PLLEN
ret = regmap_write(tc->regmap, pllctrl, PLLUPDATE | PLLEN);
ret = regmap_write(tc->regmap, PXL_PLLCTRL, PLLBYP | PLLEN);
stm32_usbphyc_clr_bits(pll_reg, PLLEN);
if (readl_relaxed_poll_timeout(pll_reg, pllen, !(pllen & PLLEN), 5, 50))
bool pllen = readl_relaxed(pll_reg) & PLLEN;
stm32_usbphyc_set_bits(pll_reg, PLLEN);
stm32_usbphyc_clr_bits(usbphyc->base + STM32_USBPHYC_PLL, PLLEN);
pllen, !(pllen & PLLEN), 5, 50)) {