AnsweredAssumed Answered

VDD_ARM_CAP on 3.14.28

Question asked by Adrian McGrath on Feb 24, 2016
Latest reply on Feb 26, 2016 by Adrian McGrath

Hello All

 

I've been looking through postings on this and other forums for fixes to behaviour described as instability. During this process I was pointed to this posting:

The reason i.MX6DQ VDD_ARM_CAP setting was changed by L3.10.53_1.1.0-ga.

 

I'm using Kernel 3.14.28 (Yocto Fido) and checked on the status of the VDD_ARM_CAP voltage setting as described by Satoshi Shimoda in Sept 2015. Satoshi highlights line 33 in arch/arm/boot/dts/imx6q.dtsi which refers to the following section:

 

operating-points = <

     /*     kHz               uV */

           1200000           1275000

           996000            1250000

           852000            1250000

           792000            1175000           <== Value updated to increase stability

           396000            975000

>;

 

So my question is do any of the other values in this (or a related) section need to be updated for improved stability if operating at the higher clock frequencies?

 

Many thanks in advance.

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