Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on

[Fabio Estevam]

Hi Anson,

On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang <anson.huang@xxxxxxx> wrote:

> It is NOT easy to identify which switch is critical or NOT, and different platforms
> have different board design, it will introduce many platform specified code, so I think
> just revert the pfuze100 switch enable/disable patch should be OK for now.

I have sent the pfuze100 regulator patch revert and it is linux-next
now. Should probably reach 4.18-rc4.

> After a couple of release cycles, add the pfuze100 switch enable/disable patch
> back to support this feature, I believe users should switch to new dtb with "regulator-always-on"
> existing already.

That will still break old dtb compatibility.

You cannot force users to use "regulator-always-on" and the old dtbs
need to always work.

So whatever new feature you need to introduce it needs to be done in
such a way that the existing dtb's will continue working.