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| author | Valentin Caron <[email protected]> | 2024-07-22 16:00:21 +0000 |
|---|---|---|
| committer | Alexandre Belloni <[email protected]> | 2024-08-14 09:37:07 +0000 |
| commit | bb7b0df2be5c6b7bfe0cf9c93067c5b1489566ca (patch) | |
| tree | 889b76b9334cabaf85b8a52679c85e6603c89b82 /drivers/rtc/class.c | |
| parent | rtc: stm32: add pinctrl and pinmux interfaces (diff) | |
| download | kernel-bb7b0df2be5c6b7bfe0cf9c93067c5b1489566ca.tar.gz kernel-bb7b0df2be5c6b7bfe0cf9c93067c5b1489566ca.zip | |
rtc: stm32: add Low Speed Clock Output (LSCO) support
RTC is able to output on a pin the "LSE" internal clock.
STM32 RTC is now registered as a clock provider.
It provides rtc_lsco clock, that means RTC_LSCO is output on either
RTC_OUT1 or RTC_OUT2_RMP, depending on pinmux DT property.
The clock is marked as CLK_IGNORE_UNUSED and CLK_IS_CRITICAL because
RTC_LSCO can be early required by devices needed it to init.
Add LSCO in pinmux functions.
Add "stm32_rtc_clean_outs" to disable LSCO. As RTC is part of "backup"
power domain, it is not reset during shutdown or reboot. So force LSCO
disable at probe.
Co-developed-by: Amelie Delaunay <[email protected]>
Signed-off-by: Amelie Delaunay <[email protected]>
Signed-off-by: Valentin Caron <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Diffstat (limited to 'drivers/rtc/class.c')
0 files changed, 0 insertions, 0 deletions