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authorPeng Fan <Peng.Fan@freescale.com>2015-09-01 11:03:14 +0800
committerStefano Babic <sbabic@denx.de>2015-09-13 10:26:45 +0200
commit0eca9f6f0d073fc4773ec0c698ba9899ac0c5cf0 (patch)
tree6d6dc76cd781cfd7bb13626638649ab1dcfa3b0e
parentb5e7586a73d4eb7b0aa9c597f293a584a2a1800a (diff)
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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.c4
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 cf5587b..6b039e4 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;