arm64: dts: renesas: salvator-x(s): Factor out USB ch2 parts

Move the common parts related to the third USB2 interface on
Salvator-X(S) boards to salvator-common.dtsi, to reduce current and
avoid future duplication of board descriptions.

As this interface is not present on all SoCs that can be found on
Salvator-X(S), but only on R-Car H3, its descriptions are protected by
the preprocessor symbol SOC_HAS_USB2_CH2, defined in r8a77951.dtsi.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/ebc434502fc899b1f9d9640f560c3eaab6bb0927.1623087028.git.geert+renesas@glider.be

arch/arm64/boot/dts/renesas/r8a77950-salvator-x.dts

@@ -47,25 +47,3 @@ &du {
 	clock-names = "du.0", "du.1", "du.2", "du.3",
 		      "dclkin.0", "dclkin.1", "dclkin.2", "dclkin.3";
 };
-
-&ehci2 {
-	status = "okay";
-};
-
-&ohci2 {
-	status = "okay";
-};
-
-&pfc {
-	usb2_pins: usb2 {
-		groups = "usb2";
-		function = "usb2";
-	};
-};
-
-&usb2_phy2 {
-	pinctrl-0 = <&usb2_pins>;
-	pinctrl-names = "default";
-
-	status = "okay";
-};

arch/arm64/boot/dts/renesas/r8a77951-salvator-x.dts

@@ -47,25 +47,3 @@ &du {
 	clock-names = "du.0", "du.1", "du.2", "du.3",
 		      "dclkin.0", "dclkin.1", "dclkin.2", "dclkin.3";
 };
-
-&ehci2 {
-	status = "okay";
-};
-
-&ohci2 {
-	status = "okay";
-};
-
-&pfc {
-	usb2_pins: usb2 {
-		groups = "usb2";
-		function = "usb2";
-	};
-};
-
-&usb2_phy2 {
-	pinctrl-0 = <&usb2_pins>;
-	pinctrl-names = "default";
-
-	status = "okay";
-};

arch/arm64/boot/dts/renesas/r8a77951-salvator-xs.dts

@@ -48,10 +48,6 @@ &du {
 		      "dclkin.0", "dclkin.1", "dclkin.2", "dclkin.3";
 };
 
-&ehci2 {
-	status = "okay";
-};
-
 &ehci3 {
 	dr_mode = "otg";
 	status = "okay";
@@ -62,21 +58,12 @@ &hsusb3 {
 	status = "okay";
 };
 
-&ohci2 {
-	status = "okay";
-};
-
 &ohci3 {
 	dr_mode = "otg";
 	status = "okay";
 };
 
 &pfc {
-	usb2_pins: usb2 {
-		groups = "usb2";
-		function = "usb2";
-	};
-
 	/*
 	 * - On Salvator-X[S], GP6_3[01] are connected to ADV7482 as irq pins
 	 *   (when SW31 is the default setting on Salvator-XS).
@@ -95,13 +82,6 @@ usb2_ch3_pins: usb2_ch3 {
 	};
 };
 
-&usb2_phy2 {
-	pinctrl-0 = <&usb2_pins>;
-	pinctrl-names = "default";
-
-	status = "okay";
-};
-
 &usb2_phy3 {
 	pinctrl-0 = <&usb2_ch3_pins>;
 	pinctrl-names = "default";

arch/arm64/boot/dts/renesas/r8a77951.dtsi

@@ -13,6 +13,7 @@
 
 #define SOC_HAS_HDMI1
 #define SOC_HAS_SATA
+#define SOC_HAS_USB2_CH2
 
 / {
 	compatible = "renesas,r8a7795";

arch/arm64/boot/dts/renesas/salvator-common.dtsi

@@ -1023,3 +1023,27 @@ &xhci0 {
 
 	status = "okay";
 };
+
+#ifdef SOC_HAS_USB2_CH2
+&ehci2 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&pfc {
+	usb2_pins: usb2 {
+		groups = "usb2";
+		function = "usb2";
+	};
+};
+
+&usb2_phy2 {
+	pinctrl-0 = <&usb2_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+#endif /* SOC_HAS_USB2_CH2 */