git.sur5r.net Git - u-boot/blob - drivers/misc/stm32_rcc.c

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