diff options
| author | Boschung, Rainer <Rainer.Boschung@keymile.com> | 2014-06-03 09:05:13 +0200 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-08-01 14:18:07 -0700 |
| commit | 60b295672d61fe79e6af3d9e4f3e8bd23bf3b4ad (patch) | |
| tree | 3ec0fd58ef11a66a91fc9006999eab7333150904 | |
| parent | 3345d18d5baad05807ecac36bc4125dbc74d288f (diff) | |
powerpc: macros for e500mc timer regs added
For e500mc cores the watchdog timer period has to be set by means of a
6bit value, that defines the bit of the timebase counter used to signal
a watchdog timer exception on its 0 to 1 transition.
The macro used to set the watchdog period TCR_WP, was redefined for e500mc
to support 6 WP setting.
The parameter (x) given to the macro specifies the prescaling factor of
the time base clock (fTB):
watchdog_period = 1/fTB * 2^x
Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 2445acd69d..1b98e0f8a9 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -378,11 +378,16 @@ #else #define SPRN_TCR 0x154 /* Book E Timer Control Register */ #endif /* CONFIG_BOOKE */ +#ifdef CONFIG_E500MC +#define TCR_WP(x) (((64-x)&0x3)<<30)| \ + (((64-x)&0x3c)<<15) /* WDT Period 2^x clocks*/ +#else #define TCR_WP(x) (((x)&0x3)<<30) /* WDT Period */ #define WP_2_17 0 /* 2^17 clocks */ #define WP_2_21 1 /* 2^21 clocks */ #define WP_2_25 2 /* 2^25 clocks */ #define WP_2_29 3 /* 2^29 clocks */ +#endif /* CONFIG_E500 */ #define TCR_WRC(x) (((x)&0x3)<<28) /* WDT Reset Control */ #define WRC_NONE 0 /* No reset will occur */ #define WRC_CORE 1 /* Core reset will occur */ |