RP_LINK_CONTROL_STATUS
value = readl(port->base + RP_LINK_CONTROL_STATUS);
value = readl(port->base + RP_LINK_CONTROL_STATUS);
value = readl(port->base + RP_LINK_CONTROL_STATUS);
writel(value, port->base + RP_LINK_CONTROL_STATUS);
value = readl(port->base + RP_LINK_CONTROL_STATUS);
value = readl(port->base + RP_LINK_CONTROL_STATUS);