git.sur5r.net Git - u-boot/blob - drivers/clk/at91/clk-slow.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016 Atmel Corporation
   4  *               Wenyou.Yang <wenyou.yang@atmel.com>
   5  */
   6
   7 #include <common.h>
   8 #include <clk-uclass.h>
   9 #include <dm.h>
  10
  11 static int at91_slow_clk_enable(struct clk *clk)
  12 {
  13         return 0;
  14 }
  15
  16 static ulong at91_slow_clk_get_rate(struct clk *clk)
  17 {
  18         return CONFIG_SYS_AT91_SLOW_CLOCK;
  19 }
  20
  21 static struct clk_ops at91_slow_clk_ops = {
  22         .enable = at91_slow_clk_enable,
  23         .get_rate = at91_slow_clk_get_rate,
  24 };
  25
  26 static const struct udevice_id at91_slow_clk_match[] = {
  27         { .compatible = "atmel,at91sam9x5-clk-slow" },
  28         {}
  29 };
  30
  31 U_BOOT_DRIVER(at91_slow_clk) = {
  32         .name = "at91-slow-clk",
  33         .id = UCLASS_CLK,
  34         .of_match = at91_slow_clk_match,
  35         .ops = &at91_slow_clk_ops,
  36 };