On Fri, 25 Nov 2022 12:36:28 +0000, Bryan O'Donoghue wrote:
> When converting from .txt to .yaml we didn't include descriptions for the
> existing regulator supplies.
>
> - vdd
> - vdda
> - vddio
>
> Add those descriptions into the yaml now as they were prior to the
> conversion. In the .txt description we marked these regulators as required,
> however, that requirement appears to have been in error.
>
> Taking the example of sc7180-trogdor-wormdingler.dtsi. The avdd and avee
> come from GPIO controlled external regulators, not the SoC and in this case
> there's no need for vddio to power an I/O bus. Similarly the regulators for
> the LCD are controlled by the panel driver not by the dsi-ctrl driver.
>
> It would be possible to connect a different type of panel to the DSI bus
> here in which case we may or may not want to make use of vdd, vdda or
> vddio.
>
> This is also the case for older chipsets like apq8064, msm8916 etc the vdd*
> regulators in the dsi-ctrl block are helpers not dependencies.
>
> Add the description of vdd, vdda and vddio back in for the existing
> upstream dts where vdd, vdda or vddio are already declared but, don't
> declare those regulators required - they are not SoC requirements.
>
> Fixes: 4dbe55c97741 ("dt-bindings: msm: dsi: add yaml schemas for DSI bindings")
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
> ---
> .../bindings/display/msm/dsi-controller-main.yaml | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
