linux-kernel - [PATCH v5 2/3] arm64: dts: imx8qxp: add cadence usb3 support

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Message-Id: <20230327145523.3121810-3-Frank.Li@nxp.com>
Date:   Mon, 27 Mar 2023 10:55:22 -0400
From:   Frank Li <Frank.Li@....com>
To:     frank.li@....com
Cc:     devicetree@...r.kernel.org, festevam@...il.com,
        imx@...ts.linux.dev, kernel@...gutronix.de,
        krzysztof.kozlowski+dt@...aro.org, krzysztof.kozlowski@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-imx@....com,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        s.hauer@...gutronix.de, shawnguo@...nel.org
Subject: [PATCH v5 2/3] arm64: dts: imx8qxp: add cadence usb3 support

There are cadence usb3.0 controller in 8qxp and 8qm.
Add usb3 node at common connect subsystem.

Signed-off-by: Frank Li <Frank.Li@....com>
---
Change from v4 to v5
 - using shorter clock name according rob's feedback
Change from v3 to v4
 - none
Change from v2 to v3:
- Drop fixed frequency clock. See binding doc patch.
- move req as second property
Change from v1 to v2
- fix shawn's comments

 .../boot/dts/freescale/imx8-ss-conn.dtsi      | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi
index 4852760adeee..b32c2e199c16 100644
--- a/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi
@@ -138,6 +138,53 @@ fec2: ethernet@...50000 {
 		status = "disabled";
 	};
 
+	usbotg3: usb@...10000 {
+		compatible = "fsl,imx8qm-usb3";
+		reg = <0x5b110000 0x10000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		clocks = <&usb3_lpcg IMX_LPCG_CLK_1>,
+			 <&usb3_lpcg IMX_LPCG_CLK_0>,
+			 <&usb3_lpcg IMX_LPCG_CLK_7>,
+			 <&usb3_lpcg IMX_LPCG_CLK_4>,
+			 <&usb3_lpcg IMX_LPCG_CLK_5>;
+		clock-names = "lpm", "bus", "aclk", "ipg", "core";
+		assigned-clocks = <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_MST_BUS>;
+		assigned-clock-rates = <250000000>;
+		power-domains = <&pd IMX_SC_R_USB_2>;
+		status = "disabled";
+
+		usbotg3_cdns3: usb@...20000 {
+			compatible = "cdns,usb3";
+			reg = <0x5b130000 0x10000>,     /* memory area for HOST registers */
+			      <0x5b140000 0x10000>,   /* memory area for DEVICE registers */
+			      <0x5b120000 0x10000>;   /* memory area for OTG/DRD registers */
+			reg-names = "xhci", "dev", "otg";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "host", "peripheral", "otg", "wakeup";
+			phys = <&usb3_phy>;
+			phy-names = "cdns3,usb3-phy";
+			status = "disabled";
+		};
+	};
+
+	usb3_phy: usb-phy@...60000 {
+		compatible = "nxp,salvo-phy";
+		reg = <0x5b160000 0x40000>;
+		clocks = <&usb3_lpcg IMX_LPCG_CLK_6>;
+		clock-names = "salvo_phy_clk";
+		power-domains = <&pd IMX_SC_R_USB_2_PHY>;
+		#phy-cells = <0>;
+		status = "disabled";
+	};
+
 	/* LPCG clocks */
 	sdhc0_lpcg: clock-controller@...00000 {
 		compatible = "fsl,imx8qxp-lpcg";
@@ -234,4 +281,26 @@ usb2_lpcg: clock-controller@...70000 {
 		clock-output-names = "usboh3_ahb_clk", "usboh3_phy_ipg_clk";
 		power-domains = <&pd IMX_SC_R_USB_0_PHY>;
 	};
+
+	usb3_lpcg: clock-controller@...80000 {
+		compatible = "fsl,imx8qxp-lpcg";
+		reg = <0x5b280000 0x10000>;
+		#clock-cells = <1>;
+		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_1>,
+				<IMX_LPCG_CLK_4>, <IMX_LPCG_CLK_5>,
+				<IMX_LPCG_CLK_6>, <IMX_LPCG_CLK_7>;
+		clocks = <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_PER>,
+			 <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_MISC>,
+			 <&conn_ipg_clk>,
+			 <&conn_ipg_clk>,
+			 <&conn_ipg_clk>,
+			 <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_MST_BUS>;
+		clock-output-names = "usb3_app_clk",
+				     "usb3_lpm_clk",
+				     "usb3_ipg_clk",
+				     "usb3_core_pclk",
+				     "usb3_phy_clk",
+				     "usb3_aclk";
+		power-domains = <&pd IMX_SC_R_USB_2_PHY>;
+	};
 };
-- 
2.34.1