diff mbox series

[v3,1/4] dt-bindings: i2c: renesas,riic: Document R9A09G057 support

Message ID 20240319132503.80628-2-prabhakar.mahadev-lad.rj@bp.renesas.com
State Accepted
Headers show
Series Add RIIC support for Renesas RZ/V2H SoC | expand

Commit Message

Lad, Prabhakar March 19, 2024, 1:25 p.m. UTC 
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, 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>
---
v2->v3
- Updated commit description

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(-)

Comments

Wolfram Sang March 20, 2024, 9:30 a.m. UTC | #1 
On Tue, Mar 19, 2024 at 01:25:00PM +0000, Prabhakar wrote:
> 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, 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>
diff mbox series

Patch

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