From d50807fee6aced4d82e14fd7894ad5ed8db438b1 Mon Sep 17 00:00:00 2001
From: Gatien Chevallier <gatien.chevallier@foss.st.com>
Date: Thu, 6 Nov 2025 10:31:48 +0100
Subject: [PATCH] dt-bindings: bus: add stm32mp21 RIFSC compatible

The STM32MP21x platforms have a slightly different RIFSC. While its
core functionalities are similar, the wiring is not the same. Hence,
declare a new compatible.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20251106-rifsc_debugfs-v2-1-f90e94ae756d@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---
 .../devicetree/bindings/bus/st,stm32mp25-rifsc.yaml       | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml
index 20acd1a6b173..3952c99cac6b 100644
--- a/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml
+++ b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml
@@ -33,14 +33,18 @@ select:
   properties:
     compatible:
       contains:
-        const: st,stm32mp25-rifsc
+        enum:
+          - st,stm32mp21-rifsc
+          - st,stm32mp25-rifsc
   required:
     - compatible
 
 properties:
   compatible:
     items:
-      - const: st,stm32mp25-rifsc
+      - enum:
+          - st,stm32mp21-rifsc
+          - st,stm32mp25-rifsc
       - const: simple-bus
 
   reg: