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Commit 56fd3dc7 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Tony Lindgren
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ARM: dts: am43xx-epos-evm: Add gpio-hog for configuring the display/audio mux 



GPIO2_1 is used as a mux switch between LCD and HDMI displays. This mux
affects audio routing as well since in LCD mode HDMI audio is not possible
and when HDMI is selected analog audio is not working.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 20746c50

arch/arm/boot/dts/am43x-epos-evm.dts

+15 −12
Original line number Diff line number Diff line
@@ -35,17 +35,6 @@ 
		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";

		label = "lcd";



		pinctrl-names = "default";

		pinctrl-0 = <&lcd_pins>;



		/*

		 * SelLCDorHDMI, LOW to select HDMI. This is not really the

		 * panel's enable GPIO, but we don't have HDMI driver support nor

		 * support to switch between two displays, so using this gpio as

		 * panel's enable should be safe.

		 */

		enable-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;



		panel-timing {

			clock-frequency = <33000000>;

			hactive = <800>;
@@ -278,7 +267,7 @@ 
			>;

		};



		lcd_pins: lcd_pins {

		display_mux_pins: display_mux_pins {

			pinctrl-single,pins = <

				/* GPMC CLK -> GPIO 2_1 to select LCD / HDMI */

				0x08C (PIN_OUTPUT_PULLUP | MUX_MODE7)
@@ -458,7 +447,21 @@ 
};



&gpio2 {

	pinctrl-names = "default";

	pinctrl-0 = <&display_mux_pins>;

	status = "okay";



	p1 {

		/*

		 * SelLCDorHDMI selects between display and audio paths:

		 * Low: HDMI display with audio via HDMI

		 * High: LCD display with analog audio via aic3111 codec

		 */

		gpio-hog;

		gpios = <1 GPIO_ACTIVE_HIGH>;

		output-high;

		line-name = "SelLCDorHDMI";

	};

};



&gpio3 {