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xtensa/esp32: Move RTC WDT deinit after initial setup

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Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
This commit is contained in:
Gustavo Henrique Nihei 2021-06-24 14:45:54 -03:00 committed by Alan Carvalho de Assis
parent 8c70e4f1c1
commit db18a12844
1 changed files with 11 additions and 8 deletions
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19
arch/xtensa/src/esp32/esp32_start.c
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@ -86,14 +86,6 @@ void IRAM_ATTR __start(void)
uint32_t regval;
uint32_t sp;
/* Kill the watchdog timer */
putreg32(RTC_CNTL_WDT_WKEY_VALUE, RTC_CNTL_WDTWPROTECT_REG);
regval = getreg32(RTC_CNTL_WDTCONFIG0_REG);
regval &= ~RTC_CNTL_WDT_EN;
putreg32(regval, RTC_CNTL_WDTCONFIG0_REG);
putreg32(0, RTC_CNTL_WDTWPROTECT_REG);
/* Make sure that normal interrupts are disabled. This is really only an
* issue when we are started in un-usual ways (such as from IRAM). In this
* case, we can at least defer some unexpected interrupts left over from
@ -129,6 +121,17 @@ void IRAM_ATTR __start(void)
regval &= ~DPORT_APPCPU_CLKGATE_EN;
putreg32(regval, DPORT_APPCPU_CTRL_B_REG);
/* The 2nd stage bootloader enables RTC WDT to check on startup sequence
* related issues in application. Hence disable that as we are about to
* start the NuttX environment.
*/
putreg32(RTC_CNTL_WDT_WKEY_VALUE, RTC_CNTL_WDTWPROTECT_REG);
regval = getreg32(RTC_CNTL_WDTCONFIG0_REG);
regval &= ~RTC_CNTL_WDT_EN;
putreg32(regval, RTC_CNTL_WDTCONFIG0_REG);
putreg32(0, RTC_CNTL_WDTWPROTECT_REG);
/* Set CPU frequency configured in board.h */
esp32_clockconfig();