[PATCH v3 15/21] arm64: dts: renesas: r9a09g056: Add USB2.0 VBUS_SEL mux-controller support

[Tommaso Merciai]

Enable control of USB2.0 VBUSEN via the VBUS_SEL bit in the VBENCTL
register. According to the RZ/V2N SoC hardware manual, OTG channel
require VBUS_SEL set.

Add the internal mux-controller node to the usb20phyrst reset node.

Set the required mux-states in usb2_phy0 (OTG: state 1) node.

This enables proper VBUSEN management for OTG channel.

Signed-off-by: Tommaso Merciai <tommaso.merciai.xr at bp.renesas.com>
---
v2->v3:
 - Manipulate the mux controller as an internal node, and update
   commit body accordingly.

v1->v2:
 - New patch

 arch/arm64/boot/dts/renesas/r9a09g056.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g056.dtsi b/arch/arm64/boot/dts/renesas/r9a09g056.dtsi
index 8781c2fa7313..205fa37d04ef 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g056.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g056.dtsi
@@ -663,6 +663,7 @@ usb2_phy0: usb-phy at 15800200 {
 			resets = <&usb20phyrst>;
 			#phy-cells = <1>;
 			power-domains = <&cpg>;
+			mux-states = <&usb20phyrst_mux 1>;
 			status = "disabled";
 		};
 
@@ -692,6 +693,10 @@ usb20phyrst: usb20phy-reset at 15830000 {
 			power-domains = <&cpg>;
 			#reset-cells = <0>;
 			status = "disabled";
+
+			usb20phyrst_mux: mux-controller {
+				#mux-state-cells = <1>;
+			};
 		};
 
 		sdhi0: mmc at 15c00000  {
-- 
2.43.0