On 6/9/08, Juergen Beisert <[EMAIL PROTECTED]> wrote: > On Monday 09 June 2008 01:28, Grant Likely wrote: > > On Sun, Jun 8, 2008 at 1:08 PM, Jon Smirl <[EMAIL PROTECTED]> wrote: > > > Why not a compatible field in the top of the tree? Then you wouldn't > > > need to list the boards in mpc5200_simple.c. > > > compatible = "phytec,pcm030","simple-mpc5200"; > > > > Here's the problem; what does compatible really mean at the board > > level? Does it mean the board has 100% of the same capabilities? > > Does it mean that it uses the same chip? Does it mean that the chip > > is configured in a particular way? It is really hard to define what a > > compatible value means at the board level. The meaning of compatible > > at the device level is very well defined, but that meaning does not > > extend well to the board level. > > > > Therefore, it is best to be conservative here and require a specific > > list of supported boards in platform code. > > > > Besides, it is really a Linux specific thing that is trying to be > > described. In Linux, we've decided to support as many 5200 boards as > > possible using the same platform code, but that may not be true, or it > > may be a different set of boards, when a different OS is used. To > > attempt to encode those decisions is overreaching the intent of using > > the device tree. > > > > > Device tree has an entry for AC97 on PSC1. I don't think the Phytec > > > module or carrier board has AC97 hardware. > > > > Might be a bug > > > NACK. The baseboard for the pcm030 CPU board has AC97 hardware connected to > PSC1. And it plays audio... > > > > > The RTC chip says pcf8563, phytec doc says it is a pcf8564. > > > > Sounds like a bug > > > These devices are mostly the same. You can use the pcf8563 driver for the > pcf8564.
Let's put the right chip number in the tree. While these have the same drivers on Linux they may not on other OSes. > > > > > There should be an i2c entry for the eeprom but I don't know the part > > > number for it. > > > > Yes, i2c devices should be described. > > > Its a 24C32. > > I believe Wolfram has a newer OFtree for the pcm030 so I add him as CC. > > Regards, > Juergen > > > -- > Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de > Pengutronix - Linux Solutions for Science and Industry > Handelsregister: Amtsgericht Hildesheim, HRA 2686 > Vertretung Sued/Muenchen, Germany > Phone: +49-8766-939 228 | Fax: +49-5121-206917-9 > -- Jon Smirl [EMAIL PROTECTED] _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
