From 20bbde0628b30e5ac720e097cb00c36287ca4e38 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Wed, 27 Jul 2016 15:48:19 -0600
Subject: [PATCH] ARM: tegra: add PCIe controller to Tegra186 SoC DT

The Tegra186 PCIe DT content is almost identical to previous chips, except
that the:

- There are 3 ports instead of 2.
- Some physical addresses have moved.
- PHY programming is handled by firmware, so CCPLEX DTs don't need to
  reference any PHY.
- The power domain is explicitly represented in DT. This change is
  mandatory for Tegra186 since standard power domain APIs are used, and
  should be made to the DT for older SoCs, although we get away without
  doing so since U-Boot currently uses custom APIs that hard-code power
  domain IDs.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
---
 arch/arm/dts/tegra186.dtsi | 92 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/arch/arm/dts/tegra186.dtsi b/arch/arm/dts/tegra186.dtsi
index 2cc455ddc0..c296c2f202 100644
--- a/arch/arm/dts/tegra186.dtsi
+++ b/arch/arm/dts/tegra186.dtsi
@@ -3,10 +3,12 @@
 #include <dt-bindings/gpio/tegra186-gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/mailbox/tegra186-hsp.h>
+#include <dt-bindings/power/tegra186-powergate.h>
 #include <dt-bindings/reset/tegra186-reset.h>
 
 / {
 	compatible = "nvidia,tegra186";
+	interrupt-parent = <&gic>;
 	#address-cells = <2>;
 	#size-cells = <2>;
 
@@ -58,6 +60,19 @@
 		status = "disabled";
 	};
 
+	gic: interrupt-controller@3881000 {
+		compatible = "arm,gic-400";
+		#interrupt-cells = <3>;
+		interrupt-controller;
+		reg = <0x0 0x3881000 0x0 0x1000>,
+		      <0x0 0x3882000 0x0 0x2000>,
+		      <0x0 0x3884000 0x0 0x2000>,
+		      <0x0 0x3886000 0x0 0x2000>;
+		interrupts = <GIC_PPI 9
+			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+		interrupt-parent = <&gic>;
+	};
+
 	hsp: hsp@3c00000 {
 		compatible = "nvidia,tegra186-hsp";
 		reg = <0x0 0x03c00000 0x0 0xa0000>;
@@ -80,6 +95,83 @@
 		#interrupt-cells = <2>;
 	};
 
+	pcie-controller@10003000 {
+		compatible = "nvidia,tegra186-pcie";
+		device_type = "pci";
+		reg = <0x0 0x10003000 0x0 0x00000800   /* PADS registers */
+		       0x0 0x10003800 0x0 0x00000800   /* AFI registers */
+		       0x0 0x40000000 0x0 0x10000000>; /* configuration space */
+		reg-names = "pads", "afi", "cs";
+		interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>, /* controller interrupt */
+			     <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>, /* MSI interrupt */
+			     <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>; /* Wake interrupt */
+		interrupt-names = "intr", "msi", "wake";
+
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0 0 0 0>;
+		interrupt-map = <0 0 0 0 &gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+
+		bus-range = <0x00 0xff>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+
+		ranges = <0x82000000 0 0x10000000 0x0 0x10000000 0 0x00001000   /* port 0 configuration space */
+			  0x82000000 0 0x10001000 0x0 0x10001000 0 0x00001000   /* port 1 configuration space */
+			  0x82000000 0 0x10004000 0x0 0x10004000 0 0x00001000   /* port 2 configuration space */
+			  0x81000000 0 0x0        0x0 0x50000000 0 0x00010000   /* downstream I/O (64 KiB) */
+			  0x82000000 0 0x50100000 0x0 0x50100000 0 0x07f00000   /* non-prefetchable memory (127 MiB) */
+			  0xc2000000 0 0x58000000 0x0 0x58000000 0 0x28000000>; /* prefetchable memory (640 MiB) */
+
+		clocks = <&bpmp TEGRA186_CLK_PCIE>,
+			 <&bpmp TEGRA186_CLK_AFI>;
+		clock-names = "pex", "afi";
+		resets = <&bpmp TEGRA186_RESET_PCIE>,
+			 <&bpmp TEGRA186_RESET_AFI>,
+			 <&bpmp TEGRA186_RESET_PCIEXCLK>;
+		reset-names = "pex", "afi", "pcie_x";
+		power-domains = <&bpmp TEGRA186_POWER_DOMAIN_PCX>;
+		status = "disabled";
+
+		pci@1,0 {
+			device_type = "pci";
+			assigned-addresses = <0x82000800 0 0x10000000 0 0x1000>;
+			reg = <0x000800 0 0 0 0>;
+			status = "disabled";
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges;
+
+			nvidia,num-lanes = <2>;
+		};
+
+		pci@2,0 {
+			device_type = "pci";
+			assigned-addresses = <0x82001000 0 0x10001000 0 0x1000>;
+			reg = <0x001000 0 0 0 0>;
+			status = "disabled";
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges;
+
+			nvidia,num-lanes = <1>;
+		};
+
+		pci@3,0 {
+			device_type = "pci";
+			assigned-addresses = <0x82001800 0 0x10004000 0 0x1000>;
+			reg = <0x001800 0 0 0 0>;
+			status = "disabled";
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges;
+
+			nvidia,num-lanes = <1>;
+		};
+	};
+
 	sysram@30000000 {
 		compatible = "nvidia,tegra186-sysram", "mmio-sram";
 		reg = <0x0 0x30000000 0x0 0x50000>;
-- 
2.39.5