linux-kernel - [RFC v1 07/12] arm64: dts: mt7986: add pcie related device nodes

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Message-Id: <20221017104141.7338-8-linux@fw-web.de>
Date:   Mon, 17 Oct 2022 12:41:36 +0200
From:   Frank Wunderlich <linux@...web.de>
To:     linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Sam Shih <sam.shih@...iatek.com>,
        Jieyy Yang <jieyy.yang@...iatek.com>
Subject: [RFC v1 07/12] arm64: dts: mt7986: add pcie related device nodes

From: Sam Shih <sam.shih@...iatek.com>

This patch adds PCIe support for MT7986.

Signed-off-by: Jieyy Yang <jieyy.yang@...iatek.com>
Signed-off-by: Sam Shih <sam.shih@...iatek.com>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>

---
changes compared to sams original version:

- add clock-names to pcie node
  driver does bulk handling without names, but binding requires 6 clocks
  and not only 5 we have
---
 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts | 17 ++++++
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi    | 54 ++++++++++++++++++++
 2 files changed, 71 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
index 58f7e6b169bf..c08ca4746014 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
@@ -54,7 +54,24 @@ switch: switch@0 {
 	};
 };
 
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_pins>;
+	status = "okay";
+};
+
+&pcie_phy {
+	status = "okay";
+};
+
 &pio {
+	pcie_pins: pcie-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie_clk", "pcie_wake", "pcie_pereset";
+		};
+	};
+
 	spi_flash_pins: spi-flash-pins {
 		mux {
 			function = "spi";
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index e77e8deec4b0..007c1e25a639 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -8,6 +8,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/mt7986-clk.h>
 #include <dt-bindings/reset/mt7986-resets.h>
+#include <dt-bindings/phy/phy.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -246,6 +247,59 @@ uart2: serial@...04000 {
 			status = "disabled";
 		};
 
+		pcie: pcie@...80000 {
+			compatible = "mediatek,mt7986-pcie",
+				     "mediatek,mt8192-pcie";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			reg = <0x00 0x11280000 0x00 0x4000>;
+			reg-names = "pcie-mac";
+			interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>;
+			bus-range = <0x00 0xff>;
+			ranges = <0x82000000 0x00 0x20000000 0x00
+				  0x20000000 0x00 0x10000000>;
+			clocks = <&infracfg CLK_INFRA_PCIE_SEL>,
+				 <&infracfg CLK_INFRA_IPCIE_CK>,
+				 <&infracfg CLK_INFRA_IPCIE_PIPE_CK>,
+				 <&infracfg CLK_INFRA_IPCIER_CK>,
+				 <&infracfg CLK_INFRA_IPCIEB_CK>;
+			clock-names = "pl_250m", "tl_26m", "tl_96m",
+				      "tl_32k", "peri_26m";
+			status = "disabled";
+
+			phys = <&pcie_port PHY_TYPE_PCIE>;
+			phy-names = "pcie-phy";
+
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &pcie_intc 0>,
+					<0 0 0 2 &pcie_intc 1>,
+					<0 0 0 3 &pcie_intc 2>,
+					<0 0 0 4 &pcie_intc 3>;
+			pcie_intc: interrupt-controller {
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+
+		pcie_phy: t-phy@...00000 {
+			compatible = "mediatek,mt7986-tphy",
+				     "mediatek,generic-tphy-v2";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			status = "disabled";
+
+			pcie_port: pcie-phy@...00000 {
+				reg = <0 0x11c00000 0 0x20000>;
+				clocks = <&clk40m>;
+				clock-names = "ref";
+				#phy-cells = <1>;
+			};
+		};
+
 		ethsys: syscon@...00000 {
 			 #address-cells = <1>;
 			 #size-cells = <1>;
-- 
2.34.1