From 0eca9f6f0d073fc4773ec0c698ba9899ac0c5cf0 Mon Sep 17 00:00:00 2001 From: Peng Fan <Peng.Fan@freescale.com> Date: Tue, 1 Sep 2015 11:03:14 +0800 Subject: [PATCH] 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> --- arch/arm/cpu/armv7/mx6/ddr.c | 4 ++-- 1 file 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; -- 2.39.5