xref: /OK3568_Linux_fs/u-boot/drivers/clk/at91/clk-slow.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * Copyright (C) 2016 Atmel Corporation
3*4882a593Smuzhiyun  *               Wenyou.Yang <wenyou.yang@atmel.com>
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <clk-uclass.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun 
at91_slow_clk_enable(struct clk * clk)12*4882a593Smuzhiyun static int at91_slow_clk_enable(struct clk *clk)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun 	return 0;
15*4882a593Smuzhiyun }
16*4882a593Smuzhiyun 
at91_slow_clk_get_rate(struct clk * clk)17*4882a593Smuzhiyun static ulong at91_slow_clk_get_rate(struct clk *clk)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun 	return CONFIG_SYS_AT91_SLOW_CLOCK;
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun static struct clk_ops at91_slow_clk_ops = {
23*4882a593Smuzhiyun 	.enable = at91_slow_clk_enable,
24*4882a593Smuzhiyun 	.get_rate = at91_slow_clk_get_rate,
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun static const struct udevice_id at91_slow_clk_match[] = {
28*4882a593Smuzhiyun 	{ .compatible = "atmel,at91sam9x5-clk-slow" },
29*4882a593Smuzhiyun 	{}
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun 
32*4882a593Smuzhiyun U_BOOT_DRIVER(at91_slow_clk) = {
33*4882a593Smuzhiyun 	.name = "at91-slow-clk",
34*4882a593Smuzhiyun 	.id = UCLASS_CLK,
35*4882a593Smuzhiyun 	.of_match = at91_slow_clk_match,
36*4882a593Smuzhiyun 	.ops = &at91_slow_clk_ops,
37*4882a593Smuzhiyun };
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