linux-kernel - [PATCH] ARM: dts: imx: Add dummy PHYs for HSIC-only USB controllers

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Date:   Thu, 18 Oct 2018 09:45:04 +0200
From:   Frieder Schrempf <frieder.schrempf@...tron.de>
To:     devicetree@...r.kernel.org, peter.chen@....com
Cc:     Frieder Schrempf <frieder.schrempf@...tron.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        NXP Linux Team <linux-imx@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: dts: imx: Add dummy PHYs for HSIC-only USB controllers

Some SOCs in the i.MX6 family have a USB host controller that is
only capable of the HSIC interface and has no on-board PHY.

To be able to use these controllers, we need to add "usb-nop-xceiv"
dummy PHYs.

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 arch/arm/boot/dts/imx6qdl.dtsi | 14 ++++++++++++++
 arch/arm/boot/dts/imx6sl.dtsi  |  7 +++++++
 arch/arm/boot/dts/imx6sx.dtsi  |  6 ++++++
 3 files changed, 27 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 61d2d26..d3404d1 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -139,6 +139,16 @@
 		interrupts = <0 94 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	usbphynop1: usbphynop1 {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+	};
+
+	usbphynop2: usbphynop2 {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -981,6 +991,8 @@
 				reg = <0x02184400 0x200>;
 				interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6QDL_CLK_USBOH3>;
+				fsl,usbphy = <&usbphynop1>;
+				phy_type = "hsic";
 				fsl,usbmisc = <&usbmisc 2>;
 				dr_mode = "host";
 				ahb-burst-config = <0x0>;
@@ -994,6 +1006,8 @@
 				reg = <0x02184600 0x200>;
 				interrupts = <0 42 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6QDL_CLK_USBOH3>;
+				fsl,usbphy = <&usbphynop2>;
+				phy_type = "hsic";
 				fsl,usbmisc = <&usbmisc 3>;
 				dr_mode = "host";
 				ahb-burst-config = <0x0>;
diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
index 7a4f5da..81edcdc 100644
--- a/arch/arm/boot/dts/imx6sl.dtsi
+++ b/arch/arm/boot/dts/imx6sl.dtsi
@@ -110,6 +110,11 @@
 		interrupts = <0 94 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	usbphynop1: usbphynop1 {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -815,6 +820,8 @@
 				reg = <0x02184400 0x200>;
 				interrupts = <0 40 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SL_CLK_USBOH3>;
+				fsl,usbphy = <&usbphynop1>;
+				phy_type = "hsic";
 				fsl,usbmisc = <&usbmisc 2>;
 				dr_mode = "host";
 				ahb-burst-config = <0x0>;
diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index 844caa3..07ed417 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi
@@ -159,6 +159,11 @@
 		interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	usbphynop1: usbphynop1 {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -877,6 +882,7 @@
 				reg = <0x02184400 0x200>;
 				interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_USBOH3>;
+				fsl,usbphy = <&usbphynop1>;
 				fsl,usbmisc = <&usbmisc 2>;
 				phy_type = "hsic";
 				fsl,anatop = <&anatop>;
-- 
2.7.4