On Sat, Sep 15, 2007 at 11:08:01AM +0200, Stefan Roese wrote:
> This patch reworks existing ibm-iic driver to an of_platform_device
> and enables it to talk to device tree directly. The ocp quirks are
> completely removed by this patch.
>
> This is done to enable I2C support for the PPC4xx platforms now
> being moved from arch/ppc (ocp) to arch/powerpc (of). The first board
> using this driver will be the AMCC Sequoia (PPC440EPx).
>
> Signed-off-by: Stefan Roese <[EMAIL PROTECTED]>
>
> + /* clckdiv is the same for *all* IIC interfaces,
> + * but I'd rather make a copy than introduce another global. --ebs
> + */
> + /* Parent bus should have frequency filled */
> + prop = of_get_property(of_get_parent(np), "clock-frequency", &len);
> + if (prop == NULL) {
> + printk(KERN_ERR
> + "ibm-iic(%s):no clock-frequency prop on parent bus!\n",
> + dev->np->full_name);
> + goto fail;
> + }
> +
> + DBG("%s: clckdiv = %d\n", dev->np->full_name, dev->clckdiv);
> +
Where is dev->clkdiv initialized?
My original version used iic_clkdiv() to calculate correct devider
based on OPB frequency. Did you even test this code?
--
Eugene
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