diff mbox series

[RFC,v2,3/3,DNI] arm64: dts: mba8mx: Use gpio-delay for LVDS bridge

Message ID 20221214095342.937303-4-alexander.stein@ew.tq-group.com
State New
Headers show
Series gpio: Add gpio-delay support | expand

Commit Message

Alexander Stein Dec. 14, 2022, 9:53 a.m. UTC 
Add a gpio-delay for LVDS_BRIDGE_EN_1V8 which ramp-up time is defined
by the external RC filter.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
 arch/arm64/boot/dts/freescale/mba8mx.dtsi | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
index b0662dfa6194..a1ceadfa5b3d 100644
--- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi
+++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
@@ -75,6 +75,14 @@  led2: led2 {
 		};
 	};
 
+	gpio_delays: gpio-delays {
+		compatible = "gpio-delay";
+		#gpio-cells = <3>;
+		gpio-controller;
+		input-gpios = <&expander0 6 GPIO_ACTIVE_HIGH>;
+		gpio-line-names = "LVDS_BRIDGE_EN_1V8";
+	};
+
 	panel0: panel_lvds0 {
 		/*
 		 * Display is not fixed, so compatible has to be added from
@@ -191,6 +199,10 @@  expander0: gpio@23 {
 		interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <2>;
+		gpio-line-names = "", "", "", "",
+				  "", "", "LVDS_BRIDGE_EN_3V3", "",
+				  "", "", "", "",
+				  "", "", "", "";
 
 		sd-mux-oe-hog {
 			gpio-hog;
@@ -272,7 +284,7 @@  &i2c3 {
 	dsi_lvds_bridge: bridge@2d {
 		compatible = "ti,sn65dsi83";
 		reg = <0x2d>;
-		enable-gpios = <&expander0 6 GPIO_ACTIVE_HIGH>;
+		enable-gpios = <&gpio_delays 0 130000 0>;
 		vcc-supply = <&reg_sn65dsi83_1v8>;
 		status = "disabled";