linux-kernel - Re: [PATCH v2 3/9] dt-bindings: pwm: Update DT binding docs to support SiFive FU740 SoC

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Message-ID: <20201210035645.GA1633151@robh.at.kernel.org>
Date:   Wed, 9 Dec 2020 21:56:45 -0600
From:   Rob Herring <robh@...nel.org>
To:     Yash Shah <yash.shah@...ive.com>
Cc:     linux-spi@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
        broonie@...nel.org, gregkh@...uxfoundation.org,
        aou@...s.berkeley.edu, lee.jones@...aro.org,
        u.kleine-koenig@...gutronix.de, thierry.reding@...il.com,
        andrew@...n.ch, peter@...sgaard.com, paul.walmsley@...ive.com,
        palmer@...belt.com, bgolaszewski@...libre.com,
        linus.walleij@...aro.org
Subject: Re: [PATCH v2 3/9] dt-bindings: pwm: Update DT binding docs to
 support SiFive FU740 SoC

On Tue, Dec 08, 2020 at 10:25:35AM +0530, Yash Shah wrote:
> Add new compatible strings to the DT binding documents to support SiFive
> FU740-C000.
> 
> Signed-off-by: Yash Shah <yash.shah@...ive.com>
> ---
>  Documentation/devicetree/bindings/pwm/pwm-sifive.yaml | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
> index 5ac2527..84e6691 100644
> --- a/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
> +++ b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
> @@ -25,12 +25,15 @@ description:
>  properties:
>    compatible:
>      items:
> -      - const: sifive,fu540-c000-pwm
> +      - enum:
> +          - sifive,fu540-c000-pwm
> +          - sifive,fu740-c000-pwm
>        - const: sifive,pwm0
>      description:
>        Should be "sifive,<chip>-pwm" and "sifive,pwm<version>". Supported
> -      compatible strings are "sifive,fu540-c000-pwm" for the SiFive PWM v0
> -      as integrated onto the SiFive FU540 chip, and "sifive,pwm0" for the
> +      compatible strings are "sifive,fu540-c000-pwm" and
> +      "sifive,fu740-c000-pwm" for the SiFive PWM v0 as integrated onto the
> +      SiFive FU540 and FU740 chip respectively, and "sifive,pwm0" for the

Better if you reword this so we don't have to update it for every new 
compatible.

>        SiFive PWM v0 IP block with no chip integration tweaks.
>        Please refer to sifive-blocks-ip-versioning.txt for details.
>  
> -- 
> 2.7.4
>