linux-kernel - Re: [PATCH] ARM: dts: stm32: set i2c4 bus freq to 400KHz on stm32mp157c-ed1

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Message-ID: <9c127dfe-d171-8967-3227-3dafc358277f@st.com>
Date:   Fri, 13 Mar 2020 13:49:55 +0100
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Alain Volmat <alain.volmat@...com>, <wsa@...-dreams.de>,
        <robh+dt@...nel.org>
CC:     <mark.rutland@....com>, <pierre-yves.mordret@...com>,
        <mcoquelin.stm32@...il.com>, <linux-i2c@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <fabrice.gasnier@...com>
Subject: Re: [PATCH] ARM: dts: stm32: set i2c4 bus freq to 400KHz on
 stm32mp157c-ed1

Hi Alain

On 2/10/20 6:17 PM, Alain Volmat wrote:
> On this board, the I2C4 bus has only a single slave (pmic) which
> supports I2C Fast Mode hence setting bus frequency to 400 KHz.
> 
> Signed-off-by: Alain Volmat <alain.volmat@...com>
> ---
>   arch/arm/boot/dts/stm32mp157c-ed1.dts | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts b/arch/arm/boot/dts/stm32mp157c-ed1.dts
> index 209dae010be4..ac4f7ee4ad55 100644
> --- a/arch/arm/boot/dts/stm32mp157c-ed1.dts
> +++ b/arch/arm/boot/dts/stm32mp157c-ed1.dts
> @@ -135,6 +135,7 @@
>   	pinctrl-0 = <&i2c4_pins_sleep_a>;
>   	i2c-scl-rising-time-ns = <185>;
>   	i2c-scl-falling-time-ns = <20>;
> +	clock-frequency = <400000>;
>   	status = "okay";
>   	/* spare dmas for other usage */
>   	/delete-property/dmas;
> 

Applied on stm32-next.

Thanks.
Alex