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From: Prabhakar <prabhakar.csengg@gmail.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
	Chris Brandt <chris.brandt@renesas.com>,
	Andi Shyti <andi.shyti@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>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-renesas-soc@vger.kernel.org,
	linux-i2c@vger.kernel.org,
	devicetree@vger.kernel.org,
	linux-kernel@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 1/4] dt-bindings: i2c: renesas,riic: Document R9A09G057 support
Date: Fri, 15 Mar 2024 10:30:30 +0000
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From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Document support for the I2C Bus Interface (RIIC) available in the
Renesas RZ/V2H(P) (R9A09G057) SoC.

The RIIC interface in the Renesas RZ/V2H(P) differs from RZ/A in a
couple of ways:
- Register offsets for the RZ/V2H(P) SoC differ from those of the
  RZ/A SoC.
- RZ/V2H register access is limited to 8-bit, whereas RZ/A supports
  8/16/32-bit.
- RZ/V2H has bit differences in the slave address register.

To accommodate these differences in the existing driver, a new compatible
string "renesas,riic-r9a09g057" is added.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v1->v2
- Used a const for V2H SoC instead of enum in items list
---
 .../devicetree/bindings/i2c/renesas,riic.yaml | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
index 2291a7cd619b..91ecf17b7a81 100644
--- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
+++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
@@ -15,14 +15,17 @@ allOf:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - renesas,riic-r7s72100   # RZ/A1H
-          - renesas,riic-r7s9210    # RZ/A2M
-          - renesas,riic-r9a07g043  # RZ/G2UL and RZ/Five
-          - renesas,riic-r9a07g044  # RZ/G2{L,LC}
-          - renesas,riic-r9a07g054  # RZ/V2L
-      - const: renesas,riic-rz      # RZ/A or RZ/G2L
+    oneOf:
+      - items:
+          - enum:
+              - renesas,riic-r7s72100   # RZ/A1H
+              - renesas,riic-r7s9210    # RZ/A2M
+              - renesas,riic-r9a07g043  # RZ/G2UL and RZ/Five
+              - renesas,riic-r9a07g044  # RZ/G2{L,LC}
+              - renesas,riic-r9a07g054  # RZ/V2L
+          - const: renesas,riic-rz      # RZ/A or RZ/G2L
+
+      - const: renesas,riic-r9a09g057   # RZ/V2H(P)
 
   reg:
     maxItems: 1
-- 
2.34.1