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Merge branch 'fix/esp_flash_compatible_with_rom' into 'master'

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esp_flash: fix a compatibility issue working with the ROM

See merge request espressif/esp-idf!5462
This commit is contained in:
Angus Gratton 2019-07-29 19:18:20 +08:00
commit f0442e744d
1 changed files with 11 additions and 0 deletions
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11
components/soc/src/hal/spi_flash_hal_iram.c
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@ -38,6 +38,17 @@ esp_err_t spi_flash_hal_device_config(spi_flash_host_driver_t *driver)
spi_flash_ll_reset(dev);
spi_flash_ll_set_cs_pin(dev, drv_data->cs_num);
spi_flash_ll_set_clock(dev, &drv_data->clock_conf);
/*
* workaround for the ROM: the ROM, as well as the OpenOCD, don't know the
* clock registers and the dummy are modified this help the ROM to read and
* write correctly according to the new dummy len.
*/
if (dev == &SPI1) {
//0 for cache, 1 for SPI1
extern uint8_t g_rom_spiflash_dummy_len_plus[];
g_rom_spiflash_dummy_len_plus[1] = drv_data->extra_dummy;
}
return ESP_OK;
}