Hi all, On PPC4xx are not currently supported interrupts from external PHY. It's OK on all CPUs instead of IBM PPC440. The CPU has internal ZMII bridge where must be set the current link speed (Speed Selection Register - ZMII0_SSR). The current interruptless implementation fails in the following cases: - Linux starts without ethernet connection with default 10MB speed. When you will try connect 100MB link it fails - reconection between 100 and 10 MB connection
The attached patch uses the interrpts from PHY to detect link change and sets apporiate speed in the Speed Selection Register and reports link change to console. The patch was tested with the IBM evaluation Ebony board. regards -- Pavel Bartusek <pba at sysgo.de> Software Engineering SYSGO Real-Time Solutions AG | Embedded and Real-Time Software Lise-Meitner-Str.15 89081 Ulm, Germany Voice: +49-731-9533-1295 FAX: +49-731-94683-10 www.sysgo.de | www.elinos.com | www.osek.de -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: ppc4xx_phy_int.patch Url: http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20031218/71a7c187/attachment.txt
