Hi all,I have a question about the definition of the localbus on the Freescale 5200B (I'm testing with the Lite5200B board) with Kernel 2.6.29.1 which I could not figure out with the docs and the list archives...
When I use 'compatible = "fsl,mpc5200b-lpb";' in the dts file, the localbus and any nodes below it don't show up in /sys/devices.
When I use the following (top-level, not under the soc node) in the dts file
<snip> localbus { compatible = "fsl,lpb"; #address-cells = <2>; #size-cells = <1>; reg = <0xf0000300 0x32>; ranges = < 0 0 0xfc000000 0x02000000 3 0 0xf0020000 0x00010000 >; fl...@0,0 { compatible = "cfi-flash"; reg = <0 0x0 0x2000000>; // 32 MBbank-width = <1>; // width in bytes of the flash bank device-width = <1>; // one devices on each bank
#size-cells = <1>; #address-cells = <1>; }; my...@3,0 { compatible = "mydev"; reg = <0 0x0 0x100>; // 256 Bytes, 32 used interrupts = <1 3 2>; // todo - level? interrupt-parent = <&mpc5200_pic>; }; }; </snip> I see in /sys/devices <snip> # ls -al /sys/devices/ drwxr-xr-x 7 0 0 0 Jan 1 00:00 . drwxr-xr-x 11 0 0 0 Jan 1 00:00 .. drwxr-xr-x 31 0 0 0 Jan 1 00:00 f0000000.soc5200drwxr-xr-x 4 0 0 0 Jan 1 00:00 f0000300.localbus
drwxr-xr-x 2 0 0 0 Jan 1 00:00 platform drwxr-xr-x 5 0 0 0 Jan 1 00:00 system drwxr-xr-x 8 0 0 0 Jan 1 00:00 virtual </snip>Does this mean that the documentation (and some existing dts files) are inaccurate? What is the proper way to specify the localbus (or, in particular, it's child nodes) on the 5200B?
In /sys/devices/f0000300.localbus, I see <snip> # ls -al /sys/devices/f0000300.localbus/ drwxr-xr-x 4 0 0 0 Jan 1 00:00 . drwxr-xr-x 7 0 0 0 Jan 1 00:00 .. -r--r--r-- 1 0 0 4096 Jan 1 00:00 devspec drwxr-xr-x 2 0 0 0 Jan 1 00:00 fc000000.flash drwxr-xr-x 2 0 0 0 Jan 1 00:00 fc000000.mydev -r--r--r-- 1 0 0 4096 Jan 1 00:00 modalias -r--r--r-- 1 0 0 4096 Jan 1 00:00 namelrwxrwxrwx 1 0 0 0 Jan 1 00:00 subsystem -> ../../bus/of_platform
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 uevent </snip>which is also confusing, as both devices appear to have the same address? Any idea what goes wrong here?
The flash device itself (mydev isn't present yet...) also doesn't work although mtd is enabled, but that's probably a different problem.
Any help would be really welcome! Thanks in advance, Albrecht.
pgpP00KTgQBWJ.pgp
Description: PGP signature
_______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev