From: Daniel Thompson <daniel@riscstar.com>

The QCS6490 RB3Gen2 includes a Toshiba TC9564 (a.k.a. Qualcomm QPS615).
TC9564 is an twin Ethernet-AVB/TSN bridge with an integrated PCIe switch.

There are multiple builds of RB3Gen2 with components included/excluded.
That means whether or not there is a phy attached to eMAC0 depends on
the exact board. However all versions include a TC9564 combined with a
single QCS8081 attached to eMAC1.

Add properties to the existing PCI nodes to describe how the TC9564 and
QCS8081 are connected to each other (and to the host SoC).

(Note: "pci1179,0220" is documented in the "net/toshiba,tc956x-dwmac.yaml"
binding, but checkpatch.pl doesn't recognize that.)

Co-developed-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Daniel Thompson <daniel@riscstar.com>
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 45 +++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index e393ccf1884af..72c89aa7a2e43 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -308,6 +308,16 @@ vdd_ntn_1p8: regulator-vdd-ntn-1p8 {
 		regulator-enable-ramp-delay = <10000>;
 	};
 
+	qep_1p8: regulator-qep-1p8 {
+		compatible = "regulator-fixed";
+		regulator-name = "qep_1p8";
+		gpio = <&pm7325_gpios 8 GPIO_ACTIVE_HIGH>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		enable-active-high;
+		regulator-always-on;
+	};
+
 	wcn6750-pmu {
 		compatible = "qcom,wcn6750-pmu";
 		pinctrl-0 = <&bt_en>;
@@ -937,20 +947,46 @@ pcie@3,0 {
 			ranges;
 			bus-range = <0x5 0xff>;
 
-			pci@0,0 {
+			tc956x_emac0: pci@0,0 {
+				compatible = "pci1179,0220";
 				reg = <0x50000 0x0 0x0 0x0 0x0>;
 				#address-cells = <3>;
 				#size-cells = <2>;
 				device_type = "pci";
 				ranges;
+
+				gpio-controller;
+				#gpio-cells = <2>;
 			};
 
 			pci@0,1 {
+				compatible = "pci1179,0220";
 				reg = <0x50100 0x0 0x0 0x0 0x0>;
 				#address-cells = <3>;
 				#size-cells = <2>;
 				device_type = "pci";
 				ranges;
+
+				phy-mode = "sgmii";
+				phy-handle = <&tc956x_emac1_phy>;
+
+				mdio {
+					compatible = "snps,dwmac-mdio";
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					tc956x_emac1_phy: ethernet-phy@1c {
+						compatible = "ethernet-phy-id004d.d101";
+						reg = <0x1c>;
+						reset-gpios = <&tc956x_emac0 1 GPIO_ACTIVE_LOW>;
+						reset-assert-us = <20>;
+						reset-deassert-us = <20>;
+
+						pinctrl-names = "default";
+						pinctrl-0 = <&qep_irq_pin>;
+						interrupts-extended = <&tlmm 101 IRQ_TYPE_EDGE_FALLING>;
+					};
+				};
 			};
 		};
 	};
@@ -1524,6 +1560,13 @@ usb_hub_reset_state: usb-hub-reset-state {
 		drive-strength = <2>;
 		bias-disable;
 	};
+
+	qep_irq_pin: qep-irq-state {
+		pins = "gpio101";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
 };
 
 &lpass_audiocc {
-- 
2.51.0