Function awusb3phy_phy_enable

freebsd/arm/allwinner/aw_usb3phy.c:111–175

#define	WR4(res, o, v)	bus_write_4(res, (o), (v))

static int
awusb3phy_phy_enable(struct phynode *phynode, bool enable)
{
	struct awusb3phy_softc *sc;
	device_t dev;
	uint32_t val;
	int error = 0;

	dev = phynode_get_device(phynode);
	sc = device_get_softc(dev);

	device_printf(dev, "%s: called\n", __func__);

	if (enable) {
		val = RD4(sc->res, USB3PHY_PHY_EXTERNAL_CONTROL);
		device_printf(dev, "EXTERNAL_CONTROL: %x\n", val);
		val |= PEC_EXTERN_VBUS;
		val |= PEC_SSC_EN;
		val |= PEC_REF_SSP_EN;
		device_printf(dev, "EXTERNAL_CONTROL: %x\n", val);
		WR4(sc->res, USB3PHY_PHY_EXTERNAL_CONTROL, val);

		val = RD4(sc->res, USB3PHY_PIPE_CLOCK_CONTROL);
		device_printf(dev, "PIPE_CONTROL: %x\n", val);
		val |= PCC_PIPE_CLK_OPEN;
		device_printf(dev, "PIPE_CONTROL: %x\n", val);
		WR4(sc->res, USB3PHY_PIPE_CLOCK_CONTROL, val);

		val = RD4(sc->res, USB3PHY_APP);
		device_printf(dev, "APP: %x\n", val);
		val |= APP_FORCE_VBUS;
		device_printf(dev, "APP: %x\n", val);
		WR4(sc->res, USB3PHY_APP, val);

		WR4(sc->res, USB3PHY_PHY_TUNE_LOW, PTL_MAGIC);

		val = RD4(sc->res, USB3PHY_PHY_TUNE_HIGH);
		device_printf(dev, "PHY_TUNE_HIGH: %x\n", val);
		val |= PTH_TX_BOOST_LVL;
		val |= PTH_LOS_BIAS;
		val &= ~PTH_TX_SWING_FULL;
		val |= __SHIFTIN(0x55, PTH_TX_SWING_FULL);
		val &= ~PTH_TX_DEEMPH_6DB;
		val |= __SHIFTIN(0x20, PTH_TX_DEEMPH_6DB);
		val &= ~PTH_TX_DEEMPH_3P5DB;
		val |= __SHIFTIN(0x15, PTH_TX_DEEMPH_3P5DB);
		device_printf(dev, "PHY_TUNE_HIGH: %x\n", val);
		WR4(sc->res, USB3PHY_PHY_TUNE_HIGH, val);

		if (sc->reg)
			error = regulator_enable(sc->reg);
	} else {
		if (sc->reg)
			error = regulator_disable(sc->reg);
	}

	if (error != 0) {
		device_printf(dev,