[U-Boot] [PATCH v7 00/15] SiFive FU540 Support

[Atish Patra]

On 4/18/19 12:15 PM, Kevin Hilman wrote:
> Palmer, Anup,
> 
> On Tue, Mar 12, 2019 at 1:55 AM Palmer Dabbelt <palmer at sifive.com> wrote:
>>
>> On Mon, 11 Mar 2019 07:33:25 PDT (-0700), bmeng.cn at gmail.com wrote:
>>> On Thu, Feb 14, 2019 at 7:58 AM Kevin Hilman <khilman at baylibre.com> wrote:
>>>>
>>>> Kevin Hilman <khilman at baylibre.com> writes:
>>>>
>>>>> Hi Anup,
>>>>>
>>>>> Anup Patel <Anup.Patel at wdc.com> writes:
>>>>>
>>>>>> This patchset adds SiFive Freedom Unleashed (FU540) support
>>>>>> to RISC-V U-Boot.
>>>>>>
>>>>>> The patches are based upon latest U-Boot source tree
>>>>>> (git://git.denx.de/u-boot.git) at commit id
>>>>>> dbe70c7d4e3d5c705a98d82952e05a591efd0683
>>>>>>
>>>>>> All drivers namely: SiFive PRCI, SiFive Serial, and Cadance
>>>>>> MACB Ethernet work fine on actual SiFive Unleashed board and
>>>>>> QEMU sifive_u machine.
>>>>>
>>>>> I tested u-boot networking (DHCP, TFTP) on my desk with a gigE switch
>>>>> and it worked fine.  Then, I moved it to a lab with a 100Mb switch,
>>>>> and DHCP doesn't work anymore.
>>>>
>>>> And to be clear, neither does TFTP if setting static
>>>> ipaddr/netmask/gatewayip etc.
>>>
>>> Sound to me a bug of the GEM driver on SiFive FU540 board.
>>
>> It looks to me like u-boot is missing a driver for the GEM clockmux in the
>> FU540.  This is necessary to switch between the clock for 1G operation and 100M
>> operation.  Without this you'll just get whatever clock was set up by the
>> previous boot stage (or even worse, reset).
> 
> Anyone know if this is fixed in u-boot yet?  I've yet to try the
> latest mainline u-boot, but will if if it's expected to work.
> 

I have not seen a GEM driver for FU540 board. So I guess it is not fixed 
it. Is it a blocker for setting up kernelCI for RISC-V ?

Regards,
Atish
> Kevin
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