Messages in this thread | | | Date | Thu, 03 Oct 2019 21:04:03 +0800 | Subject | Re: [PATCH v11 4/7] dt-bindings: sun6i-dsi: Add VCC-DSI supply property | From | Icenowy Zheng <> |
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于 2019年10月3日 GMT+08:00 下午7:47:33, Maxime Ripard <mripard@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@kernel.org> >> Tested-by: Merlijn Wajer <merlijn@wizzup.org> >> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> >> --- >> .../bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml | 3 >+++ >> 1 file changed, 3 insertions(+) >> >> diff --git >a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml >b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml >> index 47950fced28d..9d4c25b104f6 100644 >> --- >a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml >> +++ >b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml >> @@ -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.
> >Maxime
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