phy: rockchip: naneng-combphy: Fix PCIe L1ss support RK3528

phy: rockchip: naneng-combphy: Fix PCIe L1ss support RK3528

When PCIe link enters L1 PM substates, the PHY will turn off its
PLL for power-saving. However, it turns off the PLL too fast which
leads the PHY to be broken. According to the PHY document, we need
to delay PLL turnoff time.

Fixes: bbcca4fac873 ("phy: rockchip: naneng-combphy: Add RK3528 support")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/1763459526-35004-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>