xref: /OK3568_Linux_fs/kernel/arch/sh/include/asm/timex.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * linux/include/asm-sh/timex.h
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * sh architecture timex specifications
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun #ifndef __ASM_SH_TIMEX_H
8*4882a593Smuzhiyun #define __ASM_SH_TIMEX_H
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun /*
11*4882a593Smuzhiyun  * Only parts using the legacy CPG code for their clock framework
12*4882a593Smuzhiyun  * implementation need to define their own Pclk value. If provided, this
13*4882a593Smuzhiyun  * can be used for accurately setting CLOCK_TICK_RATE, otherwise we
14*4882a593Smuzhiyun  * simply fall back on the i8253 PIT value.
15*4882a593Smuzhiyun  */
16*4882a593Smuzhiyun #ifdef CONFIG_SH_PCLK_FREQ
17*4882a593Smuzhiyun #define CLOCK_TICK_RATE		(CONFIG_SH_PCLK_FREQ / 4) /* Underlying HZ */
18*4882a593Smuzhiyun #else
19*4882a593Smuzhiyun #define CLOCK_TICK_RATE		1193180
20*4882a593Smuzhiyun #endif
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun #include <asm-generic/timex.h>
23*4882a593Smuzhiyun 
24*4882a593Smuzhiyun #endif /* __ASM_SH_TIMEX_H */
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