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Date: Wed, 26 Feb 2020 09:54:05 +0800 From: CK Hu <ck.hu@...iatek.com> To: Jitao Shi <jitao.shi@...iatek.com> CC: Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, Matthias Brugger <matthias.bgg@...il.com>, Daniel Vetter <daniel@...ll.ch>, David Airlie <airlied@...ux.ie>, <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <srv_heupstream@...iatek.com>, <yingjoe.chen@...iatek.com>, <eddie.huang@...iatek.com>, <cawa.cheng@...iatek.com>, <bibby.hsieh@...iatek.com>, <stonea168@....com>, <huijuan.xie@...iatek.com> Subject: Re: [PATCH v8 3/7] dt-bindings: display: mediatek: control dpi pins mode to avoid leakage On Tue, 2020-02-25 at 17:40 +0800, Jitao Shi wrote: > Add property "pinctrl-names" to swap pin mode between gpio and dpi mode. Set > pin mode to gpio oupput-low to avoid leakage current when dpi disable. > Reviewed-by: CK Hu <ck.hu@...iatek.com> > Signed-off-by: Jitao Shi <jitao.shi@...iatek.com> > --- > .../devicetree/bindings/display/mediatek/mediatek,dpi.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt > index 58914cf681b8..a7b1b8bfb65e 100644 > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt > @@ -17,6 +17,10 @@ Required properties: > Documentation/devicetree/bindings/graph.txt. This port should be connected > to the input port of an attached HDMI or LVDS encoder chip. > > +Optional properties: > +- pinctrl-names: Contain "gpiomode" and "dpimode". > + pinctrl-names see Documentation/devicetree/bindings/pinctrlpinctrl-bindings.txt > + > Example: > > dpi0: dpi@...1d000 { > @@ -27,6 +31,9 @@ dpi0: dpi@...1d000 { > <&mmsys CLK_MM_DPI_ENGINE>, > <&apmixedsys CLK_APMIXED_TVDPLL>; > clock-names = "pixel", "engine", "pll"; > + pinctrl-names = "gpiomode", "dpimode"; > + pinctrl-0 = <&dpi_pin_gpio>; > + pinctrl-1 = <&dpi_pin_func>; > > port { > dpi0_out: endpoint {
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