X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fconfigs%2FPK1C20.h;h=874c20b935c36c206494478bea52966dcc18ecc9;hb=178e26d75212f5aba63116585ef8f67ca6854e85;hp=165dde043e6429d03af07a8a9384f89e9dd2b54f;hpb=c9d4f46b5d639a45747d5eaabd31d35856cb918f;p=u-boot diff --git a/include/configs/PK1C20.h b/include/configs/PK1C20.h index 165dde043e..874c20b935 100644 --- a/include/configs/PK1C20.h +++ b/include/configs/PK1C20.h @@ -124,14 +124,16 @@ * TIMEBASE -- * * The high res timer defaults to 1 msec. Since it includes the period - * registers, we can slow it down to 10 msec using TMRCNT. If the default - * period is acceptable, TMRCNT can be left undefined. + * registers, the interrupt frequency can be reduced using TMRCNT. + * If the default period is acceptable, TMRCNT can be left undefined. + * TMRMS represents the desired mecs per tick (msecs per interrupt). *----------------------------------------------------------------------*/ +#define CONFIG_SYS_HZ 1000 /* Always 1000 */ #define CONFIG_SYS_NIOS_TMRBASE 0x02120820 /* Tick timer base addr */ -#define CONFIG_SYS_NIOS_TMRIRQ 3 /* Timer IRQ num */ -#define CONFIG_SYS_NIOS_TMRMS 10 /* 10 msec per tick */ -#define CONFIG_SYS_NIOS_TMRCNT (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000)) -#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1)) +#define CONFIG_SYS_NIOS_TMRIRQ 3 /* Timer IRQ num */ +#define CONFIG_SYS_NIOS_TMRMS 10 /* Desired period */ +#define CONFIG_SYS_NIOS_TMRCNT \ + (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000)) /*------------------------------------------------------------------------ * STATUS LED -- Provides a simple blinking led. For Nios2 each board