On 20/08/2019 17:19:33+0200, megous@xxxxxxxxxx wrote: > From: Ondrej Jirman <megous@xxxxxxxxxx> > > RTC on H6 is mostly the same as on H5 and H3. It has slight differences > mostly in features that are not yet supported by this driver. > > Some differences are already stated in the comments in existing code. > One other difference is that H6 has extra bit in LOSC_CTRL_REG, called > EXT_LOSC_EN to enable/disable external low speed crystal oscillator. > > It also has bit EXT_LOSC_STA in LOSC_AUTO_SWT_STA_REG, to check whether > external low speed oscillator is working correctly. > > This patch adds support for enabling LOSC when necessary: > > - during reparenting > - when probing the clock > > H6 also has capacbility to automatically reparent RTC clock from > external crystal oscillator, to internal RC oscillator, if external > oscillator fails. This is enabled by default. Disable it during > probe. > > Signed-off-by: Ondrej Jirman <megous@xxxxxxxxxx> > Reviewed-by: Chen-Yu Tsai <wens@xxxxxxxx> > --- > drivers/rtc/rtc-sun6i.c | 40 ++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 38 insertions(+), 2 deletions(-) > Applied, thanks. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
