diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h')
| -rw-r--r-- | nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h b/nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h index 80c5386af..1780c0392 100644 --- a/nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h +++ b/nuttx/arch/arm/src/lpc17xx/chip/lpc178x_syscon.h @@ -277,7 +277,12 @@ /* 0: EMC uses same clock as CPU */ /* 1: EMC uses half the rate of CPU */ /* Bits 1-31: Reserved */ -/* CPU Clock Selection register */ +/* EMC Clock Selection Register */ + +#define SYSCON_EMCCLKSEL_CCLK_DIV2 (1 << 0) /* Bit 0: 1=EMC used CPU clock / 2 */ +#define SYSCON_EMCCLKSEL_CCLK_DIV1 (0) /* 0=EMC used CPU clock */ + +/* CPU Clock Selection Register */ #define SYSCON_CCLKSEL_CCLKDIV_SHIFT (0) /* 0-4: Divide value for CPU clock (CCLK) */ #define SYSCON_CCLKSEL_CCLKDIV_MASK (0x1f << SYSCON_CCLKSEL_CCLKDIV_SHIFT) |