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>
DTS property attributes are (by default) not required.
Explicitly specifying `required: false` is redundant.
Perhaps a warning to that effect would be useful.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
All in tree device drivers use some form of DEVICE_DT_GET
so we no longer need to require label properties.
Signed-off-by: Kumar Gala <galak@kernel.org>
This joins all clock control handling to same source
by using hal clock functions. It also brings ESP32C3
clock support.
Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
- Support PLL for Higher Frequencies 80,160,240 MHz
- Support XTAL Frequencies 26MHz, 40MHz
- Clock Driver can't be disabled, because all of the other drivers
will depend on it to get their operating Frequency based on chosen
clock source (XTAL/PLL).
- Add needed references to BBPLL i2c bus ROM functions.
- Add `rtc` node to Device Tree.
- Since All Peripherals Frequency is depending on CPU_CLK Source,
`clock-source` property added to CPU node
Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
Lucas Tamborrino