svn commit: r362736 - head/sys/arm64/rockchip

[Peter Jeremy]

On 2020-Jul-02 17:26:23 -0700, Oleksandr Tymoshenko <gonzo at freebsd.org> wrote:
>Could you try kernel with this patch? It's mostly debug output,
>with one possible clock-related fix.
>
>https://people.freebsd.org/~gonzo/patches/rk3328-gmac-debug.patch

It's still not working for me.  I get the following:
dwc0: <Rockchip Gigabit Ethernet Controller> mem 0xff540000-0xff54ffff irq 44 on ofwbus0
setting RK3328 RX/TX delays:  24/36
>>> RK3328_GRF_MAC_CON1 (00000413):
>>>     gmac2io_gmii_clk_sel: 0x0
>>>     gmac2io_rmii_extclk_sel: 0x1
>>>     gmac2io_rmii_mode: 0x0
>>>     gmac2io_rmii_clk_sel: 0x0
>>>     gmac2io_phy_intf_sel: 0x1
>>>     gmac2io_flowctrl: 0x0
>>>     gmac2io_rxclk_dly_ena: 0x1
>>>     gmac2io_txclk_dly_ena: 0x1
>>> RK3328_GRF_MAC_CON0 (00000c24):
miibus0: <MII bus> on dwc0
rgephy0: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 0 on miibus0
rgephy0: OUI 0x00e04c, model 0x0011, rev. 6
rgephy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, 1000baseT-FDX-master, auto

>I have Rock64 v2, which, as you mentioned, has a known issue with GigE, so
>my tests are not reliable. I'll try to get another RK3328 board for tests,
>but it may take some time.

I've asked on -arm if anyone else has tried this on a Rock64 v2 or v3.

>If the clock fix doesn't help, I'll make
>delays configuration run-time configurable with off by default until
>more hardware is tested.

That sounds like a good way forward - maybe boot and run-time configurable.
It's a pity that there doesn't seem to be any documentation on what the
numbers represent (or what the "default" value is) - which means that
actually adjusting the delay numbers would be very time consuming.

-- 
Peter Jeremy
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