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drivers: rtc: sam0: Add RTC calendar driver and clock fixes #81819

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drivers: rtc: sam0: Add RTC calendar driver and clock fixes #81819

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+2,064 −743

Commits on Nov 26, 2024

  1. devicetree: Introduce assigned-clock property 

    Some platforms require special clock selection options. This could be
made using the already defined assigned-clocks. This introduces the
assigned-clocks and assigned-clock-names properties to generalize those
conditions.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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  2. dts: rtc: sam0: Add clock properties 

    Add properties to differentiate the timer counter operating modes. This
properties are necessary to spetialize the driver to be used as a normal
16/32-bit counter or to provide the clock/calendar functions.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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  3. clocks: atmel: sam0: Fix gclk and mclk clock bindings 

    The Atmel SAM0 SoC enable peripherals clocks in distinct places: PM and
MCLK. The old devices had defined the peripheral clock enable bit at PM.
On the newer devices this was extracted on a dedicated memory section
called Master Clock (MCLK). This change excludes the dedicated bindings
in favor of a generic approach that cover all cases.

Now the clocks properties is complemented by the assigned-clocks
property. It gives the liberty to user to customize the clock source
from a generic clock or configure the direct connections.

All peripherals drivers were reworked with the newer solution.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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  4. soc: atmel: sam0: Configure GCLK[4] to RTC 

    Configure the Generic Clock Generator to be used as source to RTC.
The index 4 is now reserved to RTC.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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  5. drivers: rtc: sam0: Add realtime clock driver 

    Add Atmel sam0 rtc calendar driver.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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  6. boards: atmel: sam0: Add rtc configs 

    Add configurations to allow use of RTC driver and tests.

Signed-off-by: Gerson Fernando Budke <[email protected]>
    @nandojve
    nandojve committed Nov 26, 2024
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