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soc: esp32xx: refactor clock and RTC subsystems

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The RTC subsystem in espressif's SOCs, among other tasks
is responsible for clock selection for CPU and for low
power domain clocks such as RTC_SLOW and RTC_FAST.

This commit allows for proper clock source and rate
selection for CPU, using the espressif,riscv and
espressif,xtensa-lx6/7 bindings.

It also enables clock selection for RTC_FAST and RTC_SLOW,
that impacts some peripherals, such as rtc_timer.

Signed-off-by: Lucas Tamborrino <lucas.tamborrino@espressif.com>
This commit is contained in:
Lucas Tamborrino 2024-05-02 16:39:17 -03:00 • committed by Carles Cufí
commit e282b0ea84
79 changed files with 629 additions and 996 deletions
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8
boards/espressif/esp32s3_devkitm/esp32s3_devkitm_procpu.dts
View file

@ -42,14 +42,6 @@
};
};
&cpu0 {
clock-frequency = <ESP32_CLK_CPU_240M>;
};
&cpu1 {
clock-frequency = <ESP32_CLK_CPU_240M>;
};
&usb_serial {
status = "okay";
};