Re: [Linux-stm32] [PATCH v3 3/3] ARM: dts: stm32: add initial support for stm32mp157-odyssey board

[Christophe Kerello]

Hello Marcin,

On 7/21/20 8:53 PM, Marcin Sloniewski wrote:
> +&sdmmc2 {
> +	pinctrl-names = "default", "opendrain", "sleep";
> +	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
> +	pinctrl-1 = <&sdmmc2_b4_od_pins_a &sdmmc2_d47_pins_a>;
> +	pinctrl-2 = <&sdmmc2_b4_sleep_pins_a &sdmmc2_d47_sleep_pins_a>;
> +	non-removable;
> +	no-sd;
> +	no-sdio;
> +	st,neg-edge;
> +	bus-width = <4>;
> +	vmmc-supply = <&v3v3>;
> +	vqmmc-supply = <&v3v3>;
> +	mmc-ddr-3_3v;
> +	status = "okay";
> +};

Based on the pins muxed, 8 data lines are configured, but the bus width 
is set to 4. What is the reason of not setting this property to 8?

Regards,
Christophe Kerello.