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Some Kconfig options we have are promptless and off-by-default and
instead can only be enabled by being selected from platform options.
For some of those that aren't compile testable, add a new
COMPILE_TEST-only prompt.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the DDR driver for the i.MX8MQ/i.MX8MM. It's taken from
U-Boot v2020.04-rc1 with slight modifications for barebox
The i.MX8MQ boards in the tree currently use the output of an earlier
version of the NXP i.MX8M DDR Tool which doesn't use a controller driver
but instead does most stuff in board code. It seems this can coexist
with the new driver, only a few helper functions that previously lived
in arch/arm/mach-imx/imx8-ddrc.c are now provided by the new driver.
Tested on an i.MX8MM EVK
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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fsl_ddr_set_memctl_regs() is not only used internally in the DDR
controller driver, but can also be called by the boards to configure
a static setting. Move the prototype to include/ where it can be
used by board code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the Freescale ddr driver used on various PowerPC and
Layerscape SoCs. This is based on U-Boot-2019.01 but with many
adjustments:
- PowerPC support has been removed
- CPP #ifdeffery replaced with C
- No more global variables/functions expected from the driver,
configuration is passed by the board code which calls the driver
We already have the driver in the tree in an older version forked from
U-Boot-2013.04. This version lacks Layerscape support and many quirks
in the driver are PowerPC specific. Since the existing driver should
work on all known PowerPC and PowerPC is a dead end I decided not to
improve the existing driver and instead add a new Layerscape specific
driver.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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