WIFI / 蓝牙模块设备树配置
AP6212 模块在设备树中配置如下：
wireless-bluetooth {
compatible = "bluetooth-platdata";
clocks = <&rk818 1>;
clock-names = "ext_clock";
pinctrl-names = "default","rts_gpio";
pinctrl-0 = <&uart0_rts>;
pinctrl-1 = <&uart0_gpios>;
uart_rts_gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_LOW>;
BT,power_gpio = <&gpio3 RK_PA3 GPIO_ACTIVE_HIGH>;
BT,wake_gpio = <&gpio3 RK_PA2 GPIO_ACTIVE_HIGH>;
BT,wake_host_irq = <&gpio3 RK_PA7 GPIO_ACTIVE_LOW>;
status = "okay";
};
wireless-wlan {
compatible = "wlan-platdata";
rockchip,grf = <&grf>;
/* wifi_chip_type - wifi chip define
* ap6210, ap6330, ap6335
* rtl8188eu, rtl8723bs, rtl8723bu
* esp8089
*/
wifi_chip_type = "ap6212";
sdio_vref = <1800>;
WIFI,host_wake_irq = <&gpio3 RK_PA6 GPIO_ACTIVE_LOW>;
status = "okay";
};
sdio_pwrseq: sdio-pwrseq {
compatible = "mmc-pwrseq-simple";
clocks = <&rk818 1>;
clock-names = "ext_clock";
pinctrl-names = "default";
pinctrl-0 = <&wifi_enable_h>;
/*
* On the module itself this is one of these (depending
* on the actual card populated):
* - SDIO_RESET_L_WL_REG_ON
* - PDN (power down when low)
*/
reset-gpios = <&gpio3 RK_PA4 GPIO_ACTIVE_LOW>; /* GPIO3_A4 */
};
&uart0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&uart0_xfer>, <&uart0_cts>;
};蓝牙驱动代码路径：
net/rfkill/rfkill-bt.c，net/bluetooth，drivers/bluetooth/
WIFI 驱动代码路径：
配置wifi固件路径 drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c ，wifi 模块驱动 net/rfkill/rfkill-wlan.c