i.MX6Q Sabre SD2 CD &WP pins are not used

[norishinozaki]

Hello Champs,

In the i.MX6Q Sabre SD, SD2 and SD3's CD and WP pins look able to be used as are the functions.

However these CD and SP are not used in Sabre BSP but GPIOs are used for the functions.

In 3.14.28 dbs:

        pinctrl-0 = <&pinctrl_usdhc3>;

        cd-gpios = <&gpio2 0 0>;

        wp-gpios = <&gpio2 1 0>;

Could you explain what is the reason?

Can we simply do like this ?

        .cd_gpio = SABRESD_SD2_CD,

        .wp_gpio = SABRESD_SD2_WP,

BR,

N.S.

[igorpadykov · Accepted solution]

Hi Nori

that may be done due to board routing convenience, as for usage native

cd,wp - this is described in linux documentation

linux-2.6-imx.git - Freescale i.MX Linux Tree

Best regards

igor

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[norishinozaki]

Hello Igor,

Thanks let me know the document!

BR,

N.Shinozaki

[igorpadykov]

Hi Nori

it is in linux/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt

Best regards

igor