drivers/misc/stm32_rcc.c

   1 /*
   2  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
   3  * Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <misc.h>
  11 #include <stm32_rcc.h>
  12 #include <dm/device-internal.h>
  13 #include <dm/lists.h>
  14
  15 struct stm32_rcc_clk stm32_rcc_clk_f4 = {
  16         .drv_name = "stm32fx_rcc_clock",
  17         .soc = STM32F4,
  18 };
  19
  20 struct stm32_rcc_clk stm32_rcc_clk_f7 = {
  21         .drv_name = "stm32fx_rcc_clock",
  22         .soc = STM32F7,
  23 };
  24
  25 struct stm32_rcc_clk stm32_rcc_clk_h7 = {
  26         .drv_name = "stm32h7_rcc_clock",
  27 };
  28
  29 static int stm32_rcc_bind(struct udevice *dev)
  30 {
  31         struct udevice *child;
  32         struct driver *drv;
  33         struct stm32_rcc_clk *rcc_clk =
  34                 (struct stm32_rcc_clk *)dev_get_driver_data(dev);
  35         int ret;
  36
  37         debug("%s(dev=%p)\n", __func__, dev);
  38
  39         drv = lists_driver_lookup_name(rcc_clk->drv_name);
  40         if (!drv) {
  41                 debug("Cannot find driver '%s'\n", rcc_clk->drv_name);
  42                 return -ENOENT;
  43         }
  44
  45         ret = device_bind_with_driver_data(dev, drv, rcc_clk->drv_name,
  46                                            rcc_clk->soc,
  47                                            dev_ofnode(dev), &child);
  48
  49         if (ret)
  50                 return ret;
  51
  52 #ifdef CONFIG_SPL_BUILD
  53         return 0;
  54 #else
  55         return device_bind_driver_to_node(dev, "stm32_rcc_reset",
  56                                           "stm32_rcc_reset",
  57                                           dev_ofnode(dev), &child);
  58 #endif
  59 }
  60
  61 static const struct misc_ops stm32_rcc_ops = {
  62 };
  63
  64 static const struct udevice_id stm32_rcc_ids[] = {
  65         {.compatible = "st,stm32f42xx-rcc", .data = (ulong)&stm32_rcc_clk_f4 },
  66         {.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
  67         {.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
  68         { }
  69 };
  70
  71 U_BOOT_DRIVER(stm32_rcc) = {
  72         .name           = "stm32-rcc",
  73         .id             = UCLASS_MISC,
  74         .of_match       = stm32_rcc_ids,
  75         .bind           = stm32_rcc_bind,
  76         .ops            = &stm32_rcc_ops,
  77 };