Subject: Re: [PATCH] powerpc: i2c-mpc: make speed registers configurable via FDT

From: Jochen Friedrich <[email-masked]>
Date: Fri, 25 Jul 2008 10:51:56 +0200

Hi Wolfgang,

> The I2C driver for the MPC currently uses a fixed speed hard-coded into
> the driver. This patch adds the FDT properties "fdr" and "dfsrr" for the
> corresponding I2C registers to make the speed configurable via FDT, 
> e.g.:
> 
>     i2c@3100 {
>         compatible = "fsl-i2c";
>         reg = <0x3100 0x100>;
>         interrupts = <43 2>;
>         interrupt-parent = <&mpic>;
>         dfsrr = <0x20>;
>         fdr = <0x03>;
>     };

Would it be possible to use the standard property "clock-frequency" for this
and calculate the register settings in the driver?

Thanks,
Jochen