的例子,晶振时钟和复位-使能的GPIO的选择按照实际板级硬件要求进行配置。
sdio_pwrseq: sdio-pwrseq
{ compatible = "mmc-pwrseq-simple";
clocks = <&rk808 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 = <&gpio0 10 GPIO_ACTIVE_LOW>;
/* GPIO0_B2 */
};