drivers/clk/hisilicon/clk-hip04.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Hisilicon HiP04 clock driver
   4  *
   5  * Copyright (c) 2013-2014 Hisilicon Limited.
   6  * Copyright (c) 2013-2014 Linaro Limited.
   7  *
   8  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/clk-provider.h>
  13 #include <linux/io.h>
  14 #include <linux/of.h>
  15 #include <linux/of_address.h>
  16 #include <linux/of_device.h>
  17 #include <linux/slab.h>
  18
  19 #include <dt-bindings/clock/hip04-clock.h>
  20
  21 #include "clk.h"
  22
  23 /* fixed rate clocks */
  24 static struct hisi_fixed_rate_clock hip04_fixed_rate_clks[] __initdata = {
  25         { HIP04_OSC50M,   "osc50m",   NULL, 0, 50000000, },
  26         { HIP04_CLK_50M,  "clk50m",   NULL, 0, 50000000, },
  27         { HIP04_CLK_168M, "clk168m",  NULL, 0, 168750000, },
  28 };
  29
  30 static void __init hip04_clk_init(struct device_node *np)
  31 {
  32         struct hisi_clock_data *clk_data;
  33
  34         clk_data = hisi_clk_init(np, HIP04_NR_CLKS);
  35         if (!clk_data)
  36                 return;
  37
  38         hisi_clk_register_fixed_rate(hip04_fixed_rate_clks,
  39                                      ARRAY_SIZE(hip04_fixed_rate_clks),
  40                                      clk_data);
  41 }
  42 CLK_OF_DECLARE(hip04_clk, "hisilicon,hip04-clock", hip04_clk_init);