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Fabio Estevam edf0093732 mx6: ddr: Allow changing REFSEL and REFR fields 
Currently MX6 SPL DDR initialization hardcodes the REF_SEL and
REFR fields of the MDREF register as 1 and 7, respectively for
DDR3 and 0 and 3 for LPDDR2.

Looking at the MDREF initialization done via DCD we see that
boards do need to initialize these fields differently:

$ git grep 0x021b0020 board/
board/bachmann/ot1200/mx6q_4x_mt41j128.cfg:DATA 4 0x021b0020 0x00005800
board/ccv/xpress/imximage.cfg:DATA 4 0x021b0020 0x00000800 /* MMDC0_MDREF */
board/freescale/mx6qarm2/imximage.cfg:DATA 4 0x021b0020 0x7800
board/freescale/mx6qarm2/imximage.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6qarm2/imximage_mx6dl.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6qarm2/imximage_mx6dl.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6qsabreauto/imximage.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6qsabreauto/mx6dl.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6qsabreauto/mx6qp.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6sabresd/mx6dlsabresd.cfg:DATA 4      0x021b0020 0x00005800
board/freescale/mx6sabresd/mx6q_4x_mt41j128.cfg:DATA 4 0x021b0020 0x00005800
board/freescale/mx6slevk/imximage.cfg:DATA 4 0x021b0020 0x00001800
board/freescale/mx6sxsabreauto/imximage.cfg:DATA 4 0x021b0020 0x00000800
board/freescale/mx6sxsabresd/imximage.cfg:DATA 4 0x021b0020 0x00000800
board/warp/imximage.cfg:DATA 4 0x021b0020 0x00001800

So introduce a mechanism for users to be able to configure
REFSEL and REFR fields as needed.

Keep all the mx6 SPL users in their current REF_SEL and REFR values,
so no functional changes for the existing users.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Eric Nelson <eric@nelint.com>
2016-09-06 18:22:48 +02:00
..
arc arc: Rename AXS101 board to more generic AXS10x 2016-08-05 12:50:33 +03:00
arm mx6: ddr: Allow changing REFSEL and REFR fields 2016-09-06 18:22:48 +02:00
avr32 avr32: Drop unused code in u-boot.h 2016-05-27 15:39:52 -04:00
blackfin configs: Re-sync almost all of cmd/Kconfig 2016-04-25 15:09:40 -04:00
m68k net: mii: Changes not made by spatch 2016-08-15 15:29:03 -05:00
microblaze Remove unneeded remnants of bcopy(). 2016-06-06 13:39:18 -04:00
mips net: mii: Use spatch to update miiphy_register 2016-08-15 15:26:33 -05:00
nds32 arm, nds32, sh: remove useless ioremap()/iounmap() defines 2016-07-14 18:22:25 -04:00
nios2 Delete tests of CONFIG_OF_LIBFDT when testing CONFIG_OF_BOARD_SETUP 2016-05-27 15:41:16 -04:00
openrisc openrisc: Drop the arch-specific board init 2016-05-27 15:39:50 -04:00
powerpc net: mii: Changes not made by spatch 2016-08-15 15:29:03 -05:00
sandbox cmd: Split 'bootz' and 'booti' out from 'bootm' 2016-08-20 11:35:07 -04:00
sh arm, nds32, sh: remove useless ioremap()/iounmap() defines 2016-07-14 18:22:25 -04:00
sparc Fix spelling of "transferred". 2016-03-22 12:16:16 -04:00
x86 x86: efi: Fix EFI 64-bit payload build warnings 2016-08-30 09:26:05 +08:00
xtensa xtensa: add support for the 'xtfpga' evaluation board 2016-08-15 18:46:40 -04:00
.gitignore .gitignore: drop include/asm/proc from ignore pattern 2014-06-19 11:18:54 -04:00
Kconfig xtensa: add support for the xtensa processor architecture [2/2] 2016-08-15 18:46:38 -04:00