linux-kernel - Re: [PATCH v1 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC

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Message-ID: <1524dbc2-2c9a-476f-a06a-0d998c29534d@kernel.org>
Date: Tue, 15 Oct 2024 10:02:21 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Troy Mitchell <troymitchell988@...il.com>, andi.shyti@...nel.org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org
Cc: linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC

On 15/10/2024 09:51, Troy Mitchell wrote:
> The i2c of K1 supports fast-speed-mode and high-speed-mode,

s/i2c/I2C/

> and supports FIFO transmission.
> 
> Signed-off-by: Troy Mitchell <TroyMitchell988@...il.com>
> ---
>  .../bindings/i2c/spacemit,k1-i2c.yaml         | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
> 
> diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
> new file mode 100644
> index 000000000000..c1460ec2b323
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
> @@ -0,0 +1,59 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: I2C controller embedded in SpacemiT's K1 SoC
> +
> +maintainers:
> +  - Troy Mitchell <troymitchell988@...il.com>
> +
> +properties:
> +  compatible:
> +    const: spacemit,k1-i2c

There is no such vendor prefix.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-frequency:
> +    description:
> +      Desired I2C bus clock frequency in Hz. As only fast and high-speed
> +      modes are supported by hardware, possible values are 100000 and 400000.
> +    enum: [100000, 400000]
> +    default: 100000
> +
> +  fifo-disable:

Why is this a property of a board?

Also, missing vendor prefix.


> +    type: boolean
> +    description:
> +      Whether to disable FIFO. If FIFO is turned on, it will be interrupted
> +      only when the FIFO depth is reached, which can reduce the frequency
> +      of interruption.
> +    default: false

Drop

> +
> +unevaluatedProperties: false

This goes after required: block.


> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +examples:
> +  - |
> +    i2c0: i2c@...10800 {

Drop unused alias

> +        compatible = "spacemit,k1-i2c";

Best regards,
Krzysztof