TE720-03-1CF + TE0705. MDIO and RTC question

[mgillott]

Hi

Just experimenting with my new TE720. Noted two things when it boots from its internal Petalinux 2015.4 OS

MDIO - is this normal startup ?

Code Select Expand

libphy: MACB_mii_bus: probed
mdio_bus e000b000.etherne: /amba/ethernet@e000b000/mdio has invalid PHY address
mdio_bus e000b000.etherne: scan phy mdio at address 0
mdio_bus e000b000.etherne: scan phy mdio at address 1
mdio_bus e000b000.etherne: scan phy mdio at address 2
mdio_bus e000b000.etherne: scan phy mdio at address 3
mdio_bus e000b000.etherne: scan phy mdio at address 4
mdio_bus e000b000.etherne: scan phy mdio at address 5
mdio_bus e000b000.etherne: scan phy mdio at address 6
mdio_bus e000b000.etherne: scan phy mdio at address 7
mdio_bus e000b000.etherne: scan phy mdio at address 8
mdio_bus e000b000.etherne: scan phy mdio at address 9
mdio_bus e000b000.etherne: scan phy mdio at address 10
mdio_bus e000b000.etherne: scan phy mdio at address 11
mdio_bus e000b000.etherne: scan phy mdio at address 12
mdio_bus e000b000.etherne: scan phy mdio at address 13
mdio_bus e000b000.etherne: scan phy mdio at address 14
mdio_bus e000b000.etherne: scan phy mdio at address 15
mdio_bus e000b000.etherne: scan phy mdio at address 16
mdio_bus e000b000.etherne: scan phy mdio at address 17
mdio_bus e000b000.etherne: scan phy mdio at address 18
mdio_bus e000b000.etherne: scan phy mdio at address 19
mdio_bus e000b000.etherne: scan phy mdio at address 20
mdio_bus e000b000.etherne: scan phy mdio at address 21
mdio_bus e000b000.etherne: scan phy mdio at address 22
mdio_bus e000b000.etherne: scan phy mdio at address 23
mdio_bus e000b000.etherne: scan phy mdio at address 24
mdio_bus e000b000.etherne: scan phy mdio at address 25
mdio_bus e000b000.etherne: scan phy mdio at address 26
mdio_bus e000b000.etherne: scan phy mdio at address 27
mdio_bus e000b000.etherne: scan phy mdio at address 28
mdio_bus e000b000.etherne: scan phy mdio at address 29
mdio_bus e000b000.etherne: scan phy mdio at address 30
mdio_bus e000b000.etherne: scan phy mdio at address 31
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 150 (00:0a:35:00:1e:53)
macb e000b000.ethernet eth0: attached PHY driver [Marvell 88E1510] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)


RTC
seems to clear RTC every reboot. Is that expected ?

Code Select Expand

rtc-isl12022 1-006f: setting system clock to 2000-01-01 00:00:00 UTC (946684800)


Thanks in advance
Malcolm Gillott

[Antti Lukats]

MDIO, this is "linux issue" depending on linux kernel version those messages appear. The PHY address 0 is treated as invalid, this is not an fatal error, it only causes extra printout during bootup.

RTC if the battery voltage is not supplied then the RTC is started again always.

[mgillott]

Antti

Thanks for the fast answers!

Malcolm

[JH]

Hi,

we have also a Vivado 2016.2 reference design available on our download page: https://shop.trenz-electronic.de/en/Download/?path=Trenz_Electronic/TE0720/Reference_Design/2016.2/test_board
This include also a Petalinux 2016.2 template project in the subfolder /os/petalinux.
See also: https://wiki.trenz-electronic.de/display/PD/PetaLinux+KICKstart#PetaLinuxKICKstart-CreatingaProjectfromVivadoProject

br
John