Jetson TK1 and kernel 4.8

[Timothy Krantz]

Am I the only one who is having trouble with a Jetson TK1 and fedora 25 with
4.8 series kernels?

Mine has as of yet failed to boot on any of them.

But it boots just fine if I drop back to the last 4.7 kernel.

Tim

[Peter Robinson]

On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
 wrote:
> Am I the only one who is having trouble with a Jetson TK1 and fedora 25 with
> 4.8 series kernels?
>
> Mine has as of yet failed to boot on any of them.

Mine is currently running 4.8.1-1.fc25 without issues, just upgrading
it to the latest now to test that too.

[Paul Whalen]

----- Original Message -----
> On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
>  wrote:
> > Am I the only one who is having trouble with a Jetson TK1 and fedora 25
> > with
> > 4.8 series kernels?
> >
> > Mine has as of yet failed to boot on any of them.
>
> Mine is currently running 4.8.1-1.fc25 without issues, just upgrading
> it to the latest now to test that too.

Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to 4.8.4-301.fc25 without
any issues. Could you post output of your failure?

Paul
> arm mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

[Peter Robinson]

On Fri, Oct 28, 2016 at 4:28 PM, Peter Robinson  wrote:
> On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
>  wrote:
> > Am I the only one who is having trouble with a Jetson TK1 and fedora 25 with
> > 4.8 series kernels?
> >
> > Mine has as of yet failed to boot on any of them.
>
> Mine is currently running 4.8.1-1.fc25 without issues, just upgrading
> it to the latest now to test that too.

Latest 4.8.4-301 is fine for me too:
https://paste.fedoraproject.org/462455/67029314/

[Timothy Krantz]

> -----Original Message-----
> From: Paul Whalen [mailto:[e-mail]]
> Sent: Friday, October 28, 2016 11:41 AM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
>
> ----- Original Message -----
> > On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
> >  wrote:
> > > Am I the only one who is having trouble with a Jetson TK1 and fedora
> > > 25 with
> > > 4.8 series kernels?
> > >
> > > Mine has as of yet failed to boot on any of them.
> >
> > Mine is currently running 4.8.1-1.fc25 without issues, just upgrading
> > it to the latest now to test that too.
>
> Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to 4.8.4-301.fc25
> without any issues. Could you post output of your failure?
>
> Paul
> > arm mailing list -- [e-mail] To unsubscribe send an
> > email to [e-mail]

Thanks for the response.

Attached are the logs from a failing 4.8.3 and the last working 4.67.

None of 4.7 worked for me either.

Thanks for any advice!

Tim

[Paul Whalen]

----- Original Message -----
> > -----Original Message-----
> > From: Paul Whalen [mailto:[e-mail]]
> > Sent: Friday, October 28, 2016 11:41 AM
> > To: Timothy Krantz 
> > Cc: [e-mail]
> > Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> >
> > ----- Original Message -----
> > > On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
> > >  wrote:
> > > > Am I the only one who is having trouble with a Jetson TK1 and fedora
> > > > 25 with
> > > > 4.8 series kernels?
> > > >
> > > > Mine has as of yet failed to boot on any of them.
> > >
> > > Mine is currently running 4.8.1-1.fc25 without issues, just upgrading
> > > it to the latest now to test that too.
> >
> > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to 4.8.4-301.fc25
> > without any issues. Could you post output of your failure?
> >
> > Paul

You might have better luck with a more recent version of U-Boot. I'm running 
U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > arm mailing list -- [e-mail] To unsubscribe send an
> > > email to [e-mail]
>
> Thanks for the response.
>
> Attached are the logs from a failing 4.8.3 and the last working 4.67.
>
> None of 4.7 worked for me either.
>
> Thanks for any advice!
>
> Tim

[Timothy Krantz]

> -----Original Message-----
> From: Paul Whalen [mailto:[e-mail]]
> Sent: Friday, October 28, 2016 2:51 PM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
>
> ----- Original Message -----
> > > -----Original Message-----
> > > From: Paul Whalen [mailto:[e-mail]]
> > > Sent: Friday, October 28, 2016 11:41 AM
> > > To: Timothy Krantz 
> > > Cc: [e-mail]
> > > Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> > >
> > > ----- Original Message -----
> > > > On Fri, Oct 28, 2016 at 3:43 PM, Timothy Krantz
> > > >  wrote:
> > > > > Am I the only one who is having trouble with a Jetson TK1 and
> > > > > fedora
> > > > > 25 with
> > > > > 4.8 series kernels?
> > > > >
> > > > > Mine has as of yet failed to boot on any of them.
> > > >
> > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > upgrading it to the latest now to test that too.
> > >
> > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to 4.8.4-301.fc25
> > > without any issues. Could you post output of your failure?
> > >
> > > Paul
>
> You might have better luck with a more recent version of U-Boot. I'm running
> U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.

