[PATCH v1] arm: dts: mt7623: add PCIe related nodes

[ryder.lee@mediatek.com (Ryder Lee)]

This patch adds some device nodes for the PCIe function block and updates
related pinmux.

Moreover, we add interrupt-map properties in both parent and children as
the chip only has one IRQ per slot that is connected to all INTx and get
propagated through the bridges and it also represents the root ports own
interrupts.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---

Sorry to send v1 in such a rush. Somehow I forgot to add something in previous version.

changes since v1:
 - enable device nodes - pcie0_phy & pcie2_phy
 - fix dtc warning: Warning (pci_bridge): Node /pcie-controller at 1a140000 node name is not "pci" or "pcie"
---
 arch/arm/boot/dts/mt7623.dtsi                 | 105 ++++++++++++++++++++++++++
 arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts |  30 ++++++++
 2 files changed, 135 insertions(+)

diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
index 629c92b..137ce99 100644
--- a/arch/arm/boot/dts/mt7623.dtsi
+++ b/arch/arm/boot/dts/mt7623.dtsi
@@ -667,6 +667,111 @@
 		#reset-cells = <1>;
 	};
 
+	pcie: pcie at 1a140000 {
+		compatible = "mediatek,mt7623-pcie";
+		device_type = "pci";
+		reg = <0 0x1a140000 0 0x1000>, /* PCIe shared registers */
+		      <0 0x1a142000 0 0x1000>, /* Port0 registers */
+		      <0 0x1a143000 0 0x1000>, /* Port1 registers */
+		      <0 0x1a144000 0 0x1000>; /* Port2 registers */
+		reg-names = "subsys", "port0", "port1", "port2";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0xf800 0 0 0>;
+		interrupt-map = <0x0000 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>,
+				<0x0800 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>,
+				<0x1000 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_ETHIF_SEL>,
+			 <&hifsys CLK_HIFSYS_PCIE0>,
+			 <&hifsys CLK_HIFSYS_PCIE1>,
+			 <&hifsys CLK_HIFSYS_PCIE2>;
+		clock-names = "free_ck", "sys_ck0", "sys_ck1", "sys_ck2";
+		resets = <&hifsys MT2701_HIFSYS_PCIE0_RST>,
+			 <&hifsys MT2701_HIFSYS_PCIE1_RST>,
+			 <&hifsys MT2701_HIFSYS_PCIE2_RST>;
+		reset-names = "pcie-rst0", "pcie-rst1", "pcie-rst2";
+		phys = <&pcie0_port PHY_TYPE_PCIE>,
+		       <&pcie1_port PHY_TYPE_PCIE>,
+		       <&u3port1 PHY_TYPE_PCIE>;
+		phy-names = "pcie-phy0", "pcie-phy1", "pcie-phy2";
+		power-domains = <&scpsys MT2701_POWER_DOMAIN_HIF>;
+		bus-range = <0x00 0xff>;
+		status = "disabled";
+		ranges = <0x81000000 0 0x1a160000 0 0x1a160000 0 0x00010000
+			  0x83000000 0 0x60000000 0 0x60000000 0 0x10000000>;
+
+		pcie at 0,0 {
+			reg = <0x0000 0 0 0 0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0>;
+			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>;
+			ranges;
+			num-lanes = <1>;
+			status = "disabled";
+		};
+
+		pcie at 1,0 {
+			reg = <0x0800 0 0 0 0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0>;
+			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>;
+			ranges;
+			num-lanes = <1>;
+			status = "disabled";
+		};
+
+		pcie at 2,0 {
+			reg = <0x1000 0 0 0 0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0>;
+			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
+			ranges;
+			num-lanes = <1>;
+			status = "disabled";
+		};
+	};
+
+	pcie0_phy: pcie-phy at 1a149000 {
+		compatible = "mediatek,generic-tphy-v1";
+		reg = <0 0x1a149000 0 0x0700>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		status = "disabled";
+
+		pcie0_port: pcie-phy at 1a149900 {
+			reg = <0 0x1a149900 0 0x0700>;
+			clocks = <&clk26m>;
+			clock-names = "ref";
+			#phy-cells = <1>;
+			status = "okay";
+		};
+	};
+
+	pcie1_phy: pcie-phy at 1a14a000 {
+		compatible = "mediatek,generic-tphy-v1";
+		reg = <0 0x1a14a000 0 0x0700>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		status = "disabled";
+
+		pcie1_port: pcie-phy at 1a14a900 {
+			reg = <0 0x1a14a900 0 0x0700>;
+			clocks = <&clk26m>;
+			clock-names = "ref";
+			#phy-cells = <1>;
+			status = "okay";
+		};
+	};
+
 	usb1: usb at 1a1c0000 {
 		compatible = "mediatek,mt7623-xhci",
 			     "mediatek,mt8173-xhci";
diff --git a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
index 7bf5aa2..3efecc5 100644
--- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
+++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
@@ -209,6 +209,28 @@
 	vqmmc-supply = <&mt6323_vio18_reg>;
 };
 
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_default>;
+	status = "okay";
+
+	pcie at 0,0 {
+		status = "okay";
+	};
+
+	pcie at 1,0 {
+		status = "okay";
+	};
+};
+
+&pcie0_phy {
+	status = "okay";
+};
+
+&pcie1_phy {
+	status = "okay";
+};
+
 &pio {
 	cir_pins_a:cir at 0 {
 		pins_cir {
@@ -376,6 +398,14 @@
 		};
 	};
 
+	pcie_default: pcie_pin_default {
+		pins_cmd_dat {
+			pinmux = <MT7623_PIN_208_AUD_EXT_CK1_FUNC_PCIE0_PERST_N>,
+				 <MT7623_PIN_209_AUD_EXT_CK2_FUNC_PCIE1_PERST_N>;
+			bias-disable;
+		};
+	};
+
 	pwm_pins_a: pwm at 0 {
 		pins_pwm {
 			pinmux = <MT7623_PIN_203_PWM0_FUNC_PWM0>,
-- 
1.9.1