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这个应该是和板子有关系,USB的初始化只是把VBUSDRV设为本来功能,BB和GPEVM应该还把这个脚连成GPIO了,所以要做下初始化。但是SKEVM的板子这个脚应该是只给USB用了
不懂您的意思
BBB 是在哪把這腳位設定為GPIO呢? UBOOT嗎??
static void usb0_init(int evm_id, int profile)
{
setup_pin_mux(usb0_pin_mux);
return;
}
/* pinmux for usb0 drvvbus */
static struct pinmux_config usb0_pin_mux[] = {
{"usb0_drvvbus.usb0_drvvbus", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{NULL, 0},
};