[MinnowBoard] How do I know if there is power going to my Silverjaw lure?

[Berth-Olof Bergman]

Hi,

I think you will not be able to get it working due to the PWROK signal is used for PCI slot reset. As the PWROK is generated by main board the power are not stable enough to go properly out of reset, so the device will not present. The PCI slot reset should be based on the platform reset signal that goes active much later than the PWROK.

A minimum reset of 100 milliseconds are required for PCI bus from the moment that power is stable. The silver jaw lure violates these rule. That’s why PCI devices connected to the lure does not show up on reset, i.e. PCI bus is reset, but PWROK is active and no reset is generated to the PCI device.

Perhaps the Silverjaw lure has been updated as I reported this bug long time ago or you may modify the lure by cutting the PWROK signal from the slot and attach  the PLTRST# signal with a wire.

Best regards,

B-O Bergman
Winzent Technologies
 
> 18 sep 2015 kl. 07:21 skrev Vasanthi, Jagatha <jagatha.vasanthi at intel.com>:
> 
> Thank you all for your helpful tips.
>  
> My power supply is only 5V, 2A. I should up it to 3A or 4A as suggested by some of you.
>  
> I do have a separate power supply for the adapter and have ensured it is connected to the mPCIe slot.
>  
> @Jeremy, do you remember what version of firmware you updated to? I’m using the core-sato-sdk image from the wiki page and I think that’s at 3.19.
>  
> Thanks!
> Vasanthi
>   <>
> From: elinux-MinnowBoard [mailto:elinux-minnowboard-bounces at lists.elinux.org] On Behalf Of Jeremy Hoel
> Sent: Thursday, September 17, 2015 12:35 PM
> To: MinnowBoard Development and Community Discussion
> Subject: Re: [MinnowBoard] How do I know if there is power going to my Silverjaw lure?
>  
> I had this problem before, and one my board.. it seems the high speed connector wasn't working well.  Running a 3 Amp power supply with help, also, on the board you should be able to check for power at a few test points (they where labeled I thought).    Also, I needed a firmware update to help it work too.
>  
> On Thu, Sep 17, 2015 at 1:20 PM, Vasanthi, Jagatha <jagatha.vasanthi at intel.com <mailto:jagatha.vasanthi at intel.com>> wrote:
> Hi all
> Is there a way to tell if my silverjaw lure has power going to it when I connect it to the Minnowboard Max? I don't see any led lights turn on.
> 
> I have a rather unusual setup with my minnowboard max.  I'm trying to connect a NVMe PCIe SSD to the silverjaw lure by using a "PCIe x1 to mPCIe" adapter on the mPCIe slot.
> I'm not able to see this SSD. As a first step, I'm trying to see if there are any power issues.
> 
> Thanks!
> Vasanthi
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