From 2e9b940f07b518c8a4c69122c5857cae7d2bbae7 Mon Sep 17 00:00:00 2001
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Tue, 19 May 2026 09:56:18 +0200
Subject: [PATCH] dt-bindings: soc: renesas: mfis: Add R-Car V4H/V4M support

The above SoCs have only 12 mailboxes and do not have an extra register
space for mailboxes.  Everything is contained in the common register
set.  In addition to adding these SoCs, the other entries get updated to
enforce 2 register spaces and their specific number of interrupts.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260519075620.4128-2-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 .../soc/renesas/renesas,r8a78000-mfis.yaml    | 38 ++++++++++++++++++-
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas,r8a78000-mfis.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas,r8a78000-mfis.yaml
index eef8c0a59e9c..72b9fa67d1f7 100644
--- a/Documentation/devicetree/bindings/soc/renesas/renesas,r8a78000-mfis.yaml
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas,r8a78000-mfis.yaml
@@ -19,25 +19,29 @@ description:
 properties:
   compatible:
     enum:
+      - renesas,r8a779g0-mfis       # R-Car V4H
+      - renesas,r8a779h0-mfis       # R-Car V4M
       - renesas,r8a78000-mfis       # R-Car X5H (AP<->AP, with PRR)
       - renesas,r8a78000-mfis-scp   # R-Car X5H (AP<->SCP, without PRR)
 
   reg:
+    minItems: 1
     maxItems: 2
 
   reg-names:
+    minItems: 1
     items:
       - const: common
       - const: mboxes
 
   interrupts:
-    minItems: 32
+    minItems: 12
     maxItems: 128
     description:
       The interrupts raised by the remote doorbells.
 
   interrupt-names:
-    minItems: 32
+    minItems: 12
     maxItems: 128
     description:
       An interrupt name is constructed with the prefix 'ch'. Then, the
@@ -56,6 +60,26 @@ properties:
       <dt-bindings/soc/renesas,r8a78000-mfis.h>.
 
 allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r8a779g0-mfis
+              - renesas,r8a779h0-mfis
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        reg-names:
+          maxItems: 1
+        interrupts:
+          maxItems: 12
+        interrupt-names:
+          maxItems: 12
+          items:
+            pattern: "^ch[0-9]+e$"
+
   - if:
       properties:
         compatible:
@@ -63,6 +87,10 @@ allOf:
             const: renesas,r8a78000-mfis
     then:
       properties:
+        reg:
+          minItems: 2
+        reg-names:
+          minItems: 2
         interrupts:
           minItems: 128
         interrupt-names:
@@ -77,9 +105,15 @@ allOf:
             const: renesas,r8a78000-mfis-scp
     then:
       properties:
+        reg:
+          minItems: 2
+        reg-names:
+          minItems: 2
         interrupts:
+          minItems: 32
           maxItems: 32
         interrupt-names:
+          minItems: 32
           maxItems: 32
           items:
             pattern: "^ch[0-9]+i$"