drivers: ddr: Add DDR2 SDRAM controller driver for Microchip PIC32.
This driver initializes PIC32 DDR2 SDRAM controller and internal DDR2 Phy module. DDR2 controller operates in half-rate mode (upto 533MHZ frequency). Signed-off-by: NPaul Thacker <paul.thacker@microchip.com> Signed-off-by: NPurna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: NDaniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: NTom Rini <trini@konsulko.com> Reviewed-by: NSimon Glass <sjg@chromium.org>
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drivers/ddr/microchip/Makefile
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drivers/ddr/microchip/ddr2.c
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drivers/ddr/microchip/ddr2_regs.h
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