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From:   Samuel Holland <samuel@sholland.org>
To:     Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
        Jernej Skrabec <jernej.skrabec@siol.net>,
        Andre Przywara <andre.przywara@arm.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Rob Herring <robh+dt@kernel.org>
Cc:     devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev,
        Samuel Holland <samuel@sholland.org>
Subject: [PATCH 2/2] arm64: dts: allwinner: h6: Wrap DWC3 and PHY in glue layer
Date:   Tue, 20 Apr 2021 23:28:34 -0500
Message-Id: <20210421042834.27309-3-samuel@sholland.org>
In-Reply-To: <20210421042834.27309-1-samuel@sholland.org>
References: <20210421042834.27309-1-samuel@sholland.org>
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The USB3 IP in the H6 is organized such that the reset line affects both
the DWC3 core and the PHY. To model that, following the example of
several other platforms, wrap those nodes in a glue layer node.

The inner nodes no longer need to be disabled, since the glue layer is
disabled by default to keep it in reset.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 .../dts/allwinner/sun50i-h6-beelink-gs1.dts   |  6 +-
 .../dts/allwinner/sun50i-h6-orangepi-3.dts    |  6 +-
 .../boot/dts/allwinner/sun50i-h6-pine-h64.dts |  9 ++-
 .../dts/allwinner/sun50i-h6-tanix-tx6.dts     |  6 +-
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi  | 60 ++++++++++---------
 5 files changed, 40 insertions(+), 47 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
index 0dde972324e7..5bab12d81468 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
@@ -86,10 +86,6 @@ &de {
 	status = "okay";
 };
 
-&dwc3 {
-	status = "okay";
-};
-
 &ehci0 {
 	status = "okay";
 };
@@ -333,6 +329,6 @@ &usb2phy {
 	status = "okay";
 };
 
-&usb3phy {
+&usb3 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index 38c48130f079..baff16caedb5 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -111,10 +111,6 @@ &de {
 	status = "okay";
 };
 
-&dwc3 {
-	status = "okay";
-};
-
 &ehci0 {
 	status = "okay";
 };
@@ -388,6 +384,6 @@ &usb2phy {
 	status = "okay";
 };
 
-&usb3phy {
+&usb3 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
index 647669511381..fe4d74ade6e0 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
@@ -94,10 +94,6 @@ &de {
 	status = "okay";
 };
 
-&dwc3 {
-	status = "okay";
-};
-
 &ehci0 {
 	status = "okay";
 };
@@ -362,7 +358,10 @@ &usb2phy {
 	status = "okay";
 };
 
+&usb3 {
+	status = "okay";
+};
+
 &usb3phy {
 	phy-supply = <&reg_usb_vbus>;
-	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-tanix-tx6.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-tanix-tx6.dts
index be81330db14f..8cb06df231ab 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-tanix-tx6.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-tanix-tx6.dts
@@ -55,10 +55,6 @@ &de {
 	status = "okay";
 };
 
-&dwc3 {
-	status = "okay";
-};
-
 &ehci0 {
 	status = "okay";
 };
@@ -119,6 +115,6 @@ &usb2phy {
 	status = "okay";
 };
 
-&usb3phy {
+&usb3 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 15b14ed566dc..c5eea8b50ef8 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -797,36 +797,42 @@ ohci0: usb@5101400 {
 			status = "disabled";
 		};
 
-		dwc3: usb@5200000 {
-			compatible = "snps,dwc3";
-			reg = <0x05200000 0x10000>;
-			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&ccu CLK_BUS_XHCI>,
-				 <&ccu CLK_BUS_XHCI>,
-				 <&rtc 0>;
-			clock-names = "ref", "bus_early", "suspend";
+		usb3: usb@5200000 {
+			compatible = "allwinner,sun50i-h6-dwc3";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
 			resets = <&ccu RST_BUS_XHCI>;
-			/*
-			 * The datasheet of the chip doesn't declare the
-			 * peripheral function, and there's no boards known
-			 * to have a USB Type-B port routed to the port.
-			 * In addition, no one has tested the peripheral
-			 * function yet.
-			 * So set the dr_mode to "host" in the DTSI file.
-			 */
-			dr_mode = "host";
-			phys = <&usb3phy>;
-			phy-names = "usb3-phy";
 			status = "disabled";
-		};
 
-		usb3phy: phy@5210000 {
-			compatible = "allwinner,sun50i-h6-usb3-phy";
-			reg = <0x5210000 0x10000>;
-			clocks = <&ccu CLK_USB_PHY1>;
-			resets = <&ccu RST_USB_PHY1>;
-			#phy-cells = <0>;
-			status = "disabled";
+			dwc3: usb@5200000 {
+				compatible = "snps,dwc3";
+				reg = <0x05200000 0x10000>;
+				interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ccu CLK_BUS_XHCI>,
+					 <&ccu CLK_BUS_XHCI>,
+					 <&rtc 0>;
+				clock-names = "ref", "bus_early", "suspend";
+				/*
+				 * The datasheet of the chip doesn't declare the
+				 * peripheral function, and there's no boards known
+				 * to have a USB Type-B port routed to the port.
+				 * In addition, no one has tested the peripheral
+				 * function yet.
+				 * So set the dr_mode to "host" in the DTSI file.
+				 */
+				dr_mode = "host";
+				phys = <&usb3phy>;
+				phy-names = "usb3-phy";
+			};
+
+			usb3phy: phy@5210000 {
+				compatible = "allwinner,sun50i-h6-usb3-phy";
+				reg = <0x5210000 0x10000>;
+				clocks = <&ccu CLK_USB_PHY1>;
+				resets = <&ccu RST_USB_PHY1>;
+				#phy-cells = <0>;
+			};
 		};
 
 		ehci3: usb@5311000 {
-- 
2.26.3