Merge branch 'fix/fix_xtal32k_power_breaks_adc_v5.1' into 'release/v5.1'

fix(esp_system): fix XTAL32K power breaks ADC function on 32k XTAL clock pin (v5.1)

See merge request espressif/esp-idf!43391

Author: Jiang Jiang Jian

components/esp_system/port/soc/esp32c6/clk.c

@@ -177,6 +177,14 @@ static void select_rtc_slow_clk(soc_rtc_slow_clk_src_t rtc_slow_clk_src)
         if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_RC32K) {
             rtc_clk_rc32k_enable(false);
         }
+        // We have enabled all LP clock power in pmu_init, re-initialize the LP clock power based on the slow clock source after selection.
+        pmu_lp_power_t lp_clk_power = {
+            .xpd_xtal32k = (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_XTAL32K) || (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_OSC_SLOW),
+            .xpd_rc32k = (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_RC32K),
+            .xpd_fosc = 1,
+            .pd_osc = 0
+        };
+        pmu_ll_lp_set_clk_power(&PMU, PMU_MODE_LP_ACTIVE, lp_clk_power.val);
 
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.

components/esp_system/port/soc/esp32h2/clk.c

@@ -178,6 +178,14 @@ static void select_rtc_slow_clk(soc_rtc_slow_clk_src_t rtc_slow_clk_src)
         if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_RC32K) {
             rtc_clk_rc32k_enable(false);
         }
+        // We have enabled all LP clock power in pmu_init, re-initialize the LP clock power based on the slow clock source after selection.
+        pmu_lp_power_t lp_clk_power = {
+            .xpd_xtal32k = (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_XTAL32K) || (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_OSC_SLOW),
+            .xpd_rc32k = (rtc_slow_clk_src == SOC_RTC_SLOW_CLK_SRC_RC32K),
+            .xpd_fosc = 1,
+            .pd_osc = 0
+        };
+        pmu_ll_lp_set_clk_power(&PMU, PMU_MODE_LP_ACTIVE, lp_clk_power.val);
 
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.