[PATCH v2 7/9] arm64: dts: amlogic: Used onboard usb hub reset on odroid c4

[Anand Moon]

On Odroid c4 previously use gpio-hog to reset the usb hub,
switch to used on-board usb hub reset to enable the usb hub
and enable power to hub.

USB hub is combination of USB 2.0 and USB 3.0 root hub so
use peer-hub node to link then.

Signed-off-by: Anand Moon <linux.amoon at gmail.com>
---
v2: - fix the compatible string.
    - Fix the hub node to use peer-hub to link the usb 2.0 and usb 3.0.
---
 .../boot/dts/amlogic/meson-sm1-odroid-c4.dts  | 36 ++++++++++++-------
 1 file changed, 23 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
index 8c30ce63686e..d04768a66bfe 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
@@ -26,20 +26,30 @@ led-blue {
 	sound {
 		model = "ODROID-C4";
 	};
-};
 
-&gpio {
-	/*
-	 * WARNING: The USB Hub on the Odroid-C4 needs a reset signal
-	 * to be turned high in order to be detected by the USB Controller
-	 * This signal should be handled by a USB specific power sequence
-	 * in order to reset the Hub when USB bus is powered down.
-	 */
-	hog-0 {
-		gpio-hog;
-		gpios = <GPIOH_4 GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "usb-hub-reset";
+	/* USB hub supports both USB 2.0 and USB 3.0 root hub */
+	usb-hub {
+		dr_mode = "host";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		/* 2.0 hub on port 1 */
+		hub_2_0: hub at 1 {
+			compatible = "usb2109,2817";
+			reg = <1>;
+			peer-hub = <&hub_3_0>;
+			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+			vdd-supply = <&vcc_5v>;
+		};
+
+		/* 3.1 hub on port 4 */
+		hub_3_0: hub at 2 {
+			compatible = "usb2109,817";
+			reg = <2>;
+			peer-hub = <&hub_2_0>;
+			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+			vdd-supply = <&vcc_5v>;
+		};
 	};
 };
 
-- 
2.38.1