drivers/serial/serial_tegra.c

   1 /*
   2  * Copyright (c) 2014 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <ns16550.h>
  10 #include <serial.h>
  11
  12 #ifdef CONFIG_OF_CONTROL
  13 static const struct udevice_id tegra_serial_ids[] = {
  14         { .compatible = "nvidia,tegra20-uart" },
  15         { }
  16 };
  17
  18 static int tegra_serial_ofdata_to_platdata(struct udevice *dev)
  19 {
  20         struct ns16550_platdata *plat = dev_get_platdata(dev);
  21         int ret;
  22
  23         ret = ns16550_serial_ofdata_to_platdata(dev);
  24         if (ret)
  25                 return ret;
  26         plat->clock = V_NS16550_CLK;
  27
  28         return 0;
  29 }
  30 #else
  31 struct ns16550_platdata tegra_serial = {
  32         .base = CONFIG_SYS_NS16550_COM1,
  33         .reg_shift = 2,
  34         .clock = V_NS16550_CLK,
  35 };
  36
  37 U_BOOT_DEVICE(ns16550_serial) = {
  38         "serial_tegra20", &tegra_serial
  39 };
  40 #endif
  41
  42 U_BOOT_DRIVER(serial_ns16550) = {
  43         .name   = "serial_tegra20",
  44         .id     = UCLASS_SERIAL,
  45 #ifdef CONFIG_OF_CONTROL
  46         .of_match = tegra_serial_ids,
  47         .ofdata_to_platdata = tegra_serial_ofdata_to_platdata,
  48         .platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
  49 #endif
  50         .priv_auto_alloc_size = sizeof(struct NS16550),
  51         .probe = ns16550_serial_probe,
  52         .ops    = &ns16550_serial_ops,
  53         .flags  = DM_FLAG_PRE_RELOC,
  54 };