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@xxxxxx> --- 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; -- 2.7.4
