[PATCH v4 3/9] PCI: imx6: Fetch dbi2 and iATU base addesses from DT

[Richard Zhu]

Since dbi2 and atu regs are added for i.MX8M PCIes. Fetch the dbi2 and iATU
base addresses from DT directly, and remove the useless codes.

Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
---
 drivers/pci/controller/dwc/pci-imx6.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 52a8b2dc828a..2ae6fa4b5d32 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1113,7 +1113,6 @@ static int imx_add_pcie_ep(struct imx_pcie *imx_pcie,
 			   struct platform_device *pdev)
 {
 	int ret;
-	unsigned int pcie_dbi2_offset;
 	struct dw_pcie_ep *ep;
 	struct dw_pcie *pci = imx_pcie->pci;
 	struct dw_pcie_rp *pp = &pci->pp;
@@ -1123,25 +1122,6 @@ static int imx_add_pcie_ep(struct imx_pcie *imx_pcie,
 	ep = &pci->ep;
 	ep->ops = &pcie_ep_ops;
 
-	switch (imx_pcie->drvdata->variant) {
-	case IMX8MQ_EP:
-	case IMX8MM_EP:
-	case IMX8MP_EP:
-		pcie_dbi2_offset = SZ_1M;
-		break;
-	default:
-		pcie_dbi2_offset = SZ_4K;
-		break;
-	}
-
-	pci->dbi_base2 = pci->dbi_base + pcie_dbi2_offset;
-
-	/*
-	 * FIXME: Ideally, dbi2 base address should come from DT. But since only IMX95 is defining
-	 * "dbi2" in DT, "dbi_base2" is set to NULL here for that platform alone so that the DWC
-	 * core code can fetch that from DT. But once all platform DTs were fixed, this and the
-	 * above "dbi_base2" setting should be removed.
-	 */
 	if (device_property_match_string(dev, "reg-names", "dbi2") >= 0)
 		pci->dbi_base2 = NULL;
 
-- 
2.37.1