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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/clk/clk-bcm2835.c
2 * Copyright (C) 2010 Broadcom
3 * Copyright (C) 2012 Stephen Warren
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/clk-provider.h>
21 #include <linux/clkdev.h>
22 #include <linux/clk/bcm2835.h>
23 #include <linux/clk-provider.h>
26 static const __initconst
struct of_device_id clk_match
[] = {
27 { .compatible
= "fixed-clock", .data
= of_fixed_clk_setup
, },
32 * These are fixed clocks. They're probably not all root clocks and it may
33 * be possible to turn them on and off but until this is mapped out better
34 * it's the only way they can be used.
36 void __init
bcm2835_init_clocks(void)
41 clk
= clk_register_fixed_rate(NULL
, "sys_pclk", NULL
, CLK_IS_ROOT
,
44 pr_err("sys_pclk not registered\n");
46 clk
= clk_register_fixed_rate(NULL
, "apb_pclk", NULL
, CLK_IS_ROOT
,
49 pr_err("apb_pclk not registered\n");
51 clk
= clk_register_fixed_rate(NULL
, "uart0_pclk", NULL
, CLK_IS_ROOT
,
54 pr_err("uart0_pclk not registered\n");
55 ret
= clk_register_clkdev(clk
, NULL
, "20201000.uart");
57 pr_err("uart0_pclk alias not registered\n");
59 clk
= clk_register_fixed_rate(NULL
, "uart1_pclk", NULL
, CLK_IS_ROOT
,
62 pr_err("uart1_pclk not registered\n");
63 ret
= clk_register_clkdev(clk
, NULL
, "20215000.uart");
65 pr_err("uart1_pclk alias not registered\n");
67 of_clk_init(clk_match
);