Re: [PATCH v4 4/6] bus: ti-sysc: Add support for software reset

[Tony Lindgren]

* Faiz Abbas <faiz_abbas@xxxxxx> [180706 10:05]:
> Hi,
> 
> On Thursday 05 July 2018 09:17 PM, Tony Lindgren wrote:
> > * Faiz Abbas <faiz_abbas@xxxxxx> [180705 14:24]:
> >> +static int sysc_reset(struct sysc *ddata)
> >> +{
> >> +	int offset = ddata->offsets[SYSC_SYSCONFIG];
> >> +	int val = sysc_read(ddata, offset);
> > 
> > Can you please just warn and return early for now if no
> > syss_mask is specified? Otherwise we'll have mysterious
> > errors if somebody leaves out "ti,hwmods" for module types
> > we do not yet support reset for.
> 
> RESET write to sysconfig can still happen even if there's no syss_mask
> right? Not all modules need to poll on reset status.

It can but we currently don't have anything similar to
srst_udelay like we have in _ocp_softreset(). And we don't
currently have suport for sysc reset done bit.

So we want to warn and return error except in the known
working case for now.

Regards,

Tony