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| author | Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2013-07-23 13:57:24 +0900 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2013-10-17 09:34:38 +0900 |
| commit | 861bd4bcf7e7eba165b42e79cea005486851d69b (patch) | |
| tree | eee87c16112d4872b501f285047dd3fc93f65a93 /arch/sh/lib | |
| parent | 183acb700378a8cfc5d50a01a65de93fb2c24586 (diff) | |
| download | u-boot-861bd4bcf7e7eba165b42e79cea005486851d69b.tar.gz u-boot-861bd4bcf7e7eba165b42e79cea005486851d69b.tar.bz2 u-boot-861bd4bcf7e7eba165b42e79cea005486851d69b.zip | |
sh: timer: Mask bit of timer prescaler
timer_init function sets timer prescaler bit.
The previous code so did not mask this bit, this function was to overwrite
the bit. This will fix this problem.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'arch/sh/lib')
| -rw-r--r-- | arch/sh/lib/time.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sh/lib/time.c b/arch/sh/lib/time.c index 1fe537e83b..8f83d46792 100644 --- a/arch/sh/lib/time.c +++ b/arch/sh/lib/time.c @@ -17,6 +17,8 @@ #include <asm/io.h> #include <sh_tmu.h> +#define TCR_TPSC 0x07 + static struct tmu_regs *tmu = (struct tmu_regs *)TMU_BASE; static u16 bit; @@ -61,7 +63,7 @@ static void tmu_timer_stop(unsigned int timer) int timer_init(void) { bit = (ffs(CONFIG_SYS_TMU_CLK_DIV) >> 1) - 1; - writew(readw(&tmu->tcr0) | bit, &tmu->tcr0); + writew((readw(&tmu->tcr0) & ~TCR_TPSC) | bit, &tmu->tcr0); tmu_timer_stop(0); tmu_timer_start(0); |