On Mon, Jun 19, 2017 at 11:48:05AM +0200, Ulf Hansson wrote:
> [...]
>
> >> >
> >> > Unlike the MMC design, there is no dts entry to indicate whether this
> >> > device needs pwrseq or not at this design, it will only carry out power
> >> > on sequence after matching. So, return -EPROBE_DEFER may
[...]
>> >
>> > Unlike the MMC design, there is no dts entry to indicate whether this
>> > device needs pwrseq or not at this design, it will only carry out power
>> > on sequence after matching. So, return -EPROBE_DEFER may not work since
>> > this device may never need pwrseq.
>>
>> Then, how wi
On Mon, Jun 19, 2017 at 10:09:58AM +0200, Ulf Hansson wrote:
> On 15 June 2017 at 12:06, Peter Chen wrote:
> > On Thu, Jun 15, 2017 at 11:35:20AM +0200, Ulf Hansson wrote:
> >> On 15 June 2017 at 11:11, Peter Chen wrote:
> >> > On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
> >> >>
On 15 June 2017 at 12:06, Peter Chen wrote:
> On Thu, Jun 15, 2017 at 11:35:20AM +0200, Ulf Hansson wrote:
>> On 15 June 2017 at 11:11, Peter Chen wrote:
>> > On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
>> >> > Yes, you are right. This is the limitation for this power sequence
>>
On Thu, Jun 15, 2017 at 06:06:04PM +0800, Peter Chen wrote:
> On Thu, Jun 15, 2017 at 11:35:20AM +0200, Ulf Hansson wrote:
> > On 15 June 2017 at 11:11, Peter Chen wrote:
> > > On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
> > >> > Yes, you are right. This is the limitation for this
On Thu, Jun 15, 2017 at 11:35:20AM +0200, Ulf Hansson wrote:
> On 15 June 2017 at 11:11, Peter Chen wrote:
> > On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
> >> > Yes, you are right. This is the limitation for this power sequence
> >> > library, the registration for the 1st power s
On 15 June 2017 at 11:11, Peter Chen wrote:
> On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
>> > Yes, you are right. This is the limitation for this power sequence
>> > library, the registration for the 1st power sequence instance must
>> > be finished before device driver uses it.
On Thu, Jun 15, 2017 at 10:11:45AM +0200, Ulf Hansson wrote:
> > Yes, you are right. This is the limitation for this power sequence
> > library, the registration for the 1st power sequence instance must
> > be finished before device driver uses it. I am appreciated that
> > you can supply some sugg
On 15 June 2017 at 08:58, Peter Chen wrote:
> On Wed, Jun 14, 2017 at 10:53:29AM +0200, Ulf Hansson wrote:
>> On 14 June 2017 at 03:53, Peter Chen wrote:
>> > On Tue, Jun 13, 2017 at 12:24:42PM +0200, Ulf Hansson wrote:
>> >> [...]
>> >>
>> >> > +
>> >> > +/**
>> >> > + * of_pwrseq_on - Carry out
On Wed, Jun 14, 2017 at 10:53:29AM +0200, Ulf Hansson wrote:
> On 14 June 2017 at 03:53, Peter Chen wrote:
> > On Tue, Jun 13, 2017 at 12:24:42PM +0200, Ulf Hansson wrote:
> >> [...]
> >>
> >> > +
> >> > +/**
> >> > + * of_pwrseq_on - Carry out power sequence on for device node
> >> > + *
> >> > +
On 14 June 2017 at 03:53, Peter Chen wrote:
> On Tue, Jun 13, 2017 at 12:24:42PM +0200, Ulf Hansson wrote:
>> [...]
>>
>> > +
>> > +/**
>> > + * of_pwrseq_on - Carry out power sequence on for device node
>> > + *
>> > + * @np: the device node would like to power on
>> > + *
>> > + * Carry out a si
On Tue, Jun 13, 2017 at 12:24:42PM +0200, Ulf Hansson wrote:
> [...]
>
> > +
> > +/**
> > + * of_pwrseq_on - Carry out power sequence on for device node
> > + *
> > + * @np: the device node would like to power on
> > + *
> > + * Carry out a single device power on. If multiple devices
> > + * need
[...]
> +
> +/**
> + * of_pwrseq_on - Carry out power sequence on for device node
> + *
> + * @np: the device node would like to power on
> + *
> + * Carry out a single device power on. If multiple devices
> + * need to be handled, use of_pwrseq_on_list() instead.
> + *
> + * Return a pointer to
We have an well-known problem that the device needs to do some power
sequence before it can be recognized by related host, the typical
example like hard-wired mmc devices and usb devices.
This power sequence is hard to be described at device tree and handled by
related host driver, so we have crea
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