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

Alexandre Torgue alexandre.torgue at st.com
Fri Mar 13 12:49:55 UTC 2020


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 at st.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



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