diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2025-06-25 11:45:23 +0100 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@kernel.org> | 2025-07-24 00:37:59 +0200 |
| commit | 13aa792c10ada4f8870da5ba0fb51e478eb5a45e (patch) | |
| tree | de2f07c11d0aae7f9a55e3adb65e5d75de39aada | |
| parent | be221173ee918dff2adaf0e23b03aeea44902d5e (diff) | |
dt-bindings: i2c: renesas,riic: Document RZ/T2H and RZ/N2H support
Document support for the I2C Bus Interface (RIIC) found on the Renesas
RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs.
The RIIC IP on these parts is similar to that on RZ/V2H(P) but supports
only four interrupts (including a combined error/event), lacks FM+ mode,
and does not require reset. Introduce a new compatible string
`renesas,riic-r9a09g077` for RZ/T2H and use it as a fallback for RZ/N2H.
Unlike earlier SoCs that use eight distinct interrupts, the RZ/T2H uses
only four. Update the binding schema to reflect this interrupt layout
and skip the `resets` property check, as it is not required on these SoCs.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250625104526.101004-3-prabhakar.mahadev-lad.rj@bp.renesas.com
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/renesas,riic.yaml | 75 |
1 files changed, 56 insertions, 19 deletions
diff --git a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml index bfcc400655dc..6876eade431b 100644 --- a/Documentation/devicetree/bindings/i2c/renesas,riic.yaml +++ b/Documentation/devicetree/bindings/i2c/renesas,riic.yaml @@ -29,32 +29,50 @@ properties: - renesas,riic-r9a09g056 # RZ/V2N - const: renesas,riic-r9a09g057 # RZ/V2H(P) - - const: renesas,riic-r9a09g057 # RZ/V2H(P) + - enum: + - renesas,riic-r9a09g057 # RZ/V2H(P) + - renesas,riic-r9a09g077 # RZ/T2H + + - items: + - const: renesas,riic-r9a09g087 # RZ/N2H + - const: renesas,riic-r9a09g077 # RZ/T2H reg: maxItems: 1 interrupts: - items: - - description: Transmit End Interrupt - - description: Receive Data Full Interrupt - - description: Transmit Data Empty Interrupt - - description: Stop Condition Detection Interrupt - - description: Start Condition Detection Interrupt - - description: NACK Reception Interrupt - - description: Arbitration-Lost Interrupt - - description: Timeout Interrupt + oneOf: + - items: + - description: Transmit End Interrupt + - description: Receive Data Full Interrupt + - description: Transmit Data Empty Interrupt + - description: Stop Condition Detection Interrupt + - description: Start Condition Detection Interrupt + - description: NACK Reception Interrupt + - description: Arbitration-Lost Interrupt + - description: Timeout Interrupt + - items: + - description: Transfer Error Or Event Generation + - description: Receive Data Full Interrupt + - description: Transmit Data Empty Interrupt + - description: Transmit End Interrupt interrupt-names: - items: - - const: tei - - const: ri - - const: ti - - const: spi - - const: sti - - const: naki - - const: ali - - const: tmoi + oneOf: + - items: + - const: tei + - const: ri + - const: ti + - const: spi + - const: sti + - const: naki + - const: ali + - const: tmoi + - items: + - const: eei + - const: rxi + - const: txi + - const: tei clock-frequency: description: @@ -88,6 +106,25 @@ allOf: properties: compatible: contains: + const: renesas,riic-r9a09g077 + then: + properties: + interrupts: + maxItems: 4 + interrupt-names: + maxItems: 4 + resets: false + else: + properties: + interrupts: + minItems: 8 + interrupt-names: + minItems: 8 + + - if: + properties: + compatible: + contains: enum: - renesas,riic-r9a07g043 - renesas,riic-r9a07g044 |