linksys wrt1900acs v2 boot problem

[Tony Dinh]

Hi all,

On Fri, Jan 6, 2023 at 9:35 AM Pali Rohár <pali at kernel.org> wrote:
>
> Hello Dilyan!
>
> On Tuesday 28 September 2021 22:01:40 Dilyan Lazarov wrote:
> > Hi,
> > I have a problem with my linksys wrt1900acs.
> > My main question is this a hardware problem or software problem?
> > Is it possible to address?
>
> This looks like DDR3 training SW issue problem. Marek worked on in and
> tried to address issue. He should know more details in this area.
>
> > I have started researching and have tried with "kwboot" under Windows VM -
> > Ubuntu 20 - Linux but I have a problem with usb serial connection. I have
> > tried several things but I understand that it isn't possible to start USB
> > to Serial on a Windows VM.
> > I will expect your response.
> > Thank you in advance.
>
> You need to use kwboot natively. It was heavily tested on Linux and I
> think it should work also on BSD systems. Windows systems are not really
> supported and kwboot will not work on them.
>
> > All the best
> > Dilyan
> >
> > I see the following Log from U-Boot with PuTTy under Windows 10:
> > BootROM - 1.73
> > Booting from NAND flash
> >
> > General initialization - Version: 1.0.0
> > Detected Device ID 6820
> > High speed PHY - Version: 2.0
> >
> > Init RD NAS topology Serdes Lane 3 is USB3
> > Serdes Lane 4 is SGMII
> > board SerDes lanes topology details:
> >  | Lane #  | Speed |  Type       |
> >  --------------------------------
> >  |   0    |  06   |  SATA0      |
> >  |   1    |  05   |  PCIe0      |
> >  |   2    |  06   |  SATA1      |
> >  |   3    |  05   |  USB3 HOST1 |
> >  |   4    |  05   |  PCIe1      |
> >  |   5    |  00   |  SGMII2     |
> >  --------------------------------
> > :** Link is Gen1, check the EP capability
> > PCIe, Idx 0: Link upgraded to Gen2 based on client cpabilities
> > :** Link is Gen1, check the EP capability
> > PCIe, Idx 1: remains Gen1
> > High speed PHY - Ended Successfully
> > DDR3 Training Sequence - Ver TIP-1.26.0
> > mvSysEnvGetTopologyUpdateInfo: TWSI Read failed
> > WL Supp: IF 0 busId 1 Failed !
> > WL Supp: IF 0 failed
> > ddr3TipDynamicWriteLevelingSupp failure
> > ********   DRAM initialization Failed (res 0x1)   ********
> > DDR3 run algorithm - FAILED 0x1
> > DDR3 Training Sequence - FAILED
> >
> >
> >  **********          DRAM initialization failed!   ********
> > --
> > Dilyan
>
> Could you please try to update U-Boot to the new version? If the issue
> is still there? Because DDR3 marvell driver was updated and it is
> possible that also your issue is fixed now too...

I can confirm that on the Synology DS116 board (also Armada 385, 1GB
DDR3). The last tests I ran on this board were built with
u-boot-2022.07 and did not see any problem with DDR3 training.

All the best,
Tony