[PATCH] ARM: DRA7: realtime_counter: Add ratio registers for 20MHZ sys-clk frequency\
Nishanth Menon
nm at ti.com
Wed Sep 18 08:56:26 EDT 2013
On 16:50-20130918, Sricharan R wrote:
> The real time counter also called master counter, is a free-running
> counter. It produces the count used by the CPU local timer peripherals
> in the MPU cluster. The timer counts at a rate of 6.144 MHz.
>
> The ratio registers are missing for a sys-clk of 20MHZ which is used
> by DRA7 socs. So because of this, the counter was getting wrongly
> programmed for a sys-clk of 38.4Mhz(default). So adding the ratio
> registers for 20MHZ sys-clk.
>
> Cc: Santosh Shilimkar <santosh.shilimkar at ti.com>
> Signed-off-by: Sricharan R <r.sricharan at ti.com>
Tested-by: Nishanth Menon <nm at ti.com>
platform: DRA7-evm
> ---
> arch/arm/mach-omap2/timer.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
> index e1528a0..fd9238d 100644
> --- a/arch/arm/mach-omap2/timer.c
> +++ b/arch/arm/mach-omap2/timer.c
> @@ -515,6 +515,10 @@ static void __init realtime_counter_init(void)
> num = 8;
> den = 25;
> break;
> + case 20000000:
> + num = 192;
> + den = 625;
> + break;
> case 2600000:
> num = 384;
> den = 1625;
> --
> 1.7.9.5
>
> --
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--
Regards,
Nishanth Menon
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