esp_idf_svc::sys

Constant soc_module_clk_t_SOC_MOD_CLK_RTC_FAST

Source 
pub const soc_module_clk_t_SOC_MOD_CLK_RTC_FAST: u32 = 2; // 2u32
Expand description

< RTC_FAST_CLK can be sourced from XTAL_D2 or RC_FAST by configuring soc_rtc_fast_clk_src_t