[PATCH RESEND RESEND] thermal/of: support thermal zones w/o trips subnode

[Mark Brown]

On Sat, Jul 22, 2023 at 08:25:34PM +0800, Icenowy Zheng wrote:
> From: Icenowy Zheng <uwu at icenowy.me>
> 
> Although the current device tree binding of thermal zones require the
> trips subnode, the binding in kernel v5.15 does not require it, and many
> device trees shipped with the kernel, for example,
> allwinner/sun50i-a64.dtsi and mediatek/mt8183-kukui.dtsi in ARM64, still
> comply to the old binding and contain no trips subnode.
> 
> Allow the code to successfully register thermal zones w/o trips subnode
> for DT binding compatibility now.
> 
> Furtherly, the inconsistency between DTs and bindings should be resolved
> by either adding empty trips subnode or dropping the trips subnode
> requirement.

This makes sense to me - it allows people to see the reported
temperature even if there's no trips defined which seems more
helpful than refusing to register.

Reviewed-by: Mark Brown <broonie at kernel.org>
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