[PATCH 3/4] ARM: dts: imx6q: Add Variscite DART-MX6 Carrier-board support

On Tue, Nov 21, 2017 at 2:28 PM, Neil Armstrong [off-list ref] wrote:

+       gpio-keys {
+               compatible = "gpio-keys";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               autorepeat;
+
+               button at 0 {

If you build this with W=1 it will give you warnings about using a
unit address without its corresponding reg field.

You could just drop the @x.

+                       gpios = <&gpio4 26 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_BACK>;
+                       label = "Key Back";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+
+               button at 1 {
+                       gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_HOME>;
+                       label = "Key Home";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+
+               button at 2 {
+                       gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_MENU>;
+                       label = "Key Menu";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+       };

+       panel1: lvds-panel {
+               compatible = "sgd,gktw70sdae4se", "panel-lvds";

sgd,gktw70sdae4se is not defined anywhere.

Documentation/devicetree/bindings/display/panel/panel-lvds.txt says"

"- compatible: Shall contain "panel-lvds" in addition to a mandatory
  panel-specific compatible string defined in individual panel bindings. The
  "panel-lvds" value shall never be used on its own."

+               backlight = <&backlight_lvds>;
+
+               width-mm = <153>;
+               height-mm = <86>;
+
+               label = "gktw70sdae4se";
+
+               data-mapping = "jeida-18";
+
+               panel-timing {
+                       clock-frequency = <32000000>;
+                       hactive = <800>;
+                       vactive = <480>;
+                       hback-porch = <39>;
+                       hfront-porch = <39>;
+                       vback-porch = <29>;
+                       vfront-porch = <13>;
+                       hsync-len = <47>;
+                       vsync-len = <2>;
+               };
+
+               port {
+                       panel_in: endpoint {
+                               remote-endpoint = <&lvds1_out>;
+                       };
+               };
+       };
+
+       reg_usb_h1_vbus: regulator-usbh1vbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usb_h1_vbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               gpio = <&gpio1 28 0>;

It would be better to use:
gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;

+               enable-active-high;
+       };
+
+       reg_usb_otg_vbus: regulator-usbotgvbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usb_otg_vbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               gpio = <&gpio4 15 0>;

Same here.

+               enable-active-high;
+       };
+

+
+&fec {
+       status = "okay";
+       phy-mode = "rgmii";
+       phy-reset-gpios = <&gpio1 25 0>;

GPIO_ACTIVE_LOW please.

+};
+
+&hdmi {
+       ddc-i2c-bus = <&i2c1>;
+       status = "okay";
+};
+
+&pcie {
+       reset-gpio    = <&gpio4 11 0>;

GPIO_ACTIVE_LOW

+       wake-up-gpio  = <&gpio4 31 1>;

This is not a valid property.

+       disable-gpio  = <&gpio5 5 0>;

This is not a valid property.