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bugfix(flash): improve spi cs timing settings for flash

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cs setup time is recomemded to be 1.5T, and cs hold time is recommended to be 2.5T.
(cs_setup = 1, cs_setup_time = 0; cs_hold = 1, cs_hold_time = 1)
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chenjianqiang
2019-05-09 15:26:24 +08:00
parent 6d8990f39b
commit 232408981d
4 changed files with 25 additions and 0 deletions
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8
components/bootloader_support/include/bootloader_common.h
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@@ -141,3 +141,11 @@ esp_err_t bootloader_common_get_partition_description(const esp_partition_pos_t
* @brief Configure VDDSDIO, call this API to rise VDDSDIO to 1.9V when VDDSDIO regulator is enabled as 1.8V mode.
*/
void bootloader_common_vddsdio_configure();
/**
* @brief Set the flash CS setup and hold time.
*
* CS setup time is recomemded to be 1.5T, and CS hold time is recommended to be 2.5T.
* cs_setup = 1, cs_setup_time = 0; cs_hold = 1, cs_hold_time = 1
*/
void bootloader_common_set_flash_cs_timing();