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

[Kevin Hilman]

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.

Kevin