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_f42x = {
  15         .drv_name = "stm32fx_rcc_clock",
  16         .soc = STM32F42X,
  17 };
  18
  19 struct stm32_rcc_clk stm32_rcc_clk_f469 = {
  20         .drv_name = "stm32fx_rcc_clock",
  21         .soc = STM32F469,
  22 };
  23
  24 struct stm32_rcc_clk stm32_rcc_clk_f7 = {
  25         .drv_name = "stm32fx_rcc_clock",
  26         .soc = STM32F7,
  27 };
  28
  29 struct stm32_rcc_clk stm32_rcc_clk_h7 = {
  30         .drv_name = "stm32h7_rcc_clock",
  31 };
  32
  33 struct stm32_rcc_clk stm32_rcc_clk_mp1 = {
  34         .drv_name = "stm32mp1_clk",
  35         .soc = STM32MP1,
  36 };
  37
  38 static int stm32_rcc_bind(struct udevice *dev)
  39 {
  40         struct udevice *child;
  41         struct driver *drv;
  42         struct stm32_rcc_clk *rcc_clk =
  43                 (struct stm32_rcc_clk *)dev_get_driver_data(dev);
  44         int ret;
  45
  46         debug("%s(dev=%p)\n", __func__, dev);
  47         drv = lists_driver_lookup_name(rcc_clk->drv_name);
  48         if (!drv) {
  49                 debug("Cannot find driver '%s'\n", rcc_clk->drv_name);
  50                 return -ENOENT;
  51         }
  52
  53         ret = device_bind_with_driver_data(dev, drv, rcc_clk->drv_name,
  54                                            rcc_clk->soc,
  55                                            dev_ofnode(dev), &child);
  56
  57         if (ret)
  58                 return ret;
  59
  60         drv = lists_driver_lookup_name("stm32_rcc_reset");
  61         if (!drv) {
  62                 dev_err(dev, "Cannot find driver stm32_rcc_reset'\n");
  63                 return -ENOENT;
  64         }
  65
  66         return device_bind_with_driver_data(dev, drv, "stm32_rcc_reset",
  67                                             rcc_clk->soc,
  68                                             dev_ofnode(dev), &child);
  69 }
  70
  71
  72 static const struct udevice_id stm32_rcc_ids[] = {
  73         {.compatible = "st,stm32f42xx-rcc", .data = (ulong)&stm32_rcc_clk_f42x },
  74         {.compatible = "st,stm32f469-rcc", .data = (ulong)&stm32_rcc_clk_f469 },
  75         {.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
  76         {.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
  77         {.compatible = "st,stm32mp1-rcc", .data = (ulong)&stm32_rcc_clk_mp1 },
  78         { }
  79 };
  80
  81 U_BOOT_DRIVER(stm32_rcc) = {
  82         .name           = "stm32-rcc",
  83         .id             = UCLASS_NOP,
  84         .of_match       = stm32_rcc_ids,
  85         .bind           = stm32_rcc_bind,
  86 };