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@foss.st.com> for STMicroelectronics.
   5  */
   6
   7 #define LOG_CATEGORY UCLASS_NOP
   8
   9 #include <dm.h>
  10 #include <log.h>
  11 #include <misc.h>
  12 #include <stm32_rcc.h>
  13 #include <dm/device-internal.h>
  14 #include <dm/device_compat.h>
  15 #include <dm/lists.h>
  16
  17 struct stm32_rcc_clk stm32_rcc_clk_f42x = {
  18         .drv_name = "stm32fx_rcc_clock",
  19         .soc = STM32F42X,
  20 };
  21
  22 struct stm32_rcc_clk stm32_rcc_clk_f469 = {
  23         .drv_name = "stm32fx_rcc_clock",
  24         .soc = STM32F469,
  25 };
  26
  27 struct stm32_rcc_clk stm32_rcc_clk_f7 = {
  28         .drv_name = "stm32fx_rcc_clock",
  29         .soc = STM32F7,
  30 };
  31
  32 struct stm32_rcc_clk stm32_rcc_clk_h7 = {
  33         .drv_name = "stm32h7_rcc_clock",
  34 };
  35
  36 struct stm32_rcc_clk stm32_rcc_clk_mp1 = {
  37         .drv_name = "stm32mp1_clk",
  38         .soc = STM32MP1,
  39 };
  40
  41 struct stm32_rcc_clk stm32_rcc_clk_mp13 = {
  42         .drv_name = "stm32mp13_clk",
  43         .soc = STM32MP1,
  44 };
  45
  46 static int stm32_rcc_bind(struct udevice *dev)
  47 {
  48         struct udevice *child;
  49         struct driver *drv;
  50         struct stm32_rcc_clk *rcc_clk =
  51                 (struct stm32_rcc_clk *)dev_get_driver_data(dev);
  52         int ret;
  53
  54         dev_dbg(dev, "RCC bind\n");
  55         drv = lists_driver_lookup_name(rcc_clk->drv_name);
  56         if (!drv) {
  57                 dev_err(dev, "Cannot find driver '%s'\n", rcc_clk->drv_name);
  58                 return -ENOENT;
  59         }
  60
  61         ret = device_bind_with_driver_data(dev, drv, dev->name,
  62                                            rcc_clk->soc,
  63                                            dev_ofnode(dev), &child);
  64
  65         if (ret)
  66                 return ret;
  67
  68         drv = lists_driver_lookup_name("stm32_rcc_reset");
  69         if (!drv) {
  70                 dev_err(dev, "Cannot find driver stm32_rcc_reset'\n");
  71                 return -ENOENT;
  72         }
  73
  74         return device_bind_with_driver_data(dev, drv, dev->name,
  75                                             rcc_clk->soc,
  76                                             dev_ofnode(dev), &child);
  77 }
  78
  79 static const struct udevice_id stm32_rcc_ids[] = {
  80         {.compatible = "st,stm32f42xx-rcc", .data = (ulong)&stm32_rcc_clk_f42x },
  81         {.compatible = "st,stm32f469-rcc", .data = (ulong)&stm32_rcc_clk_f469 },
  82         {.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
  83         {.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
  84         {.compatible = "st,stm32mp1-rcc", .data = (ulong)&stm32_rcc_clk_mp1 },
  85         {.compatible = "st,stm32mp1-rcc-secure", .data = (ulong)&stm32_rcc_clk_mp1 },
  86         {.compatible = "st,stm32mp13-rcc", .data = (ulong)&stm32_rcc_clk_mp13 },
  87         { }
  88 };
  89
  90 U_BOOT_DRIVER(stm32_rcc) = {
  91         .name           = "stm32-rcc",
  92         .id             = UCLASS_NOP,
  93         .of_match       = stm32_rcc_ids,
  94         .bind           = stm32_rcc_bind,
  95 };