From 016b63dacf43d15ddce7f826844471e4ea5ecdba Mon Sep 17 00:00:00 2001
From: "chaijie@espressif.com" <chaijie@espressif.com>
Date: Fri, 3 Nov 2023 14:33:20 +0800
Subject: [PATCH] fix(bbpll): fix bbpll calibration may stop early
 bug(ESP32C2/S3/C6/H2)

---
 components/esp_hw_support/port/esp32c2/rtc_clk.c | 1 +
 components/esp_hw_support/port/esp32c6/rtc_clk.c | 1 +
 components/esp_hw_support/port/esp32h2/rtc_clk.c | 1 +
 components/esp_hw_support/port/esp32s3/rtc_clk.c | 1 +
 4 files changed, 4 insertions(+)

diff --git a/components/esp_hw_support/port/esp32c2/rtc_clk.c b/components/esp_hw_support/port/esp32c2/rtc_clk.c
index db7734f20f..4d05244499 100644
--- a/components/esp_hw_support/port/esp32c2/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32c2/rtc_clk.c
@@ -126,6 +126,7 @@ static void rtc_clk_bbpll_configure(rtc_xtal_freq_t xtal_freq, int pll_freq)
     clk_ll_bbpll_set_config(pll_freq, xtal_freq);
     /* WAIT CALIBRATION DONE */
     while(!regi2c_ctrl_ll_bbpll_calibration_is_done());
+    esp_rom_delay_us(10);
     /* BBPLL CALIBRATION STOP */
     regi2c_ctrl_ll_bbpll_calibration_stop();
 
diff --git a/components/esp_hw_support/port/esp32c6/rtc_clk.c b/components/esp_hw_support/port/esp32c6/rtc_clk.c
index 53644617ca..08fd122056 100644
--- a/components/esp_hw_support/port/esp32c6/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32c6/rtc_clk.c
@@ -168,6 +168,7 @@ static void rtc_clk_bbpll_configure(rtc_xtal_freq_t xtal_freq, int pll_freq)
     clk_ll_bbpll_set_config(pll_freq, xtal_freq);
     /* WAIT CALIBRATION DONE */
     while(!regi2c_ctrl_ll_bbpll_calibration_is_done());
+    esp_rom_delay_us(10);
     /* BBPLL CALIBRATION STOP */
     regi2c_ctrl_ll_bbpll_calibration_stop();
     rtc_clk_enable_i2c_ana_master_clock(false);
diff --git a/components/esp_hw_support/port/esp32h2/rtc_clk.c b/components/esp_hw_support/port/esp32h2/rtc_clk.c
index bb8e288b53..7e1b2fe827 100644
--- a/components/esp_hw_support/port/esp32h2/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32h2/rtc_clk.c
@@ -185,6 +185,7 @@ static void rtc_clk_bbpll_configure(rtc_xtal_freq_t xtal_freq, int pll_freq)
     clk_ll_bbpll_set_config(pll_freq, xtal_freq);
     /* WAIT CALIBRATION DONE */
     while(!regi2c_ctrl_ll_bbpll_calibration_is_done());
+    esp_rom_delay_us(10);
     /* BBPLL CALIBRATION STOP */
     regi2c_ctrl_ll_bbpll_calibration_stop();
     rtc_clk_enable_i2c_ana_master_clock(false);
diff --git a/components/esp_hw_support/port/esp32s3/rtc_clk.c b/components/esp_hw_support/port/esp32s3/rtc_clk.c
index bfa6fc7987..9af57a63a3 100644
--- a/components/esp_hw_support/port/esp32s3/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32s3/rtc_clk.c
@@ -172,6 +172,7 @@ static void rtc_clk_bbpll_configure(rtc_xtal_freq_t xtal_freq, int pll_freq)
     clk_ll_bbpll_set_config(pll_freq, xtal_freq);
     /* WAIT CALIBRATION DONE */
     while(!regi2c_ctrl_ll_bbpll_calibration_is_done());
+    esp_rom_delay_us(10);
     /* BBPLL CALIBRATION STOP */
     regi2c_ctrl_ll_bbpll_calibration_stop();