Commits
Li Jun committed 5840b174e85
MLK-16576 usb: phy: mxs: set hold_ring_off for USB2 PLL power up USB2 PLL use ring VCO, when the PLL power up, the ring VCO’s supply also ramp up. There is a possibility that the ring VCO start oscillation at multi nodes in this phase, especially for VCO which has many stages, then the multiwave will kept until PLL power down. Hold_ring_off(bit11) can force the VCO in one determined state when VCO supply start ramp up, to avoid this multiwave issue. Per IC design's suggestion it's better this bit can be off from 25us after pll power up to 25us before USB TX/RX. Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Li Jun <jun.li@nxp.com> (cherry picked from commit a094377f04c9ed2c8e702ee7bfab843caa03eb96)