Trying to use Device Tree...and getting continuous interrupts from attached 88e1145
From: Morrison, Tom <hidden>
Date: 2007-08-03 22:54:14
All, Connected to eth1 (etsec2) of my mpc8548 cpu is a 88E1145 and I=20 am trying to get the core functionality running with the device tree paradigm - I know the sense of the 88E1145 is active-low for my=20 mpc8548 board and have it working with an older 2.6.11++ kernel. =20 I built this new kernel with the marvell driver - it seemingly=20 does all the same things we did in the 2.6.11 kernel in separate=20 spots... Here is the appropriate parts of my device tree for this part of the core...
quoted
mdio@24520 { #address-cells =3D <1>; #size-cells =3D <0>; device_type =3D "mdio"; compatible =3D "gianfar";=09 reg =3D <24520 20>; phy1: ethernet-phy@1 { interrupt-parent =3D <&mpic>; interrupts =3D <37 1>; reg =3D <11>; device_type =3D "ethernet-phy"; }; };=09 ethernet@25000 { #address-cells =3D <1>; #size-cells =3D <0>; device_type =3D "network"; model =3D "eTSEC"; compatible =3D "gianfar"; reg =3D <25000 1000>; local-mac-address =3D [ 00 00 00 00 00 00 ]; interrupts =3D <23 2 24 2 28 2>; interrupt-parent =3D <&mpic>; phy-handle =3D <&phy1>; }; mpic: pic@40000 { clock-frequency =3D <0>; interrupt-controller; #address-cells =3D <0>; #interrupt-cells =3D <2>; reg =3D <40000 40000>; built-in; compatible =3D "chrp,open-pic"; device_type =3D "open-pic"; big-endian; };
The device tree seems to be parsed OK:
quoted
of_irq_map_one: dev=3D/soc8548@e0000000/mdio@24520/ethernet-phy@1,
index=3D0
quoted
intsize=3D2 intlen=3D2 of_irq_map_raw: =
par=3D/soc8548@e0000000/pic@40000,intspec=3D[0x00000037
quoted
0x00000001...],ointsize=3D2 of_irq_map_raw: ipar=3D/soc8548@e0000000/pic@40000, size=3D2 mpic: xlate (2 cells: 0x00000037 0x00000001) to line 0x37 sense 0x8
Now, that looks OK! Those are what I would expect. And when the=20 mdio/phy are probed, configured, and the 88E1145 interrupt (EXT7=20 (0x37H)) is enabled, the interrupt never (seemingly) gets cleared, and basically hangs the entire box up and eventually it panics! I don't even have an external phy(SFP) connected to this 88e1148 phy.. I am at a lost - is there something I am missing in device tree?=20 Help mr. wizard (Kumar?)... Tom