Is it mandatory to use CD for WIFI which is connected to SD interface?

[johnwesley]

Hi all,

I am using IMX6SL processor with WIFI_BT module of TI WL1835 which is connected to SD3 interface. In our hardware I have not connected CD(card detect) pin of processor which is left floating. since module doesn't have CD pin.

Could you please reply soon since I have loaded driver from TI where I can't able to see WIFI device in SD3 slot while running kernel.

Thanks in advance,

John Wesley.

[igorpadykov]

Hi John

one can change imx6sl-evk-common.dtsi cd-gpios to “non-removable”

&usdhc3 {

    pinctrl-names = "default", "state_100mhz", "state_200mhz";

    pinctrl-0 = <&pinctrl_usdhc3_1>;

    pinctrl-1 = <&pinctrl_usdhc3_1_100mhz>;

    pinctrl-2 = <&pinctrl_usdhc3_1_200mhz>;

    cd-gpios = <&gpio3 22 0>;

    keep-power-in-suspend;

    enable-sdio-wakeup;

    status = "okay";

};

http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/mmc/mmc.txt

Best regards

igor

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