Currently, the Goldfish RTC driver exclusively relies on device tree
to retrieve the base address, failing immediately if dev_read_addr()
returns FDT_ADDR_T_NONE. This restriction prevents the driver from
being used on platforms that instantiate devices via U_BOOT_DRVINFO()
instead of device tree, such as the QEMU m68k virt machine.

Add support for platform data to address this limitation. Introduce a
new .of_to_plat hook to handle device tree parsing and populate the
platform data. Update the probe function to rely exclusively on this
platform data, enabling support for both Device Tree and manual
instantiation.

Introduce a new header file include/goldfish_rtc.h to define the
platform data structure.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Add support for the Microcrystal RV3032 RTC.

Signed-off-by: Michael Walle <mwalle@kernel.org>

Add support for the Microcrystal RV8263 and compatible RTCs. The
driver's name was taken from linux. It should work with any NXP PCF85063
compatible RTCs. It was tested with a RV8263.

Signed-off-by: Michael Walle <mwalle@kernel.org>

As u-boot doesn't have any loadable modules, tristate doesn't make
sense. Convert it to bool.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

All instances of the U_BOOT_DRIVER must use a unique name or they will
lead to link time failures due to name space conflicts when both are
present. In this case the driver was reusing the max313xx name.

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

The MAX31331 was not correctly updating the seconds when
setting the time and would return the seconds previously set.

Like the MAX31343, a delay needs to be added after setting the
time. Wait one second after writing so that the date command shows the
correct time.

Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Bruce Adams <bruce.adams@alliedtelesis.co.nz>
Signed-off-by: Ben Hoelker <ben.hoelker@alliedtelesis.co.nz>

When calling writel we do not have a return value to check or pass
along. This function should therefore be void and not return what writel
gives us.

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

This driver makes calls to in8/out8(). On PowerPC these are separate and
real calls but elsewhere they are able to simply be wrappers to
inb/outb. Rework this logic to be able to build this driver on more
platforms.

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

The Marvell RTC rtc driver cannot build without access to some
platform specific header files. Express that requirements in Kconfig as
well.

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

Add support for Dallas/Maxim ds1672 32bit counter RTC.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>