On Thu, 27 Nov 2008, Andre Schwarz wrote: > Timur Tabi schrieb: >> On Thu, Nov 27, 2008 at 9:00 AM, Andre Schwarz >> <[EMAIL PROTECTED]> wrote: >> >>> All, >>> >>> is anybody working on some improvements regarding configurable I2C >>> frequency inside the i2c-mpc driver ? >>> >>> If not - would anybody be intersted in getting this done, i.e. >>> configurable via device tree ? >>> >> >> Maybe I'm missing something, but U-Boot configures the I2C bus speed. >> It does this because the algorithm is specific to the SOC itself. For >> example, the 8544 is different from the 8548. It would be a mess to >> duplicate this code in the kernel. >> >> > You're right regarding U-Boot, but the i2c-mpc driver overwrites the > "frequency divider register" on all chips. > > I'm not happy with a fixed 0x3f @ MPC5200 which results in 65kHz ... :-( > > Have a look at line 163 in drivers/i2c/busses/i2c-mpc.c
Seems like it should keep the clock registers at what u-boot set them too. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev