Thread (38 messages) 38 messages, 7 authors, 2020-01-14

Re: [PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation

From: Mark Brown <broonie@kernel.org>
Date: 2020-01-14 15:43:27
Also in: linux-aspeed, linux-devicetree, linux-gpio, lkml

On Tue, Jan 07, 2020 at 02:38:11PM +0100, Marco Felsch wrote:
On 20-01-07 13:09, Mark Brown wrote:
quoted
On Tue, Jan 07, 2020 at 09:36:54AM +0100, Marco Felsch wrote:
quoted
quoted
The input signal is routed trough the da9062 gpio block to the
regualtors. You can't set any voltage value using a gpio instead you
decide which voltage setting is applied. The voltage values for
runtime/suspend comes from the dt-data. No it's not just a fast
switching option imagine the system suspend case where the cpu and soc
voltage can be reduced to a very low value. Older soc's like the imx6
signaling this state by a hard wired gpio line because the soc and
cpu cores don't work properly on such low voltage values. This is
my use case and I can't use the sequencer.
quoted
My point is that I can't tell any of this from the description.
Therefore I want to discuss the dt-binding documentation with you and
the others to get this done. Is the above description better to
understand the dt-binding?
That text really doesn't feel like text that'd be idiomatic
directly in a binding document but some of those ideas probably
do need to be in the text I think.
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