NVMe support on RPi CM4 board

[Luis Alfredo da Silva]

Hi Simon, it took me some time to come back to this issue, but I was able
to enable the debug messages on drivers/nvme/nvme.c.

This is what I got when running the nvme scan command

U-Boot> pci
BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
_____________________________________________________________
00.00.00   0x14e4     0x2711     Bridge device           0x04
01.00.00   0x1c5c     0x174a     Mass storage controller 0x08
U-Boot> nvme info
U-Boot> nvme scan
Cannot set queue count (err=-110)
Unable to setup I/O queues(err=-110)
Failed to probe 'nvme#0': err=-110
U-Boot>

I'm reporting as soon as I got the messages, but I'll continue
investigating.

Regards,
Luis


El mié, 9 ago 2023 a las 20:15, Simon Glass (<sjg at google.com>) escribió:

> Hi Luis,
>
> On Wed, 9 Aug 2023 at 10:43, Luis Alfredo da Silva
> <luis.adasilvaf at gmail.com> wrote:
> >
> > Hi Simon, I enabled the next four variables
> >
> > CONFIG_NVME_PCI=y
> > CONFIG_NVME=y
> > CONFIG_CMD_NVME=y
> > CONFIG_PCI=y
> >
> > how different is CONFIG_NVME_PCI from NVME_PCI, I took the latter value
> from several configs files in u-boot repo and from [1]
>
> I just left off the CONFIG as they all have that. This looks right to
> me. Assuming that the NVMe controller appears in 'dm tree' perhaps you
> can enable debugging in the driver and see why it is not working?
>
> Regards,
> Simon
>
>
> >
> >
> > [1]
> https://github.com/u-boot/u-boot/blob/ef8336e2705fce2502383f25d68188c6b1f94dd0/doc/develop/driver-model/nvme.rst#L44
> >
> > El mar, 8 ago 2023 a las 22:05, Simon Glass (<sjg at google.com>) escribió:
> >>
> >> Hi Luis,
> >>
> >> On Tue, 8 Aug 2023 at 17:09, Luis Alfredo da Silva
> >> <luis.adasilvaf at gmail.com> wrote:
> >> >
> >> > I compiled u-boot version 2023-07 and boot it on a RPi CM4 using a
> PCIe M.2
> >> > NVMe drive, but it doesn't appear to be working.
> >> >
> >> > Once u-boot has started and boot successfully it recognizes the PCIe
> device
> >> > giving me the next output
> >> >
> >> > U-Boot> pci
> >> > BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
> >> > _____________________________________________________________
> >> > 00.00.00   0x14e4     0x2711     Bridge device           0x04
> >> > 01.00.00   0x1c5c     0x174a     Mass storage controller 0x08
> >> >
> >> > but when trying to use the nvme scan and nvme info there is not
> output.
> >> >
> >> > NVMe drive has two partitions 1st is a FAT partition, and 2nd is a
> EXT4
> >> > partition, the RPi firmware recognizes the FAT partition and u-boot
> boot
> >> > correctly.
> >> >
> >> > I don't know if this worked before, but I saw in the mailing list that
> >> > there could be already support for other ARM64 boards.
> >>
> >> Is NVME_PCI enabled?
> >>
> >> Regards,
> >> SImon
>