On 4/18/19 12:15 PM, Kevin Hilman wrote:
Palmer, Anup,
On Tue, Mar 12, 2019 at 1:55 AM Palmer Dabbelt <[email protected]> wrote:
On Mon, 11 Mar 2019 07:33:25 PDT (-0700), [email protected] wrote:
On Thu, Feb 14, 2019 at 7:58 AM Kevin Hilman <[email protected]> wrote:
Kevin Hilman <[email protected]> writes:
Hi Anup,
Anup Patel <[email protected]> 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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