Tukukkk

I have a RK3288 based custom board with AP6212A wifi/bt chipset. I am using rockhip-linux 4.4 with bcmdhd driver. It is using the SDIO protocol. After the driver loads the kernel freezes when it tries to execute the command "WLC_UP" anywhere in the driver.

dhd_conf_set_intiovar(dhd, WLC_UP, "up", 0, 0, FALSE);

The console gets frozen and also HDMI is freezes as well. If I comment the lines with WLC_UP in the driver, then I get a normal boot and also wlan0 gets registered and is up but cannot scan or connect to wifi.

Here is the dts snipper for sdio

wireless-bluetooth {

    compatible = "bluetooth-platdata";

    clocks = <&rk818 1>;

    clock-names = "ext_clock";

    uart_rts_gpios = <&gpio4 19 GPIO_ACTIVE_LOW>;

    pinctrl-names = "default", "rts_gpio";

    pinctrl-0 = <&uart0_rts>;

    pinctrl-1 = <&uart0_gpios>;

    BT,reset_gpio    = <&gpio4 29 GPIO_ACTIVE_HIGH>;

    BT,wake_gpio     = <&gpio4 26 GPIO_ACTIVE_HIGH>;

    BT,wake_host_irq = <&gpio4 31 GPIO_ACTIVE_HIGH>;

    status = "okay";

};



wireless-wlan {

    compatible = "wlan-platdata";

    rockchip,grf = <&grf>;

    wifi_chip_type = "ap6212";

    sdio_vref = <1800>;

    WIFI,host_wake_irq = <&gpio4 30 GPIO_ACTIVE_HIGH>;

    status = "okay";

};

&sdio0 {

clock-frequency = <50000000>;

clock-freq-min-max = <200000 50000000>;



bus-width = <4>;

cap-sd-highspeed;

cap-sdio-irq;

disable-wp;

ignore-pm-notify;

keep-power-in-suspend;

mmc-pwrseq = <&sdio_pwrseq>;

non-removable;

num-slots = <1>;

pinctrl-names = "default";

pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk &sdio0_int>;

sd-uhs-sdr104;

supports-sdio;

vmmc-supply = <&vcc_wlin>;

vqmmc-supply = <&vccio_wl>;

status = "okay";

};

Can anyone please help me ?