That made sense to me so I upgraded to the uboot that you are using but same problem.

Attached log.

Thanks,

Tim

[Peter Robinson]

> > > > > > Mine has as of yet failed to boot on any of them.
> > > > >
> > > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > > upgrading it to the latest now to test that too.
> > > >
> > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to 4.8.4-301.fc25
> > > > without any issues. Could you post output of your failure?
> > > >
> > > > Paul
> >
> > You might have better luck with a more recent version of U-Boot. I'm running
> > U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
>
> That made sense to me so I upgraded to the uboot that you are using but same problem.

Do you have any extra peripherals added like a mPCIe card, camera or
other such things or is it just the base board? What device do you
have the rootfs on? eMMC, SD or SATA?

I have mine running as a bare device with the OS on the eMMC, I think
Paul might have the OS on a sata SSD. Just trying to work out what if
any differences there are here as there's not much that can be
different.

Peter

[Timothy Krantz]

> -----Original Message-----
> From: Peter Robinson [mailto:[e-mail]]
> Sent: Saturday, October 29, 2016 4:52 AM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> > > > > > > Mine has as of yet failed to boot on any of them.
> > > > > >
> > > > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > > > upgrading it to the latest now to test that too.
> > > > >
> > > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > 4.8.4-301.fc25 without any issues. Could you post output of your
>
> failure?
> > > > > Paul
> > >
> > > You might have better luck with a more recent version of U-Boot. I'm
> > > running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> >
> > That made sense to me so I upgraded to the uboot that you are using but
>
> same problem.
>
> Do you have any extra peripherals added like a mPCIe card, camera or other
> such things or is it just the base board? What device do you have the rootfs
> on? eMMC, SD or SATA?
>
> I have mine running as a bare device with the OS on the eMMC, I think Paul
> might have the OS on a sata SSD. Just trying to work out what if any
> differences there are here as there's not much that can be different.

Thanks Peter!

Mine is yet another variation.  It is a bare board with the boot partition on an SD card and the root filesystem on an SSD.  I left the original eMMC untouched until I upgraded the uBoot.

The only thing other than the SDcard and the SSD is the serial console.

Just for kicks I tried an LPAE kernel and the first time I booted it got some kenel oops that I had not seen before but I was not logging the console output so I turned on capture and tried again but have not seen that kernel oops since.

For some reason my board is not seeing the sata controller (or not getting it initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.

Tim Krantz

[Peter Robinson]

> > > > > > > > Mine has as of yet failed to boot on any of them.
> > > > > > >
> > > > > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > > > > upgrading it to the latest now to test that too.
> > > > > >
> > > > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > 4.8.4-301.fc25 without any issues. Could you post output of your
> >
> > failure?
> > > > > > Paul
> > > >
> > > > You might have better luck with a more recent version of U-Boot. I'm
> > > > running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > >
> > > That made sense to me so I upgraded to the uboot that you are using but
> >
> > same problem.
> >
> > Do you have any extra peripherals added like a mPCIe card, camera or other
> > such things or is it just the base board? What device do you have the rootfs
> > on? eMMC, SD or SATA?
> >
> > I have mine running as a bare device with the OS on the eMMC, I think Paul
> > might have the OS on a sata SSD. Just trying to work out what if any
> > differences there are here as there's not much that can be different.
>
> Thanks Peter!
>
> Mine is yet another variation.  It is a bare board with the boot partition on an SD card and the root filesystem on an SSD.  I left the original eMMC untouched until I upgraded the uBoot.

