PCIE_CLIENT_BASIC_STATUS1
u32 val = rockchip_pcie_read(rockchip, PCIE_CLIENT_BASIC_STATUS1);
ret = readl_poll_timeout(rockchip->apb_base + PCIE_CLIENT_BASIC_STATUS1,
err = readl_poll_timeout(rockchip->apb_base + PCIE_CLIENT_BASIC_STATUS1,