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/device_compat.h>
  13 #include <dm/lists.h>
  14
  15 struct stm32_rcc_clk stm32_rcc_clk_f42x = {
  16         .drv_name = "stm32fx_rcc_clock",
  17         .soc = STM32F42X,
  18 };
  19
  20 struct stm32_rcc_clk stm32_rcc_clk_f469 = {
  21         .drv_name = "stm32fx_rcc_clock",
  22         .soc = STM32F469,
  23 };
  24
  25 struct stm32_rcc_clk stm32_rcc_clk_f7 = {
  26         .drv_name = "stm32fx_rcc_clock",
  27         .soc = STM32F7,
  28 };
  29
  30 struct stm32_rcc_clk stm32_rcc_clk_h7 = {
  31         .drv_name = "stm32h7_rcc_clock",
  32 };
  33
  34 struct stm32_rcc_clk stm32_rcc_clk_mp1 = {
  35         .drv_name = "stm32mp1_clk",
  36         .soc = STM32MP1,
  37 };
  38
  39 static int stm32_rcc_bind(struct udevice *dev)
  40 {
  41         struct udevice *child;
  42         struct driver *drv;
  43         struct stm32_rcc_clk *rcc_clk =
  44                 (struct stm32_rcc_clk *)dev_get_driver_data(dev);
  45         int ret;
  46
  47         debug("%s(dev=%p)\n", __func__, dev);
  48         drv = lists_driver_lookup_name(rcc_clk->drv_name);
  49         if (!drv) {
  50                 debug("Cannot find driver '%s'\n", rcc_clk->drv_name);
  51                 return -ENOENT;
  52         }
  53
  54         ret = device_bind_with_driver_data(dev, drv, rcc_clk->drv_name,
  55                                            rcc_clk->soc,
  56                                            dev_ofnode(dev), &child);
  57
  58         if (ret)
  59                 return ret;
  60
  61         drv = lists_driver_lookup_name("stm32_rcc_reset");
  62         if (!drv) {
  63                 dev_err(dev, "Cannot find driver stm32_rcc_reset'\n");
  64                 return -ENOENT;
  65         }
  66
  67         return device_bind_with_driver_data(dev, drv, "stm32_rcc_reset",
  68                                             rcc_clk->soc,
  69                                             dev_ofnode(dev), &child);
  70 }
  71
  72
  73 static const struct udevice_id stm32_rcc_ids[] = {
  74         {.compatible = "st,stm32f42xx-rcc", .data = (ulong)&stm32_rcc_clk_f42x },
  75         {.compatible = "st,stm32f469-rcc", .data = (ulong)&stm32_rcc_clk_f469 },
  76         {.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
  77         {.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
  78         {.compatible = "st,stm32mp1-rcc", .data = (ulong)&stm32_rcc_clk_mp1 },
  79         { }
  80 };
  81
  82 U_BOOT_DRIVER(stm32_rcc) = {
  83         .name           = "stm32-rcc",
  84         .id             = UCLASS_NOP,
  85         .of_match       = stm32_rcc_ids,
  86         .bind           = stm32_rcc_bind,
  87 };