The u-boot is on SPI nand not the eMMC so I suspect then you didn't
even touch it.
> The only thing other than the SDcard and the SSD is the serial console.
>
> Just for kicks I tried an LPAE kernel and the first time I booted it got some kenel oops that I had not seen before but I was not logging the console output so I turned on capture and tried again but have not seen that kernel oops since.
>
> For some reason my board is not seeing the sata controller (or not getting it initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.

Is it pulled into the initrd? Do you see the driver with a "lsinitrd |
grep ahci"
> Tim Krantz

[Timothy Krantz]

> -----Original Message-----
> From: Peter Robinson [mailto:[e-mail]]
> Sent: Monday, October 31, 2016 9:35 AM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> > > > > > > > > Mine has as of yet failed to boot on any of them.
> > > > > > > >
> > > > > > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > > > > > upgrading it to the latest now to test that too.
> > > > > > >
> > > > > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > > 4.8.4-301.fc25 without any issues. Could you post output of
> > > > > > > your
> > >
> > > failure?
> > > > > > >
> > > > > > > Paul
> > > > >
> > > > > You might have better luck with a more recent version of U-Boot.
> > > > > I'm running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > >
> > > > That made sense to me so I upgraded to the uboot that you are using
> > > > but
> > >
> > > same problem.
> > >
> > > Do you have any extra peripherals added like a mPCIe card, camera or
> > > other such things or is it just the base board? What device do you
> > > have the rootfs on? eMMC, SD or SATA?
> > >
> > > I have mine running as a bare device with the OS on the eMMC, I think
> > > Paul might have the OS on a sata SSD. Just trying to work out what if
> > > any differences there are here as there's not much that can be different.
> >
> > Thanks Peter!
> >
> > Mine is yet another variation.  It is a bare board with the boot partition on an
>
> SD card and the root filesystem on an SSD.  I left the original eMMC
> untouched until I upgraded the uBoot.
>
> The u-boot is on SPI nand not the eMMC so I suspect then you didn't even
> touch it.
> > The only thing other than the SDcard and the SSD is the serial console.
> >
> > Just for kicks I tried an LPAE kernel and the first time I booted it got some
>
> kenel oops that I had not seen before but I was not logging the console output
> so I turned on capture and tried again but have not seen that kernel oops
> since.
> > For some reason my board is not seeing the sata controller (or not getting it
>
> initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.
>
> Is it pulled into the initrd? Do you see the driver with a "lsinitrd | grep ahci"
> > Tim Krantz

Well when booting fails with 4.8.4-lape it finally drops into a Dracut command prompt with no lsinitrd

But all I see in to console logs is about a half dozen of :

tegra-ahci 70027000.sata: couldn't get PHY in node sata: -517

and that is the only reference to ahci

In a good boot on 4.6.7 I do see the driver loaded with lsinitrd | grep ahci.

Tim

[Peter Robinson]

> > > > > > > > > > Mine has as of yet failed to boot on any of them.
> > > > > > > > >
> > > > > > > > > Mine is currently running 4.8.1-1.fc25 without issues, just
> > > > > > > > > upgrading it to the latest now to test that too.
> > > > > > > >
> > > > > > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > > > 4.8.4-301.fc25 without any issues. Could you post output of
> > > > > > > > your
> > > >
> > > > failure?
> > > > > > > >
> > > > > > > > Paul
> > > > > >
> > > > > > You might have better luck with a more recent version of U-Boot.
> > > > > > I'm running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > > >
> > > > > That made sense to me so I upgraded to the uboot that you are using
> > > > > but
> > > >
> > > > same problem.
> > > >
> > > > Do you have any extra peripherals added like a mPCIe card, camera or
> > > > other such things or is it just the base board? What device do you
> > > > have the rootfs on? eMMC, SD or SATA?
> > > >
> > > > I have mine running as a bare device with the OS on the eMMC, I think
> > > > Paul might have the OS on a sata SSD. Just trying to work out what if
> > > > any differences there are here as there's not much that can be different.
> > >
> > > Thanks Peter!
> > >
> > > Mine is yet another variation.  It is a bare board with the boot partition on an
> >
> > SD card and the root filesystem on an SSD.  I left the original eMMC
> > untouched until I upgraded the uBoot.
> >
> > The u-boot is on SPI nand not the eMMC so I suspect then you didn't even
> > touch it.
> > > The only thing other than the SDcard and the SSD is the serial console.
> > >
> > > Just for kicks I tried an LPAE kernel and the first time I booted it got some
> >
> > kenel oops that I had not seen before but I was not logging the console output
> > so I turned on capture and tried again but have not seen that kernel oops
> > since.
> > > For some reason my board is not seeing the sata controller (or not getting it
> >
> > initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.
> >
> > Is it pulled into the initrd? Do you see the driver with a "lsinitrd | grep ahci"
> > > Tim Krantz
>
> Well when booting fails with 4.8.4-lape it finally drops into a Dracut command prompt with no lsinitrd

