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| author | Fabio Estevam <fabio.estevam@nxp.com> | 2016-08-29 20:37:15 -0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2016-09-06 18:22:48 +0200 |
| commit | edf0093732225c2fd0791c3864e9a3eef1f92f19 (patch) | |
| tree | 1a5bce06d282527778b608f35c39aa68065bd98e /board/solidrun | |
| parent | 946db0cbd01090b35eb1439fa7c4ca7e015fc18b (diff) | |
| download | u-boot-edf0093732225c2fd0791c3864e9a3eef1f92f19.tar.gz u-boot-edf0093732225c2fd0791c3864e9a3eef1f92f19.tar.bz2 u-boot-edf0093732225c2fd0791c3864e9a3eef1f92f19.zip | |
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>
Diffstat (limited to 'board/solidrun')
| -rw-r--r-- | board/solidrun/mx6cuboxi/mx6cuboxi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c index cafa348150..3a1ce240b8 100644 --- a/board/solidrun/mx6cuboxi/mx6cuboxi.c +++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c @@ -605,6 +605,8 @@ static void spl_dram_init(int width) .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ .ddr_type = DDR_TYPE_DDR3, + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ }; if (is_mx6dq()) |