Messages in this thread | | | From | Baruch Siach <> | Subject | Re: [PATCH] ARM: dts: imx6dl: SolidRun: add phy node with 100Mb/s max-speed | Date | Sun, 15 Sep 2019 09:30:00 +0300 |
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Hi Andrew,
On Tue, Sep 10 2019, Andrew Lunn wrote: > On Tue, Sep 10, 2019 at 06:55:07PM +0300, tinywrkb wrote: >> Cubox-i Solo/DualLite carrier board has 100Mb/s magnetics while the >> Atheros AR8035 PHY on the MicroSoM v1.3 CPU module is a 1GbE PHY device. >> >> Since commit 5502b218e001 ("net: phy: use phy_resolve_aneg_linkmode in >> genphy_read_status") ethernet is broken on Cubox-i Solo/DualLite devices. > > Hi Tinywrkb > > You emailed lots of people, but missed the PHY maintainers :-( > > Are you sure this is the patch which broken it? Did you do a git > bisect.
Tinywrkb confirmed to me in private communication that revert of 5502b218e001 fixes Ethernet for him on effected system.
He also referred me to an old Cubox-i spec that lists 10/100 Ethernet only for i.MX6 Solo/DualLite variants of Cubox-i. It turns out that there was a plan to use a different 10/100 PHY for Solo/DualLite SOMs. This plan never materialized. All SolidRun i.MX6 SOMs use the same AR8035 PHY that supports 1Gb.
Commit 5502b218e001 might be triggering a hardware issue on the affected Cubox-i. I could not reproduce the issue here with Cubox-i and a Dual SOM variant running v5.3-rc8. I have no Solo/DualLite variant handy at the moment.
baruch
-- http://baruch.siach.name/blog/ ~. .~ Tk Open Systems =}------------------------------------------------ooO--U--Ooo------------{= - baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
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