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