linux-kernel - Re: [PATCH] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100kHz

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Date:   Tue, 20 Aug 2019 07:08:09 -0700
From:   Chris Healy <cphealy@...il.com>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100kHz

On Mon, Aug 19, 2019 at 8:08 PM Andrey Smirnov <andrew.smirnov@...il.com> wrote:
>
> Fiber-optic module attached to the bus is only rated to work at
> 100kHz, so drop the bus frequncy to accomodate that.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
> Cc: Shawn Guo <shawnguo@...nel.org>
> Cc: Chris Healy <cphealy@...il.com>
> Cc: Fabio Estevam <festevam@...il.com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  arch/arm/boot/dts/vf610-zii-cfu1.dts | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/vf610-zii-cfu1.dts b/arch/arm/boot/dts/vf610-zii-cfu1.dts
> index ff460a1de85a..28732249cfc0 100644
> --- a/arch/arm/boot/dts/vf610-zii-cfu1.dts
> +++ b/arch/arm/boot/dts/vf610-zii-cfu1.dts
> @@ -207,7 +207,7 @@
>  };
>
>  &i2c0 {
> -       clock-frequency = <400000>;
> +       clock-frequency = <100000>;
>         pinctrl-names = "default";
>         pinctrl-0 = <&pinctrl_i2c0>;
>         status = "okay";
> --
> 2.21.0
>

Reviewed-by: Chris Healy <cphealy@...il.com>