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| author | Peng Fan <Peng.Fan@freescale.com> | 2015-09-01 11:03:14 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-09-13 10:26:45 +0200 |
| commit | 0eca9f6f0d073fc4773ec0c698ba9899ac0c5cf0 (patch) | |
| tree | 6d6dc76cd781cfd7bb13626638649ab1dcfa3b0e | |
| parent | b5e7586a73d4eb7b0aa9c597f293a584a2a1800a (diff) | |
| download | talos-obmc-uboot-0eca9f6f0d073fc4773ec0c698ba9899ac0c5cf0.tar.gz talos-obmc-uboot-0eca9f6f0d073fc4773ec0c698ba9899ac0c5cf0.zip | |
Revert "imx: mx6: ddr correct tRFC and tXS"
This reverts commit 059323fb6a8f21637bb617919715c2427f24777c.
This commit 059323fb6a8f21637bb617919715c2427f24777c use JESD79-3E which
is not the newest spec. Should use JESD79-3F in which tRFC is 260ns for
4Gb chip.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/ddr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c index cf5587be54..6b039e4531 100644 --- a/arch/arm/cpu/armv7/mx6/ddr.c +++ b/arch/arm/cpu/armv7/mx6/ddr.c @@ -702,8 +702,8 @@ void mx6_ddr3_cfg(const struct mx6_ddr_sysinfo *sysinfo, txs = DIV_ROUND_UP(170000, clkper) - 1; break; case 4: /* 4Gb per chip */ - trfc = DIV_ROUND_UP(300000, clkper) - 1; - txs = DIV_ROUND_UP(310000, clkper) - 1; + trfc = DIV_ROUND_UP(260000, clkper) - 1; + txs = DIV_ROUND_UP(270000, clkper) - 1; break; case 8: /* 8Gb per chip */ trfc = DIV_ROUND_UP(350000, clkper) - 1; |
