NVMe support on RPi CM4 board

[Simon Glass]

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