linux-kernel - [PATCH 2/5] dt-bindings: i2c: renesas,riic: Document R9A09G057 support

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Message-Id: <20240308172726.225357-3-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri,  8 Mar 2024 17:27:23 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Chris Brandt <chris.brandt@...esas.com>,
	Andi Shyti <andi.shyti@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: linux-renesas-soc@...r.kernel.org,
	linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 2/5] dt-bindings: i2c: renesas,riic: Document R9A09G057 support

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

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

The RIIC interface in the Renesas RZ/V2H differs from RZ/A in a
couple of ways:
- Register offsets for the RZ/V2H SoC differ from those of the RZ/A SoC.
- RZ/V2H register access is 8-bit, whereas RZ/A supports 8/16/32-bit.
- RZ/V2H has some 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@...renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>
---
 .../devicetree/bindings/i2c/renesas,riic.yaml | 21 ++++++++++++-------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
index 63ac5fe3208d..2a7125688647 100644
--- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
+++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml
@@ -15,14 +15,19 @@ 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      # generic RIIC compatible
+    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      # generic RIIC compatible
+
+      - items:
+          - enum:
+              - renesas,riic-r9a09g057  # RZ/V2H(P)
 
   reg:
     maxItems: 1
-- 
2.34.1