ARM: dts: colibri-imx7: prepare for LVDS transceiver overlay

Add the pinmux group for LVDS transceiver related signals to use it
in an overlay.
Fix pinmux default values for these pins.

Enable the LVDS transceiver for NAND modules on a board
Iris v2.0A by default.

Related-to: ELB-3898
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

4 files changed, 98 insertions, 13 deletions

diff --git a/arch/arm/boot/dts/imx7-colibri-iris-v2.dtsi b/arch/arm/boot/dts/imx7-colibri-iris-v2.dtsi
index 4904edbcf39a..f5d13ab57c46 100644
--- a/arch/arm/boot/dts/imx7-colibri-iris-v2.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri-iris-v2.dtsi
@@ -146,14 +146,6 @@
 	};
 };
 
-&gpio7 {
-	lvds_tx_on {
-		gpio-hog;
-		gpios = <11 0>; /* SODIMM 99 */
-		output-high;
-	};
-};
-
 /* The define SD_1_8 allows to use the SD interface at a higher speed mode
  * if the card supports it. For this the signaling voltage is switched from
  * 3.3V to 1.8V under the usdhc1's drivers control.
diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi
index c3475cbdd37b..3856c3a50ccf 100644
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -13,6 +13,7 @@
 		brightness-levels = <0 45 63 88 119 158 203 255>;
 		default-brightness-level = <4>;
 		enable-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
+		power-supply = <&reg_module_3v3>;
 		pwms = <&pwm1 0 6666667 PWM_POLARITY_INVERTED>;
 		status = "okay";
 	};
@@ -693,7 +694,7 @@
 &iomuxc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gpio1 &pinctrl_gpio2 &pinctrl_gpio3 &pinctrl_gpio4
-		     &pinctrl_gpio5 &pinctrl_gpio7>;
+		     &pinctrl_gpio5 &pinctrl_lvds_transceiver>;
 
 	pinctrl_atmel_adapter: atmeladaptergrp { /* ATMEL MXT TOUCH ADAPTER */
 		fsl,pins = <
@@ -715,8 +716,6 @@
 			MX7D_PAD_EPDC_DATA09__GPIO2_IO9		0x14 /* SODIMM 89 */
 			MX7D_PAD_EPDC_DATA08__GPIO2_IO8		0x74 /* SODIMM 91 */
 			MX7D_PAD_LCD_RESET__GPIO3_IO4		0x14 /* SODIMM 93 */
-			MX7D_PAD_EPDC_DATA13__GPIO2_IO13	0x14 /* SODIMM 95 */
-			MX7D_PAD_ENET1_RGMII_TXC__GPIO7_IO11	0x14 /* SODIMM 99 */
 			MX7D_PAD_EPDC_DATA10__GPIO2_IO10	0x74 /* SODIMM 105 */
 			MX7D_PAD_EPDC_DATA00__GPIO2_IO0		0x14 /* SODIMM 111 */
 			MX7D_PAD_EPDC_DATA01__GPIO2_IO1		0x14 /* SODIMM 113 */
@@ -956,6 +955,14 @@
 		>;
 	};
 
+	pinctrl_lvds_transceiver: lvds-tx {
+		fsl,pins = <
+			MX7D_PAD_ENET1_RGMII_RD3__GPIO7_IO3	0x74 /* SODIMM 55 */
+			MX7D_PAD_ENET1_RGMII_RD2__GPIO7_IO2	0x14 /* SODIMM 63 */
+			MX7D_PAD_EPDC_DATA13__GPIO2_IO13	0x14 /* SODIMM 95 */
+			MX7D_PAD_ENET1_RGMII_TXC__GPIO7_IO11	0x14 /* SODIMM 99 */
+		>;
+	};
 	pinctrl_pwm1: pwm1-grp {
 		fsl,pins = <
 			MX7D_PAD_GPIO1_IO08__PWM1_OUT		0x79
diff --git a/arch/arm/boot/dts/imx7d-colibri-iris-v2.dts b/arch/arm/boot/dts/imx7d-colibri-iris-v2.dts
index d30880d0953c..7ddae094529f 100644
--- a/arch/arm/boot/dts/imx7d-colibri-iris-v2.dts
+++ b/arch/arm/boot/dts/imx7d-colibri-iris-v2.dts
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+ OR MIT
 /*
- * Copyright 2017-2020 Toradex
+ * Copyright 2017-2021 Toradex
  */
 
