drivers/mtd/nand/denali_dt.c

   1 /*
   2  * Copyright (C) 2017 Socionext Inc.
   3  *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <linux/io.h>
  11 #include <linux/ioport.h>
  12
  13 #include "denali.h"
  14
  15 static const struct udevice_id denali_nand_dt_ids[] = {
  16         {
  17                 .compatible = "altr,socfpga-denali-nand",
  18         },
  19         {
  20                 .compatible = "socionext,uniphier-denali-nand-v5a",
  21         },
  22         {
  23                 .compatible = "socionext,uniphier-denali-nand-v5b",
  24         },
  25         { /* sentinel */ }
  26 };
  27
  28 static int denali_dt_probe(struct udevice *dev)
  29 {
  30         struct denali_nand_info *denali = dev_get_priv(dev);
  31         struct resource res;
  32         int ret;
  33
  34         ret = dev_read_resource_byname(dev, "denali_reg", &res);
  35         if (ret)
  36                 return ret;
  37
  38         denali->flash_reg = devm_ioremap(dev, res.start, resource_size(&res));
  39
  40         ret = dev_read_resource_byname(dev, "nand_data", &res);
  41         if (ret)
  42                 return ret;
  43
  44         denali->flash_mem = devm_ioremap(dev, res.start, resource_size(&res));
  45
  46         return denali_init(denali);
  47 }
  48
  49 U_BOOT_DRIVER(denali_nand_dt) = {
  50         .name = "denali-nand-dt",
  51         .id = UCLASS_MISC,
  52         .of_match = denali_nand_dt_ids,
  53         .probe = denali_dt_probe,
  54         .priv_auto_alloc_size = sizeof(struct denali_nand_info),
  55 };
  56
  57 void board_nand_init(void)
  58 {
  59         struct udevice *dev;
  60         int ret;
  61
  62         ret = uclass_get_device_by_driver(UCLASS_MISC,
  63                                           DM_GET_DRIVER(denali_nand_dt),
  64                                           &dev);
  65         if (ret && ret != -ENODEV)
  66                 printf("Failed to initialize Denali NAND controller. (error %d)\n",
  67                        ret);
  68 }