Hi Keerthy,
On Tue, 4 Jun 2019 at 14:01, Keerthy <j-keer...@ti.com> wrote:
>
> Hi Simon/Tom,
>
> I am looking at the device_probe function in drivers/core/device.c
>
> ret = uclass_pre_probe_device(dev);
> if (ret)
> goto fail;
>
> if (dev->parent && dev->parent->driver->child_pre_probe) {
> ret = dev->parent->driver->child_pre_probe(dev);
> if (ret)
> goto fail;
> }
>
> if (drv->ofdata_to_platdata && dev_has_of_node(dev)) {
> ret = drv->ofdata_to_platdata(dev);
> if (ret)
> goto fail;
> }
>
> /* Process 'assigned-{clocks/clock-parents/clock-rates}'
> properties */
> ret = clk_set_defaults(dev);
>
> In case of a device like MPU we would like setup voltage before setting
> the clocks and i was looking if we can have a pre_probe for a driver
> to do things before driver gets probed. Neither uclass_pre_probe_device
> nor dev->parent->driver->child_pre_probe benefit me in this case.
>
> Does my situation warrant adding a new hook to struct driver? Or are
> there instances of such handling already in u-boot.
For now, is it enough to probe the power driver from the clock driver?
Regards,
Simon
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