 /dts-v1/;
@@ -15,6 +15,49 @@
 		     "fsl,imx7d";
 };
 
+&gpio2 {
+	/*
+	 * This switches the LVDS transceiver to VESA color mapping mode.
+	 */
+	LVDS_COLOR_MAP {
+		gpio-hog;
+		gpios = <13 GPIO_ACTIVE_HIGH>; /* SODIMM 95 */
+		line-name = "LVDS_COLOR_MAP";
+		output-low;
+	};
+};
+
+&gpio7 {
+        /*
+	 * This switches the LVDS transceiver to the 24-bit RGB mode.
+	 */
+	LVDS_RGB_MODE {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>; /* SODIMM 63 */
+		line-name = "LVDS_RGB_MODE";
+		output-low;
+	};
+
+	/*
+	 * This switches the LVDS transceiver to the single-channel
+	 * output mode.
+	 */
+	LVDS_CH_MODE {
+		gpio-hog;
+		gpios = <3 GPIO_ACTIVE_HIGH>; /* SODIMM 55 */
+		line-name = "LVDS_CH_MODE";
+		output-high;
+	};
+
+	/* This turns the LVDS transceiver on */
+	LVDS_POWER_ON {
+		gpio-hog;
+		gpios = <11 GPIO_ACTIVE_HIGH>; /* SODIMM 99 */
+		line-name = "LVDS_POWER_ON";
+		output-high;
+	};
+};
+
 &usbotg2 {
 	vbus-supply = <&reg_usbh_vbus>;
 	status = "okay";
diff --git a/arch/arm/boot/dts/imx7s-colibri-iris-v2.dts b/arch/arm/boot/dts/imx7s-colibri-iris-v2.dts
index 26a9171b06f8..9b16c50a9ca6 100644
--- a/arch/arm/boot/dts/imx7s-colibri-iris-v2.dts
+++ b/arch/arm/boot/dts/imx7s-colibri-iris-v2.dts
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+ OR MIT
 /*
- * Copyright 2017-2020 Toradex
+ * Copyright 2017-2021 Toradex
  */
 
 /dts-v1/;
@@ -14,3 +14,46 @@
 			"toradex,colibri-imx7s",
 			"fsl,imx7s";
 };
+
+&gpio2 {
+	/*
+	 * This switches the LVDS transceiver to VESA color mapping mode.
+	 */
+	LVDS_COLOR_MAP {
+		gpio-hog;
+		gpios = <13 GPIO_ACTIVE_HIGH>; /* SODIMM 95 */
+		line-name = "LVDS_COLOR_MAP";
+		output-low;
+	};
+};
+
+&gpio7 {
+        /*
+	 * This switches the LVDS transceiver to the 24-bit RGB mode.
+	 */
+	LVDS_RGB_MODE {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>; /* SODIMM 63 */
+		line-name = "LVDS_RGB_MODE";
+		output-low;
+	};
+
+	/*
+	 * This switches the LVDS transceiver to the single-channel
+	 * output mode.
+	 */
+	LVDS_CH_MODE {
+		gpio-hog;
+		gpios = <3 GPIO_ACTIVE_HIGH>; /* SODIMM 55 */
+		line-name = "LVDS_CH_MODE";
+		output-high;
+	};
+
+	/* This turns the LVDS transceiver on */
+	LVDS_POWER_ON {
+		gpio-hog;
+		gpios = <11 GPIO_ACTIVE_HIGH>; /* SODIMM 99 */
+		line-name = "LVDS_POWER_ON";
+		output-high;
+	};
+};