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| author | Fadil Berisha <f.koliqi@gmail.com> | 2013-02-27 17:00:07 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2013-03-07 17:22:58 +0100 |
| commit | 6ecd05d2f5bec0a1a70367b1750f52dc2f1f4382 (patch) | |
| tree | d8557d775cdd53d89dabccafd62f09c2712c7d8f /arch/arm/cpu | |
| parent | 36c7c9250d7c4717808a637da74e59a29a235848 (diff) | |
| download | u-boot-imx-6ecd05d2f5bec0a1a70367b1750f52dc2f1f4382.zip u-boot-imx-6ecd05d2f5bec0a1a70367b1750f52dc2f1f4382.tar.gz u-boot-imx-6ecd05d2f5bec0a1a70367b1750f52dc2f1f4382.tar.bz2 | |
mxs: timrot: Add support to i.MX23
This patch add timer support to i.MX23 and complete bit fields and values
on regs-timrot.h.
Testet on imx23-olinuxino board.
Signed-off-by: Fadil Berisha <f.koliqi@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mxs/timer.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/timer.c b/arch/arm/cpu/arm926ejs/mxs/timer.c index 3738411..2a95bcb 100644 --- a/arch/arm/cpu/arm926ejs/mxs/timer.c +++ b/arch/arm/cpu/arm926ejs/mxs/timer.c @@ -32,7 +32,11 @@ #include <asm/arch/sys_proto.h> /* Maximum fixed count */ -#define TIMER_LOAD_VAL 0xffffffff +#if defined(CONFIG_MX23) +#define TIMER_LOAD_VAL 0xffff +#elif defined(CONFIG_MX28) +#define TIMER_LOAD_VAL 0xffffffff +#endif DECLARE_GLOBAL_DATA_PTR; @@ -69,7 +73,11 @@ int timer_init(void) mxs_reset_block(&timrot_regs->hw_timrot_rotctrl_reg); /* Set fixed_count to 0 */ +#if defined(CONFIG_MX23) + writel(0, &timrot_regs->hw_timrot_timcount0); +#elif defined(CONFIG_MX28) writel(0, &timrot_regs->hw_timrot_fixed_count0); +#endif /* Set UPDATE bit and 1Khz frequency */ writel(TIMROT_TIMCTRLn_UPDATE | TIMROT_TIMCTRLn_RELOAD | @@ -77,7 +85,11 @@ int timer_init(void) &timrot_regs->hw_timrot_timctrl0); /* Set fixed_count to maximal value */ +#if defined(CONFIG_MX23) + writel(TIMER_LOAD_VAL - 1, &timrot_regs->hw_timrot_timcount0); +#elif defined(CONFIG_MX28) writel(TIMER_LOAD_VAL, &timrot_regs->hw_timrot_fixed_count0); +#endif return 0; } @@ -86,9 +98,16 @@ unsigned long long get_ticks(void) { struct mxs_timrot_regs *timrot_regs = (struct mxs_timrot_regs *)MXS_TIMROT_BASE; + uint32_t now; /* Current tick value */ - uint32_t now = readl(&timrot_regs->hw_timrot_running_count0); +#if defined(CONFIG_MX23) + /* Upper bits are the valid ones. */ + now = readl(&timrot_regs->hw_timrot_timcount0) >> + TIMROT_RUNNING_COUNTn_RUNNING_COUNT_OFFSET; +#elif defined(CONFIG_MX28) + now = readl(&timrot_regs->hw_timrot_running_count0); +#endif if (lastdec >= now) { /* |