No, do it when booted against a 4.6.x kernel, you can specify the
actual initrd on the cmd line....
> But all I see in to console logs is about a half dozen of :
>
> tegra-ahci 70027000.sata: couldn't get PHY in node sata: -517

Looks like it's not getting either appropriate power to the controller
or some module deps are failing to be pulled into the initrd
correctly.
> and that is the only reference to ahci
>
> In a good boot on 4.6.7 I do see the driver loaded with lsinitrd | grep ahci.
>
> Tim

[Timothy Krantz]

> -----Original Message-----
> From: Peter Robinson [mailto:[e-mail]]
> Sent: Monday, October 31, 2016 10:50 AM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> > > > > > > > > > > Mine has as of yet failed to boot on any of them.
> > > > > > > > > >
> > > > > > > > > > Mine is currently running 4.8.1-1.fc25 without issues,
> > > > > > > > > > just upgrading it to the latest now to test that too.
> > > > > > > > >
> > > > > > > > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > > > > 4.8.4-301.fc25 without any issues. Could you post output of
> > > > > > > > > your
> > > > >
> > > > > failure?
> > > > > > > > >
> > > > > > > > > Paul
> > > > > > >
> > > > > > > You might have better luck with a more recent version of U-Boot.
> > > > > > > I'm running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > That made sense to me so I upgraded to the uboot that you are
> > > > > > using but
> > > > >
> > > > > same problem.
> > > > >
> > > > > Do you have any extra peripherals added like a mPCIe card, camera
> > > > > or other such things or is it just the base board? What device do
> > > > > you have the rootfs on? eMMC, SD or SATA?
> > > > >
> > > > > I have mine running as a bare device with the OS on the eMMC, I
> > > > > think Paul might have the OS on a sata SSD. Just trying to work
> > > > > out what if any differences there are here as there's not much that can
>
> be different.
> > > > >
> > > >
> > > > Thanks Peter!
> > > >
> > > > Mine is yet another variation.  It is a bare board with the boot
> > > > partition on an
> > >
> > > SD card and the root filesystem on an SSD.  I left the original eMMC
> > > untouched until I upgraded the uBoot.
> > >
> > > The u-boot is on SPI nand not the eMMC so I suspect then you didn't
> > > even touch it.
> > > > The only thing other than the SDcard and the SSD is the serial console.
> > > >
> > > > Just for kicks I tried an LPAE kernel and the first time I booted
> > > > it got some
> > >
> > > kenel oops that I had not seen before but I was not logging the
> > > console output so I turned on capture and tried again but have not
> > > seen that kernel oops since.
> > > > For some reason my board is not seeing the sata controller (or not
> > > > getting it
> > >
> > > initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.
> > >
> > > Is it pulled into the initrd? Do you see the driver with a "lsinitrd | grep
>
> ahci"
> > > > Tim Krantz
> >
> > Well when booting fails with 4.8.4-lape it finally drops into a Dracut
> > command prompt with no lsinitrd
>
> No, do it when booted against a 4.6.x kernel, you can specify the actual initrd
> on the cmd line....
> > But all I see in to console logs is about a half dozen of :
> >
> > tegra-ahci 70027000.sata: couldn't get PHY in node sata: -517
>
> Looks like it's not getting either appropriate power to the controller or some
> module deps are failing to be pulled into the initrd correctly.
> > and that is the only reference to ahci
> >
> > In a good boot on 4.6.7 I do see the driver loaded with lsinitrd | grep ahci.

I apologize for my ignorance.  I think what you are asking is if I run the 4.6.7 kernel with the 4.8.x initrd what do I see related to ahci.

