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ARM: AM43xx: EPOS_EVM: Add support for LPDDR2
AM4372 EPOS EVM has 1GB LPDDR2(Part no: MT42L256M32D2LG-25 WT:A)
Adding LPDDR2 init sequence and register details for the same.
Below is the brief description of LPDDR2 init sequence:
-> Configure VTP
-> Configure DDR IO settings
-> Disable initialization and refreshes until EMIF registers are programmed.
-> Program Timing registers
-> Program PHY control and Temp alert and ZQ config registers.
-> Enable initialization and refreshes and configure SDRAM CONFIG register
-> Wait till initialization is complete and the configure MR registers.
Signed-off-by:
Lokesh Vutla <lokeshvutla@ti.com>
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- arch/arm/cpu/armv7/am33xx/ddr.c 117 additions, 0 deletionsarch/arm/cpu/armv7/am33xx/ddr.c
- arch/arm/cpu/armv7/am33xx/emif4.c 21 additions, 1 deletionarch/arm/cpu/armv7/am33xx/emif4.c
- arch/arm/include/asm/arch-am33xx/clocks_am33xx.h 3 additions, 0 deletionsarch/arm/include/asm/arch-am33xx/clocks_am33xx.h
- arch/arm/include/asm/arch-am33xx/cpu.h 5 additions, 0 deletionsarch/arm/include/asm/arch-am33xx/cpu.h
- arch/arm/include/asm/arch-am33xx/ddr_defs.h 31 additions, 2 deletionsarch/arm/include/asm/arch-am33xx/ddr_defs.h
- arch/arm/include/asm/arch-am33xx/hardware_am43xx.h 1 addition, 0 deletionsarch/arm/include/asm/arch-am33xx/hardware_am43xx.h
- arch/arm/include/asm/emif.h 12 additions, 0 deletionsarch/arm/include/asm/emif.h
- board/ti/am43xx/board.c 66 additions, 0 deletionsboard/ti/am43xx/board.c
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