rtc: pcf2127: add flag for watchdog register value read support

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The watchdog value register cannot be read on the PCF2131 after being
set.

Add a new flag to identify which variant has read access to this
register, and use this flag to selectively test if watchdog timer was
started by bootloader.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20230622145800.2442116-16-hugo@hugovil.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Hugo Villeneuve 2023-06-22 10:57:58 -04:00 • committed by Alexandre Belloni

parent adb9675d74

commit 081602a1d8

1 changed files with 14 additions and 6 deletions

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drivers/rtc/rtc-pcf2127.c

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