[PATCH 3/4] thermal: rockchip: change the TSHUT default state

[Doug Anderson]

Caesar,

On Tue, Oct 20, 2015 at 6:47 PM, Caesar Wang <caesar.upstream at gmail.com> wrote:
> Doug,
>
> 在 2015年10月21日 00:01, Doug Anderson 写道:
>
> Caesar,
>
> On Tue, Oct 20, 2015 at 2:11 AM, Caesar Wang <wxt at rock-chips.com> wrote:
>
> As the TRM says, the TSHUT default state is high active.
> In general, the TSHUT state can get from the dts. Otherwise
> it gets the state from this.
>
> Can you point at where the TRM says that the default state is high active?
>
> With the manual I have, I look at TSADC_AUTO_CON and I look at the
> description of "Bit 8".  It says that "tshut polarity" is 0 for low
> active and 1 for high active.  It then said that the Reset Value is 0.
>
> ...the "Reset Value" in tables like this is notoriously unreliable, so
> I can totally believe that it's wrong.  If you can point me at the
> part of the TRM that says that TSHUT is high active by default then I
> can confirm that for you.  ;)
>
>
> Okay, I know that's my wrong, the polarity is high or low can be selected.
> :-(
>
> I remember the veyron why is the default HiGH active, since the opt is
> connected to the PMIC.(we need think about the devices)
>
> Why is the evb board LOW active, since the opt didn't connected to the
> devices. TSHUT is depend on the CRU to work.

I think we can drop this patch then, right?  Any boards that need a
change from the default can just set "rockchip,hw-tshut-polarity",
right?

-Doug