I tried that and get the same issue of not seeing sata and eventually dropping into a Dracut command prompt.

Ihave been looking into how I can examine the uInitrd and saw something about stripping off the first 64 bytes, gunzipping it and mouting it as a loop device but have as yet been unable to get that work.

Tim

[Peter Robinson]

> > > > > > >> > > > > Mine has as of yet failed to boot on any of them.
> > > > > > >> > > >
> > > > > > >> > > > Mine is currently running 4.8.1-1.fc25 without issues,
> > > > > > >> > > > just upgrading it to the latest now to test that too.
> > > > > > >> > >
> > > > > > >> > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > >> > > 4.8.4-301.fc25 without any issues. Could you post output of
> > > > > > >> > > your
> > > > > > failure?
> > > > > > >> > >
> > > > > > >> > > Paul
> > > > > > >>
> > > > > > >> You might have better luck with a more recent version of U-Boot.
> > > > > > >> I'm running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > > > > >>
> > > > > > >>
> > > > > > >
> > > > > > > That made sense to me so I upgraded to the uboot that you are
> > > > > > > using but
> > > > > > same problem.
> > > > > >
> > > > > > Do you have any extra peripherals added like a mPCIe card, camera
> > > > > > or other such things or is it just the base board? What device do
> > > > > > you have the rootfs on? eMMC, SD or SATA?
> > > > > >
> > > > > > I have mine running as a bare device with the OS on the eMMC, I
> > > > > > think Paul might have the OS on a sata SSD. Just trying to work
> > > > > > out what if any differences there are here as there's not much that can
> >
> > be different.
> > > > > >
> > > > >
> > > > > Thanks Peter!
> > > > >
> > > > > Mine is yet another variation.  It is a bare board with the boot
> > > > > partition on an
> > > >
> > > > SD card and the root filesystem on an SSD.  I left the original eMMC
> > > > untouched until I upgraded the uBoot.
> > > >
> > > > The u-boot is on SPI nand not the eMMC so I suspect then you didn't
> > > > even touch it.
> > > > > The only thing other than the SDcard and the SSD is the serial console.
> > > > >
> > > > > Just for kicks I tried an LPAE kernel and the first time I booted
> > > > > it got some
> > > >
> > > > kenel oops that I had not seen before but I was not logging the
> > > > console output so I turned on capture and tried again but have not
> > > > seen that kernel oops since.
> > > > > For some reason my board is not seeing the sata controller (or not
> > > > > getting it
> > > >
> > > > initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.
> > > >
> > > > Is it pulled into the initrd? Do you see the driver with a "lsinitrd | grep
> >
> > ahci"
> > > > > Tim Krantz
> > >
> > > Well when booting fails with 4.8.4-lape it finally drops into a Dracut
> > > command prompt with no lsinitrd
> >
> > No, do it when booted against a 4.6.x kernel, you can specify the actual initrd
> > on the cmd line....
> > > But all I see in to console logs is about a half dozen of :
> > >
> > > tegra-ahci 70027000.sata: couldn't get PHY in node sata: -517
> >
> > Looks like it's not getting either appropriate power to the controller or some
> > module deps are failing to be pulled into the initrd correctly.
> > > and that is the only reference to ahci
> > >
> > > In a good boot on 4.6.7 I do see the driver loaded with lsinitrd | grep ahci.
>
> I apologize for my ignorance.  I think what you are asking is if I run the 4.6.7 kernel with the 4.8.x initrd what do I see related to ahci.

No, investigating the 4.8.x initrd while booted with a 4.6 kernel (IE
booted fully). See previous commands.
> I tried that and get the same issue of not seeing sata and eventually dropping into a Dracut command prompt.
>
> Ihave been looking into how I can examine the uInitrd and saw something about stripping off the first 64 bytes, gunzipping it and mouting it as a loop device but have as yet been unable to get that work.
>
> Tim

[Timothy Krantz]

