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Merge branch 'bugfix/fix_uart_reset_issue_on_esp32c3_backport_v4.3' into 'release/v4.3'

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bugfix(uart): reset uart0 core before uart apb reset(backport v4.3)

See merge request espressif/esp-idf!14462
This commit is contained in:
Michael (XIAO Xufeng)
2021-07-30 06:27:22 +00:00
parent 9d4af47fa7 427fe1bcde
commit 95c572c0d2
5 changed files with 30 additions and 6 deletions
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5
components/esp32c3/system_api_esp32c3.c
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@@ -31,6 +31,7 @@
#include "soc/rtc.h"
#include "soc/syscon_reg.h"
#include "soc/system_reg.h"
#include "soc/uart_reg.h"
#include "hal/wdt_hal.h"
/* "inner" restart function for after RTOS, interrupts & anything else on this
@@ -99,6 +100,10 @@ void IRAM_ATTR esp_restart_noos(void)
REG_WRITE(SYSTEM_CORE_RST_EN_REG, 0);
// Reset uart0 core first, then reset apb side.
// rom will clear this bit, as well as SYSTEM_UART_RST
SET_PERI_REG_MASK(UART_CLK_CONF_REG(0), UART_RST_CORE_M);
// Reset timer/spi/uart
SET_PERI_REG_MASK(SYSTEM_PERIP_RST_EN0_REG,
SYSTEM_TIMERS_RST | SYSTEM_SPI01_RST | SYSTEM_UART_RST);