pci: xilinx: Fix "reg" not found error

Fix the driver to use the dev_read_addr_size API to fetch the reg
property from the DT.

Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
Link: https://lore.kernel.org/r/20231116165103.140968-2-mchitale@ventanamicro.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

diff --git a/drivers/pci/pcie_xilinx.c b/drivers/pci/pcie_xilinx.c
index 53fd121e905cd8a8436768d13b71006ca5f04285..fdc9b08c10b1f74e545e123f6c09ab3617ef86d4 100644 (file)
--- a/drivers/pci/pcie_xilinx.c
+++ b/drivers/pci/pcie_xilinx.c
@@ -8,11 +8,10 @@
 #include <common.h>
 #include <dm.h>
 #include <pci.h>
-#include <asm/global_data.h>
 #include <linux/bitops.h>
 #include <linux/printk.h>
-
-#include <asm/io.h>
+#include <linux/io.h>
+#include <linux/err.h>
 
 /**
  * struct xilinx_pcie - Xilinx PCIe controller state
@@ -140,20 +139,16 @@ static int pcie_xilinx_write_config(struct udevice *bus, pci_dev_t bdf,
 static int pcie_xilinx_of_to_plat(struct udevice *dev)
 {
        struct xilinx_pcie *pcie = dev_get_priv(dev);
-       struct fdt_resource reg_res;
-       DECLARE_GLOBAL_DATA_PTR;
-       int err;
-
-       err = fdt_get_resource(gd->fdt_blob, dev_of_offset(dev), "reg",
-                              0, &reg_res);
-       if (err < 0) {
-               pr_err("\"reg\" resource not found\n");
-               return err;
-       }
-
-       pcie->cfg_base = map_physmem(reg_res.start,
-                                    fdt_resource_size(&reg_res),
-                                    MAP_NOCACHE);
+       fdt_addr_t addr;
+       fdt_size_t size;
+
+       addr = dev_read_addr_size(dev, &size);
+       if (addr == FDT_ADDR_T_NONE)
+               return -EINVAL;
+
+       pcie->cfg_base = devm_ioremap(dev, addr, size);
+       if (IS_ERR(pcie->cfg_base))
+               return PTR_ERR(pcie->cfg_base);
 
        return 0;
 }