - description: CAN7 transmit interrupt
+          - description: CAN7 transmit/receive FIFO receive completion interrupt
+          - description: Virtual Machine 0 transmit interrupt
+          - description: Virtual Machine 0 receive interrupt
+          - description: Virtual Machine 0 error interrupt
+          - description: Virtual Machine 1 transmit interrupt
+          - description: Virtual Machine 1 receive interrupt
+          - description: Virtual Machine 1 error interrupt
+          - description: Virtual Machine 2 transmit interrupt
+          - description: Virtual Machine 2 receive interrupt
+          - description: Virtual Machine 2 error interrupt
+          - description: Virtual Machine 3 transmit interrupt
+          - description: Virtual Machine 3 receive interrupt
+          - description: Virtual Machine 3 error interrupt
+          - description: Virtual Machine 4 transmit interrupt
+          - description: Virtual Machine 4 receive interrupt
+          - description: Virtual Machine 4 error interrupt
+          - description: Virtual Machine 5 transmit interrupt
+          - description: Virtual Machine 5 receive interrupt
+          - description: Virtual Machine 5 error interrupt
+          - description: Virtual Machine 6 transmit interrupt
+          - description: Virtual Machine 6 receive interrupt
+          - description: Virtual Machine 6 error interrupt
+          - description: Virtual Machine 7 transmit interrupt
+          - description: Virtual Machine 7 receive interrupt
+          - description: Virtual Machine 7 error interrupt
         minItems: 8
 
   interrupt-names:
@@ -114,6 +149,36 @@ properties:
           - const: ch5_err
           - const: ch5_rec
           - const: ch5_trx
+          - const: ch6_err
+          - const: ch6_rec
+          - const: ch6_trx
+          - const: ch7_err
+          - const: ch7_rec
+          - const: ch7_trx
+          - const: vm0_tx
+          - const: vm0_rx
+          - const: vm0_err
+          - const: vm1_tx
+          - const: vm1_rx
+          - const: vm1_err
+          - const: vm2_tx
+          - const: vm2_rx
+          - const: vm2_err
+          - const: vm3_tx
+          - const: vm3_rx
+          - const: vm3_err
+          - const: vm4_tx
+          - const: vm4_rx
+          - const: vm4_err
+          - const: vm5_tx
+          - const: vm5_rx
+          - const: vm5_err
+          - const: vm6_tx
+          - const: vm6_rx
+          - const: vm6_err
+          - const: vm7_tx
+          - const: vm7_rx
+          - const: vm7_err
         minItems: 8
 
   clocks:
@@ -232,6 +297,22 @@ allOf:
         resets:
           maxItems: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,rcar-gen5-canfd
+    then:
+      properties:
+        interrupts:
+          minItems: 50
+
+        interrupt-names:
+          minItems: 50
+
+        resets:
+          maxItems: 1
+
   - if:
       properties:
         compatible:
@@ -241,9 +322,11 @@ allOf:
       properties:
         interrupts:
           minItems: 20
+          maxItems: 20
 
         interrupt-names:
           minItems: 20
+          maxItems: 20
 
         resets:
           minItems: 2
@@ -354,6 +437,7 @@ allOf:
             enum:
               - renesas,rcar-gen3-canfd
               - renesas,rcar-gen4-canfd
+              - renesas,rcar-gen5-canfd
     then:
       required:
         - resets
-- 
2.43.0