| Message ID | 1441076595-20838-1-git-send-email-Peng.Fan@freescale.com |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Stefano Babic |
| Headers | show |
On 01/09/2015 05:03, Peng Fan wrote: > 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 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; > Applied to u-boot-imx, thanks ! Best regards, Stefano Babic
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;
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(-)