This function is a no-op. Remove it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20231216193843.2463779-3-seanga2@gmail.com

The Goldfish RTC is a virtual device which may be supplied by QEMU.
It is enabled by default on QEMU's RISC-V virt machine.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

In some designs the MAX313xx RTC may need calibration to cope with
oscillator inaccuracies. Provide read8/write8 ops so that the registers
can be accessed. Because the driver covers a range of MAX313xx variants
no attempt is made to ensure the register is valid.

Signed-off-by: Chris Packham <judge.packham@gmail.com>

Adding support for Analog Devices MAX313XX series RTCs.

This is ported from the Linux driver and adapted for use in u-boot.
Notable differences are
- handling of tm_year and tm_mon differ
- clock source support is omitted
- hwmon support for the MAX31328 and MAX31343 is omitted
- rtc_ops->reset is added

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

These operations are required by dm_rtc_read and
dm_bootcount_get helpers.

Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

At present we enable the sandbox RTC driver for all builds. Add a separate
Kconfig option to control this, so that it can be disabled in TPL, where
it is not needed.

Signed-off-by: Simon Glass <sjg@chromium.org>

These drivers are not used and have not been converted to driver model.
Drop them and references to the non-existent CONFIG options they use.

Signed-off-by: Simon Glass <sjg@chromium.org>

This adds support for reading the battery-backed memory present on these
RTCs. This modifies the read/write methods to access the RAM instead of
raw register offsets. No one was using these in-tree, so we should be
fine changing them.

We use the "standard" address space window to access the RAM. The
extension RAM address register has some reserved bits, but we write the
whole thing for simplicity (as these bits default to 0).

Signed-off-by: Sean Anderson <sean.anderson@seco.com>

Support Holtek HT1380/HT1381 Serial Timekeeper Chip. It provides seconds
, minutes, hours, day of the week, date, month and year information.

Datasheet:
https://www.holtek.com.tw/documents/10179/11842/ht1380_1v130.pdf

Signed-off-by: Sergei Antonov <saproj@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Perform a simple rename of CONFIG_FTRTC010_PCLK to CFG_FTRTC010_PCLK

Signed-off-by: Tom Rini <trini@konsulko.com>