[PATCH v11 4/7] dt-bindings: sun6i-dsi: Add VCC-DSI supply property
mripard at kernel.org
Thu Oct 3 13:30:31 UTC 2019
On Thu, Oct 03, 2019 at 09:04:03PM +0800, Icenowy Zheng wrote:
> 于 2019年10月3日 GMT+08:00 下午7:47:33, Maxime Ripard <mripard at kernel.org> 写到:
> >On Thu, Oct 03, 2019 at 12:15:24PM +0530, Jagan Teki wrote:
> >> Allwinner MIPI DSI controllers are supplied with SoC DSI
> >> power rails via VCC-DSI pin.
> >> Some board still work without supplying this but give more
> >> faith on datasheet and hardware schematics and document this
> >> supply property in required property list.
> >> Reviewed-by: Rob Herring <robh at kernel.org>
> >> Tested-by: Merlijn Wajer <merlijn at wizzup.org>
> >> Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
> >> ---
> >> .../bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml | 3
> >> 1 file changed, 3 insertions(+)
> >> diff --git
> >> index 47950fced28d..9d4c25b104f6 100644
> >> ---
> >> +++
> >> @@ -36,6 +36,9 @@ properties:
> >> resets:
> >> maxItems: 1
> >> + vcc-dsi-supply:
> >> + description: VCC-DSI power supply of the DSI encoder
> >> +
> >The driver treats it as mandatory, so I've added it to the binding, as
> >suggested by the commit log.
> No. The regulator_get function will return dummy regulator, rather than
> fail, if the regulator is not specified.
Yes. And this deals nicely with the backward compatibility case. The
regulator is there on all the SoCs, so there's no reason to leave it
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