phy: rockchip-inno-combphy: support low power consumption mode
Support low power consumption mode when PCIe suspend.
1. Add missing Kconfig and Makefile
2. Add usb3phy_grf_p reset
3. Turn off PCIe phy pd
4. Write some more MAGIC registers to enter low power mode like following:
/* enter PCIe phy low power mode */
writel(0x36, priv->mmio + 0x2150);
writel(0x36, priv->mmio + 0x3150);
writel(0x02, priv->mmio + 0x21e8);
writel(0x02, priv->mmio + 0x31e8);
writel(0x0c, priv->mmio + 0x2080);
writel(0x0c, priv->mmio + 0x3080);
writel(0x08, priv->mmio + 0x20c0);
writel(0x08, priv->mmio + 0x30c0);
writel(0x08, priv->mmio + 0x2058);
writel(0x10, priv->mmio + 0x2044);
writel(0x10, priv->mmio + 0x21a8);
writel(0x10, priv->mmio + 0x31a8);
writel(0x08, priv->mmio + 0x2058);
writel(0x08, priv->mmio + 0x3058);
writel(0x40, priv->mmio + 0x205c);
writel(0x40, priv->mmio + 0x305c);
writel(0x08, priv->mmio + 0x2184);
writel(0x08, priv->mmio + 0x3184);
writel(0x00, priv->mmio + 0x2150);
writel(0x00, priv->mmio + 0x3150);
writel(0x10, priv->mmio + 0x20e0);
writel(0x00, priv->mmio + 0x21e8);
writel(0x00, priv->mmio + 0x31e8);
Change-Id: I2dc7f99e54d336f45a13b2842bde1a02300311fc
Signed-off-by: Simon Xue <xxm@rock-chips.com>
f6a80248e3