> -----Original Message-----
> From: Peter Robinson [mailto:[e-mail]]
> Sent: Monday, October 31, 2016 1:06 PM
> To: Timothy Krantz 
> Cc: [e-mail]
> Subject: Re: [fedora-arm] Re: Jetson TK1 and kernel 4.8
> > > > > > > >> > > > > Mine has as of yet failed to boot on any of them.
> > > > > > > >> > > >
> > > > > > > >> > > > Mine is currently running 4.8.1-1.fc25 without issues,
> > > > > > > >> > > > just upgrading it to the latest now to test that too.
> > > > > > > >> > >
> > > > > > > >> > > Was running 4.8.2-300.fc25.armv7hl+lpae, upgraded to
> > > > > > > >> > > 4.8.4-301.fc25 without any issues. Could you post output
> > > > > > > >> > > of your
> > > > > > > failure?
> > > > > > > >> > >
> > > > > > > >> > > Paul
> > > > > > > >>
> > > > > > > >> You might have better luck with a more recent version of U-Boot.
> > > > > > > >> I'm running U-Boot 2016.11-rc2 with 4.8.4-301.fc25 on sata.
> > > > > > > >>
> > > > > > > >>
> > > > > > > >
> > > > > > > > That made sense to me so I upgraded to the uboot that you are
> > > > > > > > using but
> > > > > > > same problem.
> > > > > > >
> > > > > > > Do you have any extra peripherals added like a mPCIe card,
> > > > > > > camera or other such things or is it just the base board? What
> > > > > > > device do you have the rootfs on? eMMC, SD or SATA?
> > > > > > >
> > > > > > > I have mine running as a bare device with the OS on the eMMC, I
> > > > > > > think Paul might have the OS on a sata SSD. Just trying to work
> > > > > > > out what if any differences there are here as there's not much
> > > > > > > that can
> > >
> > > be different.
> > > > > > >
> > > > > >
> > > > > > Thanks Peter!
> > > > > >
> > > > > > Mine is yet another variation.  It is a bare board with the boot
> > > > > > partition on an
> > > > >
> > > > > SD card and the root filesystem on an SSD.  I left the original
> > > > > eMMC untouched until I upgraded the uBoot.
> > > > >
> > > > > The u-boot is on SPI nand not the eMMC so I suspect then you
> > > > > didn't even touch it.
> > > > > > The only thing other than the SDcard and the SSD is the serial console.
> > > > > >
> > > > > > Just for kicks I tried an LPAE kernel and the first time I
> > > > > > booted it got some
> > > > >
> > > > > kenel oops that I had not seen before but I was not logging the
> > > > > console output so I turned on capture and tried again but have not
> > > > > seen that kernel oops since.
> > > > > > For some reason my board is not seeing the sata controller (or
> > > > > > not getting it
> > > > >
> > > > > initialized properly) on 4.7 and 4.8 kernels but does on 4.6.7.
> > > > >
> > > > > Is it pulled into the initrd? Do you see the driver with a
> > > > > "lsinitrd | grep
> > >
> > > ahci"
> > > > > > Tim Krantz
> > > >
> > > > Well when booting fails with 4.8.4-lape it finally drops into a
> > > > Dracut command prompt with no lsinitrd
> > >
> > > No, do it when booted against a 4.6.x kernel, you can specify the
> > > actual initrd on the cmd line....
> > > > But all I see in to console logs is about a half dozen of :
> > > >
> > > > tegra-ahci 70027000.sata: couldn't get PHY in node sata: -517
> > >
> > > Looks like it's not getting either appropriate power to the
> > > controller or some module deps are failing to be pulled into the initrd
>
> correctly.
> > > > and that is the only reference to ahci
> > > >
> > > > In a good boot on 4.6.7 I do see the driver loaded with lsinitrd | grep
>
> ahci.
> > > >
> >
> > I apologize for my ignorance.  I think what you are asking is if I run the 4.6.7
>
> kernel with the 4.8.x initrd what do I see related to ahci.
>
> No, investigating the 4.8.x initrd while booted with a 4.6 kernel (IE booted
> fully). See previous commands.
> > I tried that and get the same issue of not seeing sata and eventually
>
> dropping into a Dracut command prompt.
> > Ihave been looking into how I can examine the uInitrd and saw something
>
> about stripping off the first 64 bytes, gunzipping it and mouting it as a loop
> device but have as yet been unable to get that work.
> >

I see 
-rw-r--r--   1 root     root         9631 Aug 25 12:07 usr/lib/modules/4.8.3-300.fc25.armv7hl/kernel/drivers/ata/ahci_tegra.ko

Tim