esp_idf_sys

Constant soc_periph_uart_clk_src_legacy_t_UART_SCLK_RTC

Source 
pub const soc_periph_uart_clk_src_legacy_t_UART_SCLK_RTC: soc_periph_uart_clk_src_legacy_t = 8;
Expand description

< UART source clock is RC_FAST