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From: Prabhakar <prabhakar.csengg@gmail.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Magnus Damm <magnus.damm@gmail.com>
Cc: linux-kernel@vger.kernel.org,
	linux-serial@vger.kernel.org,
	devicetree@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Prabhakar <prabhakar.csengg@gmail.com>,
	Fabrizio Castro <fabrizio.castro.jz@renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH v2] dt-bindings: serial: renesas,scif: Document R9A09G057 support
Date: Thu,  7 Mar 2024 11:47:31 +0000
Message-Id: <20240307114731.34953-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
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From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Document support for the Serial Communication Interface with FIFO (SCIF)
available in the Renesas RZ/V2H(P) (R9A09G057) SoC. The SCIF interface in
the Renesas RZ/V2H(P) is similar to that available in the RZ/G2L
(R9A07G044) SoC, with the only difference being that the RZ/V2H(P) SoC has
three additional interrupts: one for Tx end/Rx ready and the other two for
Rx and Tx buffer full, which are edge-triggered.

No driver changes are required as generic compatible string
"renesas,scif-r9a07g044" will be used as a fallback on RZ/V2H(P) SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
v1->v2
* Added validation to check interrupts and interrupt-names count

Note, this patch applies on top of series [0].

[0] https://patchwork.ozlabs.org/project/devicetree-bindings/cover/20240307114217.34784-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
---
 .../bindings/serial/renesas,scif.yaml         | 31 ++++++++++++++++---
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index 6ba6b6d52208..a9c60334d702 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -77,6 +77,7 @@ properties:
               - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
               - renesas,scif-r9a07g054      # RZ/V2L
               - renesas,scif-r9a08g045      # RZ/G3S
+              - renesas,scif-r9a09g057      # RZ/V2H(P)
           - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
 
   reg:
@@ -91,6 +92,9 @@ properties:
       - description: Break interrupt
       - description: Data Ready interrupt
       - description: Transmit End interrupt
+      - description: Transmit End/Data Ready interrupt
+      - description: Receive buffer full interrupt (EDGE trigger)
+      - description: Transmit buffer empty interrupt (EDGE trigger)
 
   interrupt-names:
     minItems: 4
@@ -101,6 +105,9 @@ properties:
       - const: bri
       - const: dri
       - const: tei
+      - const: teidri
+      - const: rxi-edge
+      - const: txi-edge
 
   clocks:
     minItems: 1
@@ -197,15 +204,31 @@ allOf:
         compatible:
           contains:
             enum:
-              - renesas,scif-r7s9210
-              - renesas,scif-r9a07g044
+              - renesas,scif-r9a09g057
     then:
       properties:
         interrupts:
-          minItems: 6
+          minItems: 9
 
         interrupt-names:
-          minItems: 6
+          minItems: 9
+    else:
+      if:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - renesas,scif-r7s9210
+                - renesas,scif-r9a07g044
+      then:
+        properties:
+          interrupts:
+            minItems: 6
+            maxItems: 6
+
+          interrupt-names:
+            minItems: 6
+            maxItems: 6
 
 unevaluatedProperties: false
 
-- 
2.34.1