Thread (1 message) 1 message, 1 author, 2015-03-25

Re: [PATCH 7/7] ARM: dts: add OPPs for i.MX23/i.MX28

From: Stefan Wahren <hidden>
Date: 2015-03-25 20:20:00
Also in: linux-arm-kernel, linux-devicetree

Possibly related (same subject, not in this thread)

Hi Juergen,
Juergen Borleis [off-list ref] hat am 24. März 2015 um 21:45
geschrieben:


Stefan Wahren wrote:
quoted
[...]
Maybe you should take into account not to reduce VDD below 1.55 V if the SDRAM
controller runs above 196 MHz. The i.MX28 datasheet[1] lists these
restrictions. VDD powers the SDRAM controller as well. From the datasheet the
table "Frequency versus Voltage for EMICLK" shows:

EMICLK Fmax (MHz)
VDDD (V) DDR2 mDDR
--------------------------------
1.550 205.71 205.71
1.450 196.36 196.36
1.350 196.36 196.36

jbe

[1]
i.MX28 Applications
Processors for Consumer
Products
Silicon Version 1.2

Document Number: IMX28CEC
Rev. 3, 07/2012
thanks for pointing out. I will take care of it.

Stefan
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