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Revert "imx: mx6: ddr correct tRFC and tXS"

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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>
This commit is contained in:
Peng Fan 2015-09-01 11:03:14 +08:00 committed by Stefano Babic
parent b5e7586a73
commit 0eca9f6f0d
1 changed files with 2 additions and 2 deletions
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4
arch/arm/cpu/armv7/mx6/ddr.c
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@ -702,8 +702,8 @@ void mx6_ddr3_cfg(const struct mx6_ddr_sysinfo *sysinfo,
txs = DIV_ROUND_UP(170000, clkper) - 1; txs = DIV_ROUND_UP(170000, clkper) - 1;
break; break;
case 4: /* 4Gb per chip */ case 4: /* 4Gb per chip */
trfc = DIV_ROUND_UP(300000, clkper) - 1; trfc = DIV_ROUND_UP(260000, clkper) - 1;
txs = DIV_ROUND_UP(310000, clkper) - 1; txs = DIV_ROUND_UP(270000, clkper) - 1;
break; break;
case 8: /* 8Gb per chip */ case 8: /* 8Gb per chip */
trfc = DIV_ROUND_UP(350000, clkper) - 1; trfc = DIV_ROUND_UP(350000, clkper) - 1;