linux-kernel - [RFC 5/7] arm64: dts: imx8mp: add the iMX8MP PCIe support

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Date:   Mon,  7 Mar 2022 14:14:34 +0800
From:   Richard Zhu <hongxing.zhu@....com>
To:     p.zabel@...gutronix.de, l.stach@...gutronix.de,
        bhelgaas@...gle.com, lorenzo.pieralisi@....com, robh@...nel.org,
        shawnguo@...nel.org
Cc:     devicetree@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de, linux-imx@....com,
        Richard Zhu <hongxing.zhu@....com>
Subject: [RFC 5/7] arm64: dts: imx8mp: add the iMX8MP PCIe support

Add the i.MX8MP PCIe support.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 46 ++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index b40a5646f205..e7b3d8029e34 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -5,6 +5,7 @@
 
 #include <dt-bindings/clock/imx8mp-clock.h>
 #include <dt-bindings/power/imx8mp-power.h>
+#include <dt-bindings/reset/imx8mp-reset.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
@@ -375,7 +376,8 @@ iomuxc: pinctrl@...30000 {
 			};
 
 			gpr: iomuxc-gpr@...40000 {
-				compatible = "fsl,imx8mp-iomuxc-gpr", "syscon";
+				compatible = "fsl,imx8mp-iomuxc-gpr",
+					     "fsl,imx6q-iomuxc-gpr", "syscon";
 				reg = <0x30340000 0x10000>;
 			};
 
@@ -965,6 +967,17 @@ aips4: bus@...00000 {
 			#size-cells = <1>;
 			ranges;
 
+			pcie_phy: pcie-phy@...00000 {
+				compatible = "fsl,imx8mp-pcie-phy";
+				reg = <0x32f00000 0x10000>;
+				resets = <&src IMX8MP_RESET_PCIEPHY>,
+					 <&src IMX8MP_RESET_PCIEPHY_PERST>;
+				reset-names = "pciephy", "perst";
+				power-domains = <&hsio_blk_ctrl IMX8MP_HSIOBLK_PD_PCIE_PHY>;
+				#phy-cells = <0>;
+				status = "disabled";
+			};
+	
 			hsio_blk_ctrl: blk-ctrl@...10000 {
 				compatible = "fsl,imx8mp-hsio-blk-ctrl", "syscon";
 				reg = <0x32f10000 0x24>;
@@ -980,6 +993,37 @@ hsio_blk_ctrl: blk-ctrl@...10000 {
 			};
 		};
 
+		pcie: pcie@...00000 {
+			compatible = "fsl,imx8mp-pcie";
+			reg = <0x33800000 0x400000>, <0x1ff00000 0x80000>;
+			reg-names = "dbi", "config";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			bus-range = <0x00 0xff>;
+			ranges =  <0x81000000 0 0x00000000 0x1ff80000 0 0x00010000 /* downstream I/O 64KB */
+				   0x82000000 0 0x18000000 0x18000000 0 0x07f00000>; /* non-prefetchable memory */
+			num-lanes = <1>;
+			num-viewport = <4>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &gic GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 2 &gic GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 3 &gic GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 4 &gic GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			fsl,max-link-speed = <3>;
+			linux,pci-domain = <0>;
+			power-domains = <&hsio_blk_ctrl IMX8MP_HSIOBLK_PD_PCIE>;
+			resets = <&src IMX8MP_RESET_PCIE_CTRL_APPS_EN>,
+				 <&src IMX8MP_RESET_PCIE_CTRL_APPS_TURNOFF>;
+			reset-names = "apps", "turnoff";
+			phys = <&pcie_phy>;
+			phy-names = "pcie-phy";
+			status = "disabled";
+		};
+
 		gpu3d: gpu@...00000 {
 			compatible = "vivante,gc";
 			reg = <0x38000000 0x8000>;
-- 
2.25.1