Hi,
On Thu, Aug 19, 2021 at 2:31 AM yangcong
<[email protected]> wrote:
>
> The auo,b101uan08.3 panel (already supported by this driver) has
> a 3.3V rail that needs to be turned on. For previous users of
> this panel this voltage was directly output by pmic. On a new
> user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
> to turn the 3.3V rail on.
>
> Signed-off-by: yangcong <[email protected]>
>
> ---
> .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> index 38bc1d1b511e..e45de7a4360e 100644
> --- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> @@ -36,6 +36,9 @@ properties:
> pp1800-supply:
> description: core voltage supply
>
> + pp3300-supply:
> + description: core voltage supply
> +
> avdd-supply:
> description: phandle of the regulator that provides positive voltage
>
> @@ -52,6 +55,7 @@ required:
> - reg
> - enable-gpios
> - pp1800-supply
> + - pp3300-supply
Please send a v2 _without_ this line. Old device trees that don't
specify the 3.3V rail need to keep working fine and thus it's optional
(not required) for people to include the 3.3 V rail.
(NOTE: in the source code things will work fine without any changes
because the regulator framework will automatically create a "dummy"
regulator for you if one wasn't specified in the device tree).
-Doug