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