diff options
Diffstat (limited to 'chip/mchp/config_chip.h')
| -rw-r--r-- | chip/mchp/config_chip.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/chip/mchp/config_chip.h b/chip/mchp/config_chip.h index 71b765894a..cf7ead512a 100644 --- a/chip/mchp/config_chip.h +++ b/chip/mchp/config_chip.h @@ -150,6 +150,18 @@ #define CONFIG_PROGRAM_MEMORY_BASE 0x000E0000 #endif +/* + * Optimize SPI flash read timing, MEC172x QMSPI controller controls CS# + * by hardware, it will add several system clock cycles delay between CS + * deassertion to CS assertion at the start of the next transaction, this + * guarantees SPI back to back transactions, so 1ms delay can be removed + * to optimze timing. MEC172x chip supports this hardware feature. + */ +#if defined(CHIP_FAMILY_MEC172X) +#undef CONFIG_SPI_FLASH_READ_WAIT_MS +#define CONFIG_SPI_FLASH_READ_WAIT_MS 0 +#endif + #include "config_flash_layout.h" /************************************************************************/ |