[PATCH 6.1.y-cip 79/85] dt-bindings: i2c: renesas,riic: Document R9A09G057 support

Tommaso Merciai
2025-03-13T01:33:26Z

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

commit c1f39c62eb09fa2e692a9377295ecbd0740c0914 upstream.

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, a new compatible string
"renesas,riic-r9a09g057" is added.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
---
.../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
--
2.43.0