[PATCH v11 2/6] dt-bindings: display: mediatek: control dpi pins mode to avoid leakage

Jitao Shi
2020-02-28T08:16:08Z

Add property "pinctrl-names" to swap pin mode between gpio and dpi mode. Set
the dpi pins to gpio mode and output-low to avoid leakage current when dpi
disabled.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.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..77ca32a32399 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@1401d000 {
@@ -27,6 +31,9 @@ dpi0: dpi@1401d000 {
<&mmsys CLK_MM_DPI_ENGINE>,
<&apmixedsys CLK_APMIXED_TVDPLL>;
clock-names = "pixel", "engine", "pll";
+ pinctrl-names = "active", "idle";
+ pinctrl-0 = <&dpi_pin_func>;
+ pinctrl-1 = <&dpi_pin_idle>;

port {
dpi0_out: endpoint {
--
2.21.0