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bootloader, rtc: don't disable PLL if it is already enabled

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This commit is contained in:
Ivan Grokhotkov
2020-04-30 16:50:41 +02:00
parent 19c73192ba
commit 0620890028
2 changed files with 22 additions and 18 deletions
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7
components/soc/src/esp32s2/rtc_clk.c
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@@ -41,7 +41,8 @@ static const char *TAG = "rtc_clk";
#define RTC_PLL_FREQ_480M 480
// Current PLL frequency, in MHZ (320 or 480). Zero if PLL is not enabled.
static int s_cur_pll_freq;
// On the ESP32-S2, 480MHz PLL is enabled at reset.
static int s_cur_pll_freq = RTC_PLL_FREQ_480M;
static void rtc_clk_cpu_freq_to_8m(void);
@@ -374,7 +375,7 @@ void rtc_clk_cpu_freq_set_config(const rtc_cpu_freq_config_t* config)
if (soc_clk_sel != DPORT_SOC_CLK_SEL_XTAL) {
rtc_clk_cpu_freq_to_xtal(xtal_freq, 1);
}
if (soc_clk_sel == DPORT_SOC_CLK_SEL_PLL) {
if (soc_clk_sel == DPORT_SOC_CLK_SEL_PLL && config->source_freq_mhz != s_cur_pll_freq) {
rtc_clk_bbpll_disable();
}
if (config->source == RTC_CPU_FREQ_SRC_XTAL) {
@@ -463,7 +464,7 @@ void rtc_clk_cpu_freq_set_xtal(void)
int freq_mhz = (int) rtc_clk_xtal_freq_get();
rtc_clk_cpu_freq_to_xtal(freq_mhz, 1);
rtc_clk_bbpll_disable();
/* BBPLL is kept enabled */
}
/**